diff --git a/jstests/libs/query/analyze_plan.js b/jstests/libs/query/analyze_plan.js
index 99dcd774754..2dab3e700c4 100644
--- a/jstests/libs/query/analyze_plan.js
+++ b/jstests/libs/query/analyze_plan.js
@@ -171,7 +171,7 @@ function isPlainObject(value) {
     return value && typeof value == "object" && value.constructor === Object;
 }
 
-const kExplainChildFieldNames = [
+export const kExplainChildFieldNames = [
     "inputStage",
     "inputStages",
     "thenStage",
diff --git a/jstests/query_golden/expected_output/featureFlagSbeFull/basic_joins.md b/jstests/query_golden/expected_output/featureFlagSbeFull/basic_joins.md
index cc45dfd3b0c..e6f83f5098c 100644
--- a/jstests/query_golden/expected_output/featureFlagSbeFull/basic_joins.md
+++ b/jstests/query_golden/expected_output/featureFlagSbeFull/basic_joins.md
@@ -73,856 +73,218 @@ Execution Engine: sbe
 ```
 
 ### With bottom-up plan enumeration (left-deep)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "2312073BEBB7A5E1754E2D03D9CB40B75C126DBF60867D4639E7E281C9E3DFAC",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "y",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (right-deep)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "2312073BEBB7A5E1754E2D03D9CB40B75C126DBF60867D4639E7E281C9E3DFAC",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			},
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "y",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "none",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "y"
+rightEmbeddingField: "none"
+  |  |
+  |  HASH_JOIN_EMBEDDING [a = a]
+  |  leftEmbeddingField: "none"
+  |  rightEmbeddingField: "x"
+  |  |  |
+  |  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  |  direction: "forward"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (zig-zag)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "2312073BEBB7A5E1754E2D03D9CB40B75C126DBF60867D4639E7E281C9E3DFAC",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "y",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ### With random order, seed 44, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "2312073BEBB7A5E1754E2D03D9CB40B75C126DBF60867D4639E7E281C9E3DFAC",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "x",
-				"rightEmbeddingField" : "none",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "y",
-		"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+NESTED_LOOP_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "x"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign1]
+  direction: "forward"
+```
 ### With random order, seed 44, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "2312073BEBB7A5E1754E2D03D9CB40B75C126DBF60867D4639E7E281C9E3DFAC",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "x",
-				"rightEmbeddingField" : "none",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "y",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
-### With random order, seed 420, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "2312073BEBB7A5E1754E2D03D9CB40B75C126DBF60867D4639E7E281C9E3DFAC",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"b = b"
-				],
-				"leftEmbeddingField" : "y",
-				"rightEmbeddingField" : "none",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign1",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"a = a"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "x",
-		"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "x"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign1]
+  direction: "forward"
 ```
+### With random order, seed 45, nested loop joins
 usedJoinOptimization: true
 
-### With random order, seed 420, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "2312073BEBB7A5E1754E2D03D9CB40B75C126DBF60867D4639E7E281C9E3DFAC",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"b = b"
-				],
-				"leftEmbeddingField" : "y",
-				"rightEmbeddingField" : "none",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign1",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"a = a"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "x",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
+HASH_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  direction: "forward"
 ```
+### With random order, seed 45, hash join enabled
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  direction: "forward"
+```
 ### With fixed order, index join
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "2312073BEBB7A5E1754E2D03D9CB40B75C126DBF60867D4639E7E281C9E3DFAC",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"b = b"
-				],
-				"leftEmbeddingField" : "y",
-				"rightEmbeddingField" : "none",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"inputStage" : {
-					"indexName" : "a_1",
-					"isMultiKey" : false,
-					"isPartial" : false,
-					"isSparse" : false,
-					"isUnique" : false,
-					"keyPattern" : {
-						"a" : 1
-					},
-					"nss" : "test.basic_joins_md_foreign1",
-					"stage" : "INDEX_PROBE_NODE"
-				},
-				"nss" : "test.basic_joins_md_foreign1",
-				"stage" : "FETCH"
-			}
-		],
-		"joinPredicates" : [
-			"a = a"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 6,
-		"rightEmbeddingField" : "x",
-		"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+INDEXED_NESTED_LOOP_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign1]
+  |  
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign1]
+  |  keyPattern: {  "a" : 1 }
+  |  indexName: "a_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration and indexes
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "2312073BEBB7A5E1754E2D03D9CB40B75C126DBF60867D4639E7E281C9E3DFAC",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"inputStage" : {
-							"indexName" : "a_1",
-							"isMultiKey" : false,
-							"isPartial" : false,
-							"isSparse" : false,
-							"isUnique" : false,
-							"keyPattern" : {
-								"a" : 1
-							},
-							"nss" : "test.basic_joins_md_foreign1",
-							"stage" : "INDEX_PROBE_NODE"
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "FETCH"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"inputStage" : {
-					"indexName" : "b_1",
-					"isMultiKey" : false,
-					"isPartial" : false,
-					"isSparse" : false,
-					"isUnique" : false,
-					"keyPattern" : {
-						"b" : 1
-					},
-					"nss" : "test.basic_joins_md_foreign2",
-					"stage" : "INDEX_PROBE_NODE"
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "FETCH"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "y",
-		"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
-```
+usedJoinOptimization: true
 
+```
+INDEXED_NESTED_LOOP_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign2]
+  |  
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign2]
+  |  keyPattern: {  "b" : 1 }
+  |  indexName: "b_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  INDEXED_NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign1]
+  |  
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign1]
+  |  keyPattern: {  "a" : 1 }
+  |  indexName: "a_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ## 2. Basic example with two joins and suffix
 ### No join opt
 ### Pipeline
@@ -1015,1126 +377,245 @@ Execution Engine: sbe
 ```
 
 ### With bottom-up plan enumeration (left-deep)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$y.b"
-	}
-]
-```
-### Results
-```json
-{  "_id" : "bar",  "count" : 6 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "8E0DF14D3DA69D8B1CF0361E869369F9C5E5F2F2A5D81998E6800BDA4F997B57",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								},
-								{
-									"direction" : "forward",
-									"filter" : {
-										
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "COLLSCAN"
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "none",
-							"rightEmbeddingField" : "x",
-							"stage" : "HASH_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "y",
-					"stage" : "HASH_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$y.b",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  PROJECTION_SIMPLE
+  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (right-deep)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$y.b"
-	}
-]
-```
-### Results
-```json
-{  "_id" : "bar",  "count" : 6 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "8E0DF14D3DA69D8B1CF0361E869369F9C5E5F2F2A5D81998E6800BDA4F997B57",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"direction" : "forward",
-							"filter" : {
-								
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "COLLSCAN"
-						},
-						{
-							"inputStages" : [
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								},
-								{
-									"direction" : "forward",
-									"filter" : {
-										
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "COLLSCAN"
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "none",
-							"rightEmbeddingField" : "x",
-							"stage" : "HASH_JOIN_EMBEDDING"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "y",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "none",
-					"stage" : "HASH_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$y.b",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "y"
+rightEmbeddingField: "none"
+  |  |
+  |  HASH_JOIN_EMBEDDING [a = a]
+  |  leftEmbeddingField: "none"
+  |  rightEmbeddingField: "x"
+  |  |  |
+  |  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  |  direction: "forward"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (zig-zag)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$y.b"
-	}
-]
-```
-### Results
-```json
-{  "_id" : "bar",  "count" : 6 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "8E0DF14D3DA69D8B1CF0361E869369F9C5E5F2F2A5D81998E6800BDA4F997B57",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								},
-								{
-									"direction" : "forward",
-									"filter" : {
-										
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "COLLSCAN"
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "none",
-							"rightEmbeddingField" : "x",
-							"stage" : "HASH_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "y",
-					"stage" : "HASH_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$y.b",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  PROJECTION_SIMPLE
+  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ### With random order, seed 44, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$y.b"
-	}
-]
-```
-### Results
-```json
-{  "_id" : "bar",  "count" : 6 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "8E0DF14D3DA69D8B1CF0361E869369F9C5E5F2F2A5D81998E6800BDA4F997B57",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"direction" : "forward",
-									"filter" : {
-										
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "COLLSCAN"
-								},
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "x",
-							"rightEmbeddingField" : "none",
-							"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "y",
-					"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$y.b",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
+```
+NESTED_LOOP_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "x"
+  rightEmbeddingField: "none"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign1]
+  direction: "forward"
+```
 ### With random order, seed 44, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$y.b"
-	}
-]
-```
-### Results
-```json
-{  "_id" : "bar",  "count" : 6 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "8E0DF14D3DA69D8B1CF0361E869369F9C5E5F2F2A5D81998E6800BDA4F997B57",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"direction" : "forward",
-									"filter" : {
-										
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "COLLSCAN"
-								},
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "x",
-							"rightEmbeddingField" : "none",
-							"stage" : "HASH_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "y",
-					"stage" : "HASH_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$y.b",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
-### With random order, seed 420, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$y.b"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : "bar",  "count" : 6 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "8E0DF14D3DA69D8B1CF0361E869369F9C5E5F2F2A5D81998E6800BDA4F997B57",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"direction" : "forward",
-									"filter" : {
-										
-									},
-									"nss" : "test.basic_joins_md_foreign2",
-									"stage" : "COLLSCAN"
-								},
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								}
-							],
-							"joinPredicates" : [
-								"b = b"
-							],
-							"leftEmbeddingField" : "y",
-							"rightEmbeddingField" : "none",
-							"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								
-							},
-							"nss" : "test.basic_joins_md_foreign1",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"a = a"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "x",
-					"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$y.b",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "x"
+  rightEmbeddingField: "none"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign1]
+  direction: "forward"
 ```
+### With random order, seed 45, nested loop joins
 usedJoinOptimization: true
 
-### With random order, seed 420, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$y.b"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : "bar",  "count" : 6 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "8E0DF14D3DA69D8B1CF0361E869369F9C5E5F2F2A5D81998E6800BDA4F997B57",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"direction" : "forward",
-									"filter" : {
-										
-									},
-									"nss" : "test.basic_joins_md_foreign2",
-									"stage" : "COLLSCAN"
-								},
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								}
-							],
-							"joinPredicates" : [
-								"b = b"
-							],
-							"leftEmbeddingField" : "y",
-							"rightEmbeddingField" : "none",
-							"stage" : "HASH_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								
-							},
-							"nss" : "test.basic_joins_md_foreign1",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"a = a"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "x",
-					"stage" : "HASH_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$y.b",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
+HASH_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  direction: "forward"
 ```
+### With random order, seed 45, hash join enabled
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  direction: "forward"
+```
 ### With fixed order, index join
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$y.b"
-	}
-]
-```
-### Results
-```json
-{  "_id" : "bar",  "count" : 6 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "8E0DF14D3DA69D8B1CF0361E869369F9C5E5F2F2A5D81998E6800BDA4F997B57",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"direction" : "forward",
-									"filter" : {
-										
-									},
-									"nss" : "test.basic_joins_md_foreign2",
-									"stage" : "COLLSCAN"
-								},
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								}
-							],
-							"joinPredicates" : [
-								"b = b"
-							],
-							"leftEmbeddingField" : "y",
-							"rightEmbeddingField" : "none",
-							"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-						},
-						{
-							"inputStage" : {
-								"indexName" : "a_1",
-								"isMultiKey" : false,
-								"isPartial" : false,
-								"isSparse" : false,
-								"isUnique" : false,
-								"keyPattern" : {
-									"a" : 1
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "INDEX_PROBE_NODE"
-							},
-							"nss" : "test.basic_joins_md_foreign1",
-							"stage" : "FETCH"
-						}
-					],
-					"joinPredicates" : [
-						"a = a"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 7,
-					"rightEmbeddingField" : "x",
-					"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$y.b",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
+```
+INDEXED_NESTED_LOOP_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign1]
+  |  
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign1]
+  |  keyPattern: {  "a" : 1 }
+  |  indexName: "a_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration and indexes
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$y.b"
-	}
-]
-```
-### Results
-```json
-{  "_id" : "bar",  "count" : 6 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "8E0DF14D3DA69D8B1CF0361E869369F9C5E5F2F2A5D81998E6800BDA4F997B57",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								},
-								{
-									"inputStage" : {
-										"indexName" : "a_1",
-										"isMultiKey" : false,
-										"isPartial" : false,
-										"isSparse" : false,
-										"isUnique" : false,
-										"keyPattern" : {
-											"a" : 1
-										},
-										"nss" : "test.basic_joins_md_foreign1",
-										"stage" : "INDEX_PROBE_NODE"
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "FETCH"
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "none",
-							"rightEmbeddingField" : "x",
-							"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-						},
-						{
-							"inputStage" : {
-								"indexName" : "b_1",
-								"isMultiKey" : false,
-								"isPartial" : false,
-								"isSparse" : false,
-								"isUnique" : false,
-								"keyPattern" : {
-									"b" : 1
-								},
-								"nss" : "test.basic_joins_md_foreign2",
-								"stage" : "INDEX_PROBE_NODE"
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "FETCH"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 8,
-					"rightEmbeddingField" : "y",
-					"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$y.b",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
+usedJoinOptimization: true
 
+```
+INDEXED_NESTED_LOOP_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign2]
+  |  
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign2]
+  |  keyPattern: {  "b" : 1 }
+  |  indexName: "b_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  INDEXED_NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign1]
+  |  
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign1]
+  |  keyPattern: {  "a" : 1 }
+  |  indexName: "a_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  PROJECTION_SIMPLE
+  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ## 3. Basic example with referencing field from previous lookup
 ### No join opt
 ### Pipeline
@@ -2208,822 +689,202 @@ Execution Engine: sbe
 ```
 
 ### With bottom-up plan enumeration (left-deep)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 0,  "a" : 1,  "b" : "foo",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DC5CAF413E9B6B8B5E8B2D3FB91E4D546524BF2707BBE30472D5CA8E12F6637E",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign3",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"x.c = c"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "z",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [x.c = c]
+leftEmbeddingField: "none"
+rightEmbeddingField: "z"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (right-deep)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 0,  "a" : 1,  "b" : "foo",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DC5CAF413E9B6B8B5E8B2D3FB91E4D546524BF2707BBE30472D5CA8E12F6637E",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign3",
-				"stage" : "COLLSCAN"
-			},
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			}
-		],
-		"joinPredicates" : [
-			"c = x.c"
-		],
-		"leftEmbeddingField" : "z",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "none",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [c = x.c]
+leftEmbeddingField: "z"
+rightEmbeddingField: "none"
+  |  |
+  |  HASH_JOIN_EMBEDDING [a = a]
+  |  leftEmbeddingField: "none"
+  |  rightEmbeddingField: "x"
+  |  |  |
+  |  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  |  direction: "forward"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign3]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (zig-zag)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 0,  "a" : 1,  "b" : "foo",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DC5CAF413E9B6B8B5E8B2D3FB91E4D546524BF2707BBE30472D5CA8E12F6637E",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign3",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"x.c = c"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "z",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [x.c = c]
+leftEmbeddingField: "none"
+rightEmbeddingField: "z"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ### With random order, seed 44, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 0,  "a" : 1,  "b" : "foo",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DC5CAF413E9B6B8B5E8B2D3FB91E4D546524BF2707BBE30472D5CA8E12F6637E",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "x",
-				"rightEmbeddingField" : "none",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign3",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"x.c = c"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "z",
-		"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+NESTED_LOOP_JOIN_EMBEDDING [x.c = c]
+leftEmbeddingField: "none"
+rightEmbeddingField: "z"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "x"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign1]
+  direction: "forward"
+```
 ### With random order, seed 44, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 0,  "a" : 1,  "b" : "foo",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DC5CAF413E9B6B8B5E8B2D3FB91E4D546524BF2707BBE30472D5CA8E12F6637E",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "x",
-				"rightEmbeddingField" : "none",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign3",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"x.c = c"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "z",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
-### With random order, seed 420, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 0,  "a" : 1,  "b" : "foo",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DC5CAF413E9B6B8B5E8B2D3FB91E4D546524BF2707BBE30472D5CA8E12F6637E",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign3",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"c = c"
-				],
-				"leftEmbeddingField" : "z",
-				"rightEmbeddingField" : "x",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"x.a = a"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "none",
-		"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
+HASH_JOIN_EMBEDDING [x.c = c]
+leftEmbeddingField: "none"
+rightEmbeddingField: "z"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "x"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign1]
+  direction: "forward"
 ```
+### With random order, seed 45, nested loop joins
 usedJoinOptimization: true
 
-### With random order, seed 420, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 0,  "a" : 1,  "b" : "foo",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DC5CAF413E9B6B8B5E8B2D3FB91E4D546524BF2707BBE30472D5CA8E12F6637E",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign3",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"c = c"
-				],
-				"leftEmbeddingField" : "z",
-				"rightEmbeddingField" : "x",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"x.a = a"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "none",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
+HASH_JOIN_EMBEDDING [x.a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [c = c]
+  leftEmbeddingField: "z"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign3]
+  direction: "forward"
 ```
+### With random order, seed 45, hash join enabled
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [x.a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [c = c]
+  leftEmbeddingField: "z"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign3]
+  direction: "forward"
+```
 ### With fixed order, index join
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 0,  "a" : 1,  "b" : "foo",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DC5CAF413E9B6B8B5E8B2D3FB91E4D546524BF2707BBE30472D5CA8E12F6637E",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign3",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"c = c"
-				],
-				"leftEmbeddingField" : "z",
-				"rightEmbeddingField" : "x",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"x.a = a"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "none",
-		"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+NESTED_LOOP_JOIN_EMBEDDING [x.a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [c = c]
+  leftEmbeddingField: "z"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign3]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration and indexes
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 0,  "a" : 1,  "b" : "foo",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DC5CAF413E9B6B8B5E8B2D3FB91E4D546524BF2707BBE30472D5CA8E12F6637E",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"inputStage" : {
-							"indexName" : "a_1",
-							"isMultiKey" : false,
-							"isPartial" : false,
-							"isSparse" : false,
-							"isUnique" : false,
-							"keyPattern" : {
-								"a" : 1
-							},
-							"nss" : "test.basic_joins_md_foreign1",
-							"stage" : "INDEX_PROBE_NODE"
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "FETCH"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign3",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"x.c = c"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 6,
-		"rightEmbeddingField" : "z",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
+usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [x.c = c]
+leftEmbeddingField: "none"
+rightEmbeddingField: "z"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  INDEXED_NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign1]
+  |  
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign1]
+  |  keyPattern: {  "a" : 1 }
+  |  indexName: "a_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ## 4. Basic example with 3 joins & subsequent join referencing fields from previous lookups
 ### No join opt
 ### Pipeline
@@ -3119,1117 +980,281 @@ Execution Engine: sbe
 ```
 
 ### With bottom-up plan enumeration (left-deep)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DD24FFAE1F16C6C1F5B03939E0C642A797120A2585058C72554C9649BEA427AB",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"a = a"
-						],
-						"leftEmbeddingField" : "none",
-						"rightEmbeddingField" : "x",
-						"stage" : "HASH_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"b = b"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "y",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign3",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"x.c = c"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "z",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [x.c = c]
+leftEmbeddingField: "none"
+rightEmbeddingField: "z"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (right-deep)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DD24FFAE1F16C6C1F5B03939E0C642A797120A2585058C72554C9649BEA427AB",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign3",
-				"stage" : "COLLSCAN"
-			},
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"a = a"
-						],
-						"leftEmbeddingField" : "none",
-						"rightEmbeddingField" : "x",
-						"stage" : "HASH_JOIN_EMBEDDING"
-					}
-				],
-				"joinPredicates" : [
-					"b = b"
-				],
-				"leftEmbeddingField" : "y",
-				"rightEmbeddingField" : "none",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			}
-		],
-		"joinPredicates" : [
-			"c = x.c"
-		],
-		"leftEmbeddingField" : "z",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "none",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [c = x.c]
+leftEmbeddingField: "z"
+rightEmbeddingField: "none"
+  |  |
+  |  HASH_JOIN_EMBEDDING [b = b]
+  |  leftEmbeddingField: "y"
+  |  rightEmbeddingField: "none"
+  |  |  |
+  |  |  HASH_JOIN_EMBEDDING [a = a]
+  |  |  leftEmbeddingField: "none"
+  |  |  rightEmbeddingField: "x"
+  |  |  |  |
+  |  |  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  |  |  direction: "forward"
+  |  |  |
+  |  |  COLLSCAN [test.basic_joins_md]
+  |  |  direction: "forward"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign3]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (zig-zag)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DD24FFAE1F16C6C1F5B03939E0C642A797120A2585058C72554C9649BEA427AB",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign3",
-				"stage" : "COLLSCAN"
-			},
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"a = a"
-						],
-						"leftEmbeddingField" : "none",
-						"rightEmbeddingField" : "x",
-						"stage" : "HASH_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"b = b"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "y",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			}
-		],
-		"joinPredicates" : [
-			"c = x.c"
-		],
-		"leftEmbeddingField" : "z",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "none",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [c = x.c]
+leftEmbeddingField: "z"
+rightEmbeddingField: "none"
+  |  |
+  |  HASH_JOIN_EMBEDDING [b = b]
+  |  leftEmbeddingField: "none"
+  |  rightEmbeddingField: "y"
+  |  |  |
+  |  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  |  direction: "forward"
+  |  |
+  |  HASH_JOIN_EMBEDDING [a = a]
+  |  leftEmbeddingField: "none"
+  |  rightEmbeddingField: "x"
+  |  |  |
+  |  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  |  direction: "forward"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign3]
+  direction: "forward"
+```
 ### With random order, seed 44, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DD24FFAE1F16C6C1F5B03939E0C642A797120A2585058C72554C9649BEA427AB",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"a = a"
-						],
-						"leftEmbeddingField" : "none",
-						"rightEmbeddingField" : "x",
-						"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign3",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"x.c = c"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "z",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "y",
-		"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+NESTED_LOOP_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [x.c = c]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "z"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ### With random order, seed 44, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DD24FFAE1F16C6C1F5B03939E0C642A797120A2585058C72554C9649BEA427AB",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"a = a"
-						],
-						"leftEmbeddingField" : "none",
-						"rightEmbeddingField" : "x",
-						"stage" : "HASH_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign3",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"x.c = c"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "z",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "y",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
-### With random order, seed 420, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DD24FFAE1F16C6C1F5B03939E0C642A797120A2585058C72554C9649BEA427AB",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign3",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"c = c"
-						],
-						"leftEmbeddingField" : "x",
-						"rightEmbeddingField" : "z",
-						"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"x.a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "none",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "y",
-		"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [x.c = c]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "z"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
 ```
+### With random order, seed 45, nested loop joins
 usedJoinOptimization: true
 
-### With random order, seed 420, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DD24FFAE1F16C6C1F5B03939E0C642A797120A2585058C72554C9649BEA427AB",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign3",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"c = c"
-						],
-						"leftEmbeddingField" : "x",
-						"rightEmbeddingField" : "z",
-						"stage" : "HASH_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"x.a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "none",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "y",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [x.a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [c = c]
+  leftEmbeddingField: "z"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign3]
+  direction: "forward"
 ```
+### With random order, seed 45, hash join enabled
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [x.a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [c = c]
+  leftEmbeddingField: "z"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign3]
+  direction: "forward"
+```
 ### With fixed order, index join
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DD24FFAE1F16C6C1F5B03939E0C642A797120A2585058C72554C9649BEA427AB",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign3",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"c = c"
-						],
-						"leftEmbeddingField" : "x",
-						"rightEmbeddingField" : "z",
-						"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"x.a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "none",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"inputStage" : {
-					"indexName" : "b_1",
-					"isMultiKey" : false,
-					"isPartial" : false,
-					"isSparse" : false,
-					"isUnique" : false,
-					"keyPattern" : {
-						"b" : 1
-					},
-					"nss" : "test.basic_joins_md_foreign2",
-					"stage" : "INDEX_PROBE_NODE"
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "FETCH"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 8,
-		"rightEmbeddingField" : "y",
-		"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+INDEXED_NESTED_LOOP_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign2]
+  |  
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign2]
+  |  keyPattern: {  "b" : 1 }
+  |  indexName: "b_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [x.a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [c = c]
+  leftEmbeddingField: "z"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign3]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration and indexes
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DD24FFAE1F16C6C1F5B03939E0C642A797120A2585058C72554C9649BEA427AB",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"inputStage" : {
-									"indexName" : "a_1",
-									"isMultiKey" : false,
-									"isPartial" : false,
-									"isSparse" : false,
-									"isUnique" : false,
-									"keyPattern" : {
-										"a" : 1
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "INDEX_PROBE_NODE"
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "FETCH"
-							}
-						],
-						"joinPredicates" : [
-							"a = a"
-						],
-						"leftEmbeddingField" : "none",
-						"rightEmbeddingField" : "x",
-						"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-					},
-					{
-						"inputStage" : {
-							"indexName" : "b_1",
-							"isMultiKey" : false,
-							"isPartial" : false,
-							"isSparse" : false,
-							"isUnique" : false,
-							"keyPattern" : {
-								"b" : 1
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "INDEX_PROBE_NODE"
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "FETCH"
-					}
-				],
-				"joinPredicates" : [
-					"b = b"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "y",
-				"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign3",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"x.c = c"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 9,
-		"rightEmbeddingField" : "z",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
+usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [x.c = c]
+leftEmbeddingField: "none"
+rightEmbeddingField: "z"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  INDEXED_NESTED_LOOP_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "y"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign2]
+  |  
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign2]
+  |  keyPattern: {  "b" : 1 }
+  |  indexName: "b_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  INDEXED_NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign1]
+  |  
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign1]
+  |  keyPattern: {  "a" : 1 }
+  |  indexName: "a_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ## 5. Basic example with 3 joins & subsequent join referencing nested paths
 ### No join opt
 ### Pipeline
@@ -4320,1053 +1345,262 @@ Execution Engine: sbe
 ```
 
 ### With bottom-up plan enumeration (left-deep)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "w.y",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$w.y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "k.y.z",
-			"localField" : "w.y.d",
-			"foreignField" : "d"
-		}
-	},
-	{
-		"$unwind" : "$k.y.z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "k" : {  "y" : {  "z" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } } },  "w" : {  "y" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } },  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "9226A4FAA10C8790B27D9B5B865D46D0C58179A837F014E6289A34A6EBE76420",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"a = a"
-						],
-						"leftEmbeddingField" : "none",
-						"rightEmbeddingField" : "x",
-						"stage" : "HASH_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign3",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"x.c = c"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "w.y",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"w.y.d = d"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "k.y.z",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [w.y.d = d]
+leftEmbeddingField: "none"
+rightEmbeddingField: "k.y.z"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [x.c = c]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "w.y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (right-deep)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "w.y",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$w.y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "k.y.z",
-			"localField" : "w.y.d",
-			"foreignField" : "d"
-		}
-	},
-	{
-		"$unwind" : "$k.y.z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "k" : {  "y" : {  "z" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } } },  "w" : {  "y" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } },  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "9226A4FAA10C8790B27D9B5B865D46D0C58179A837F014E6289A34A6EBE76420",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			},
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign3",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"a = a"
-						],
-						"leftEmbeddingField" : "none",
-						"rightEmbeddingField" : "x",
-						"stage" : "HASH_JOIN_EMBEDDING"
-					}
-				],
-				"joinPredicates" : [
-					"c = x.c"
-				],
-				"leftEmbeddingField" : "w.y",
-				"rightEmbeddingField" : "none",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			}
-		],
-		"joinPredicates" : [
-			"d = w.y.d"
-		],
-		"leftEmbeddingField" : "k.y.z",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "none",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [d = w.y.d]
+leftEmbeddingField: "k.y.z"
+rightEmbeddingField: "none"
+  |  |
+  |  HASH_JOIN_EMBEDDING [c = x.c]
+  |  leftEmbeddingField: "w.y"
+  |  rightEmbeddingField: "none"
+  |  |  |
+  |  |  HASH_JOIN_EMBEDDING [a = a]
+  |  |  leftEmbeddingField: "none"
+  |  |  rightEmbeddingField: "x"
+  |  |  |  |
+  |  |  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  |  |  direction: "forward"
+  |  |  |
+  |  |  COLLSCAN [test.basic_joins_md]
+  |  |  direction: "forward"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (zig-zag)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "w.y",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$w.y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "k.y.z",
-			"localField" : "w.y.d",
-			"foreignField" : "d"
-		}
-	},
-	{
-		"$unwind" : "$k.y.z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "k" : {  "y" : {  "z" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } } },  "w" : {  "y" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } },  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "9226A4FAA10C8790B27D9B5B865D46D0C58179A837F014E6289A34A6EBE76420",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			},
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"a = a"
-						],
-						"leftEmbeddingField" : "none",
-						"rightEmbeddingField" : "x",
-						"stage" : "HASH_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign3",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"x.c = c"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "w.y",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			}
-		],
-		"joinPredicates" : [
-			"d = w.y.d"
-		],
-		"leftEmbeddingField" : "k.y.z",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "none",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [d = w.y.d]
+leftEmbeddingField: "k.y.z"
+rightEmbeddingField: "none"
+  |  |
+  |  HASH_JOIN_EMBEDDING [x.c = c]
+  |  leftEmbeddingField: "none"
+  |  rightEmbeddingField: "w.y"
+  |  |  |
+  |  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  |  direction: "forward"
+  |  |
+  |  HASH_JOIN_EMBEDDING [a = a]
+  |  leftEmbeddingField: "none"
+  |  rightEmbeddingField: "x"
+  |  |  |
+  |  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  |  direction: "forward"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  direction: "forward"
+```
 ### With random order, seed 44, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "w.y",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$w.y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "k.y.z",
-			"localField" : "w.y.d",
-			"foreignField" : "d"
-		}
-	},
-	{
-		"$unwind" : "$k.y.z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "k" : {  "y" : {  "z" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } } },  "w" : {  "y" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } },  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "9226A4FAA10C8790B27D9B5B865D46D0C58179A837F014E6289A34A6EBE76420",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"a = a"
-						],
-						"leftEmbeddingField" : "none",
-						"rightEmbeddingField" : "x",
-						"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign3",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"x.c = c"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "w.y",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"w.y.d = d"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "k.y.z",
-		"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+NESTED_LOOP_JOIN_EMBEDDING [w.y.d = d]
+leftEmbeddingField: "none"
+rightEmbeddingField: "k.y.z"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [x.c = c]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "w.y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ### With random order, seed 44, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "w.y",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$w.y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "k.y.z",
-			"localField" : "w.y.d",
-			"foreignField" : "d"
-		}
-	},
-	{
-		"$unwind" : "$k.y.z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "k" : {  "y" : {  "z" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } } },  "w" : {  "y" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } },  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "9226A4FAA10C8790B27D9B5B865D46D0C58179A837F014E6289A34A6EBE76420",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"a = a"
-						],
-						"leftEmbeddingField" : "none",
-						"rightEmbeddingField" : "x",
-						"stage" : "HASH_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign3",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"x.c = c"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "w.y",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"w.y.d = d"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "k.y.z",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
-### With random order, seed 420, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "w.y",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$w.y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "k.y.z",
-			"localField" : "w.y.d",
-			"foreignField" : "d"
-		}
-	},
-	{
-		"$unwind" : "$k.y.z"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "k" : {  "y" : {  "z" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } } },  "w" : {  "y" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } },  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "9226A4FAA10C8790B27D9B5B865D46D0C58179A837F014E6289A34A6EBE76420",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign3",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"c = c"
-						],
-						"leftEmbeddingField" : "x",
-						"rightEmbeddingField" : "w.y",
-						"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"w.y.d = d"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "k.y.z",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"x.a = a"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "none",
-		"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
+HASH_JOIN_EMBEDDING [w.y.d = d]
+leftEmbeddingField: "none"
+rightEmbeddingField: "k.y.z"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [x.c = c]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "w.y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
 ```
+### With random order, seed 45, nested loop joins
 usedJoinOptimization: true
 
-### With random order, seed 420, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "w.y",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$w.y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "k.y.z",
-			"localField" : "w.y.d",
-			"foreignField" : "d"
-		}
-	},
-	{
-		"$unwind" : "$k.y.z"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "k" : {  "y" : {  "z" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } } },  "w" : {  "y" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } },  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "9226A4FAA10C8790B27D9B5B865D46D0C58179A837F014E6289A34A6EBE76420",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign3",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"c = c"
-						],
-						"leftEmbeddingField" : "x",
-						"rightEmbeddingField" : "w.y",
-						"stage" : "HASH_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"w.y.d = d"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "k.y.z",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"x.a = a"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "none",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
+HASH_JOIN_EMBEDDING [x.a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [w.y.c = c]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [d = d]
+  leftEmbeddingField: "k.y.z"
+  rightEmbeddingField: "w.y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  direction: "forward"
 ```
+### With random order, seed 45, hash join enabled
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [x.a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [w.y.c = c]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [d = d]
+  leftEmbeddingField: "k.y.z"
+  rightEmbeddingField: "w.y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  direction: "forward"
+```
 ### With fixed order, index join
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "w.y",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$w.y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "k.y.z",
-			"localField" : "w.y.d",
-			"foreignField" : "d"
-		}
-	},
-	{
-		"$unwind" : "$k.y.z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "k" : {  "y" : {  "z" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } } },  "w" : {  "y" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } },  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "9226A4FAA10C8790B27D9B5B865D46D0C58179A837F014E6289A34A6EBE76420",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign3",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"c = c"
-						],
-						"leftEmbeddingField" : "x",
-						"rightEmbeddingField" : "w.y",
-						"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"w.y.d = d"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "k.y.z",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"x.a = a"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "none",
-		"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+NESTED_LOOP_JOIN_EMBEDDING [x.a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [w.y.c = c]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [d = d]
+  leftEmbeddingField: "k.y.z"
+  rightEmbeddingField: "w.y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration and indexes
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "w.y",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$w.y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "k.y.z",
-			"localField" : "w.y.d",
-			"foreignField" : "d"
-		}
-	},
-	{
-		"$unwind" : "$k.y.z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "k" : {  "y" : {  "z" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } } },  "w" : {  "y" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } },  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "9226A4FAA10C8790B27D9B5B865D46D0C58179A837F014E6289A34A6EBE76420",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"inputStage" : {
-									"indexName" : "a_1",
-									"isMultiKey" : false,
-									"isPartial" : false,
-									"isSparse" : false,
-									"isUnique" : false,
-									"keyPattern" : {
-										"a" : 1
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "INDEX_PROBE_NODE"
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "FETCH"
-							}
-						],
-						"joinPredicates" : [
-							"a = a"
-						],
-						"leftEmbeddingField" : "none",
-						"rightEmbeddingField" : "x",
-						"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign3",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"x.c = c"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "w.y",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"w.y.d = d"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 8,
-		"rightEmbeddingField" : "k.y.z",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
+usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [w.y.d = d]
+leftEmbeddingField: "none"
+rightEmbeddingField: "k.y.z"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [x.c = c]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "w.y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  INDEXED_NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign1]
+  |  
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign1]
+  |  keyPattern: {  "a" : 1 }
+  |  indexName: "a_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
diff --git a/jstests/query_golden/expected_output/sbeDisabled/basic_joins.md b/jstests/query_golden/expected_output/sbeDisabled/basic_joins.md
index 2706aba3033..5d45005d75e 100644
--- a/jstests/query_golden/expected_output/sbeDisabled/basic_joins.md
+++ b/jstests/query_golden/expected_output/sbeDisabled/basic_joins.md
@@ -80,856 +80,218 @@ Execution Engine: classic
 ```
 
 ### With bottom-up plan enumeration (left-deep)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "2312073BEBB7A5E1754E2D03D9CB40B75C126DBF60867D4639E7E281C9E3DFAC",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "y",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (right-deep)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "2312073BEBB7A5E1754E2D03D9CB40B75C126DBF60867D4639E7E281C9E3DFAC",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			},
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "y",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "none",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "y"
+rightEmbeddingField: "none"
+  |  |
+  |  HASH_JOIN_EMBEDDING [a = a]
+  |  leftEmbeddingField: "none"
+  |  rightEmbeddingField: "x"
+  |  |  |
+  |  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  |  direction: "forward"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (zig-zag)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "2312073BEBB7A5E1754E2D03D9CB40B75C126DBF60867D4639E7E281C9E3DFAC",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "y",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ### With random order, seed 44, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "2312073BEBB7A5E1754E2D03D9CB40B75C126DBF60867D4639E7E281C9E3DFAC",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "x",
-				"rightEmbeddingField" : "none",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "y",
-		"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+NESTED_LOOP_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "x"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign1]
+  direction: "forward"
+```
 ### With random order, seed 44, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "2312073BEBB7A5E1754E2D03D9CB40B75C126DBF60867D4639E7E281C9E3DFAC",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "x",
-				"rightEmbeddingField" : "none",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "y",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
-### With random order, seed 420, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "2312073BEBB7A5E1754E2D03D9CB40B75C126DBF60867D4639E7E281C9E3DFAC",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"b = b"
-				],
-				"leftEmbeddingField" : "y",
-				"rightEmbeddingField" : "none",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign1",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"a = a"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "x",
-		"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "x"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign1]
+  direction: "forward"
 ```
+### With random order, seed 45, nested loop joins
 usedJoinOptimization: true
 
-### With random order, seed 420, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "2312073BEBB7A5E1754E2D03D9CB40B75C126DBF60867D4639E7E281C9E3DFAC",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"b = b"
-				],
-				"leftEmbeddingField" : "y",
-				"rightEmbeddingField" : "none",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign1",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"a = a"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "x",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
+HASH_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  direction: "forward"
 ```
+### With random order, seed 45, hash join enabled
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  direction: "forward"
+```
 ### With fixed order, index join
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "2312073BEBB7A5E1754E2D03D9CB40B75C126DBF60867D4639E7E281C9E3DFAC",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"b = b"
-				],
-				"leftEmbeddingField" : "y",
-				"rightEmbeddingField" : "none",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"inputStage" : {
-					"indexName" : "a_1",
-					"isMultiKey" : false,
-					"isPartial" : false,
-					"isSparse" : false,
-					"isUnique" : false,
-					"keyPattern" : {
-						"a" : 1
-					},
-					"nss" : "test.basic_joins_md_foreign1",
-					"stage" : "INDEX_PROBE_NODE"
-				},
-				"nss" : "test.basic_joins_md_foreign1",
-				"stage" : "FETCH"
-			}
-		],
-		"joinPredicates" : [
-			"a = a"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 6,
-		"rightEmbeddingField" : "x",
-		"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+INDEXED_NESTED_LOOP_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign1]
+  |  
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign1]
+  |  keyPattern: {  "a" : 1 }
+  |  indexName: "a_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration and indexes
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "2312073BEBB7A5E1754E2D03D9CB40B75C126DBF60867D4639E7E281C9E3DFAC",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"inputStage" : {
-							"indexName" : "a_1",
-							"isMultiKey" : false,
-							"isPartial" : false,
-							"isSparse" : false,
-							"isUnique" : false,
-							"keyPattern" : {
-								"a" : 1
-							},
-							"nss" : "test.basic_joins_md_foreign1",
-							"stage" : "INDEX_PROBE_NODE"
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "FETCH"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"inputStage" : {
-					"indexName" : "b_1",
-					"isMultiKey" : false,
-					"isPartial" : false,
-					"isSparse" : false,
-					"isUnique" : false,
-					"keyPattern" : {
-						"b" : 1
-					},
-					"nss" : "test.basic_joins_md_foreign2",
-					"stage" : "INDEX_PROBE_NODE"
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "FETCH"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "y",
-		"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
-```
+usedJoinOptimization: true
 
+```
+INDEXED_NESTED_LOOP_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign2]
+  |  
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign2]
+  |  keyPattern: {  "b" : 1 }
+  |  indexName: "b_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  INDEXED_NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign1]
+  |  
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign1]
+  |  keyPattern: {  "a" : 1 }
+  |  indexName: "a_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ## 2. Basic example with two joins and suffix
 ### No join opt
 ### Pipeline
@@ -1036,1126 +398,245 @@ Execution Engine: classic
 ```
 
 ### With bottom-up plan enumeration (left-deep)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$y.b"
-	}
-]
-```
-### Results
-```json
-{  "_id" : "bar",  "count" : 6 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "8E0DF14D3DA69D8B1CF0361E869369F9C5E5F2F2A5D81998E6800BDA4F997B57",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								},
-								{
-									"direction" : "forward",
-									"filter" : {
-										
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "COLLSCAN"
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "none",
-							"rightEmbeddingField" : "x",
-							"stage" : "HASH_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "y",
-					"stage" : "HASH_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$y.b",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  PROJECTION_SIMPLE
+  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (right-deep)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$y.b"
-	}
-]
-```
-### Results
-```json
-{  "_id" : "bar",  "count" : 6 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "8E0DF14D3DA69D8B1CF0361E869369F9C5E5F2F2A5D81998E6800BDA4F997B57",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"direction" : "forward",
-							"filter" : {
-								
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "COLLSCAN"
-						},
-						{
-							"inputStages" : [
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								},
-								{
-									"direction" : "forward",
-									"filter" : {
-										
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "COLLSCAN"
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "none",
-							"rightEmbeddingField" : "x",
-							"stage" : "HASH_JOIN_EMBEDDING"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "y",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "none",
-					"stage" : "HASH_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$y.b",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "y"
+rightEmbeddingField: "none"
+  |  |
+  |  HASH_JOIN_EMBEDDING [a = a]
+  |  leftEmbeddingField: "none"
+  |  rightEmbeddingField: "x"
+  |  |  |
+  |  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  |  direction: "forward"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (zig-zag)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$y.b"
-	}
-]
-```
-### Results
-```json
-{  "_id" : "bar",  "count" : 6 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "8E0DF14D3DA69D8B1CF0361E869369F9C5E5F2F2A5D81998E6800BDA4F997B57",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								},
-								{
-									"direction" : "forward",
-									"filter" : {
-										
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "COLLSCAN"
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "none",
-							"rightEmbeddingField" : "x",
-							"stage" : "HASH_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "y",
-					"stage" : "HASH_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$y.b",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  PROJECTION_SIMPLE
+  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ### With random order, seed 44, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$y.b"
-	}
-]
-```
-### Results
-```json
-{  "_id" : "bar",  "count" : 6 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "8E0DF14D3DA69D8B1CF0361E869369F9C5E5F2F2A5D81998E6800BDA4F997B57",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"direction" : "forward",
-									"filter" : {
-										
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "COLLSCAN"
-								},
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "x",
-							"rightEmbeddingField" : "none",
-							"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "y",
-					"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$y.b",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
+```
+NESTED_LOOP_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "x"
+  rightEmbeddingField: "none"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign1]
+  direction: "forward"
+```
 ### With random order, seed 44, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$y.b"
-	}
-]
-```
-### Results
-```json
-{  "_id" : "bar",  "count" : 6 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "8E0DF14D3DA69D8B1CF0361E869369F9C5E5F2F2A5D81998E6800BDA4F997B57",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"direction" : "forward",
-									"filter" : {
-										
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "COLLSCAN"
-								},
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "x",
-							"rightEmbeddingField" : "none",
-							"stage" : "HASH_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "y",
-					"stage" : "HASH_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$y.b",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
-### With random order, seed 420, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$y.b"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : "bar",  "count" : 6 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "8E0DF14D3DA69D8B1CF0361E869369F9C5E5F2F2A5D81998E6800BDA4F997B57",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"direction" : "forward",
-									"filter" : {
-										
-									},
-									"nss" : "test.basic_joins_md_foreign2",
-									"stage" : "COLLSCAN"
-								},
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								}
-							],
-							"joinPredicates" : [
-								"b = b"
-							],
-							"leftEmbeddingField" : "y",
-							"rightEmbeddingField" : "none",
-							"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								
-							},
-							"nss" : "test.basic_joins_md_foreign1",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"a = a"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "x",
-					"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$y.b",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "x"
+  rightEmbeddingField: "none"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign1]
+  direction: "forward"
 ```
+### With random order, seed 45, nested loop joins
 usedJoinOptimization: true
 
-### With random order, seed 420, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$y.b"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : "bar",  "count" : 6 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "8E0DF14D3DA69D8B1CF0361E869369F9C5E5F2F2A5D81998E6800BDA4F997B57",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"direction" : "forward",
-									"filter" : {
-										
-									},
-									"nss" : "test.basic_joins_md_foreign2",
-									"stage" : "COLLSCAN"
-								},
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								}
-							],
-							"joinPredicates" : [
-								"b = b"
-							],
-							"leftEmbeddingField" : "y",
-							"rightEmbeddingField" : "none",
-							"stage" : "HASH_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								
-							},
-							"nss" : "test.basic_joins_md_foreign1",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"a = a"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "x",
-					"stage" : "HASH_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$y.b",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
+HASH_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  direction: "forward"
 ```
+### With random order, seed 45, hash join enabled
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  direction: "forward"
+```
 ### With fixed order, index join
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$y.b"
-	}
-]
-```
-### Results
-```json
-{  "_id" : "bar",  "count" : 6 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "8E0DF14D3DA69D8B1CF0361E869369F9C5E5F2F2A5D81998E6800BDA4F997B57",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"direction" : "forward",
-									"filter" : {
-										
-									},
-									"nss" : "test.basic_joins_md_foreign2",
-									"stage" : "COLLSCAN"
-								},
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								}
-							],
-							"joinPredicates" : [
-								"b = b"
-							],
-							"leftEmbeddingField" : "y",
-							"rightEmbeddingField" : "none",
-							"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-						},
-						{
-							"inputStage" : {
-								"indexName" : "a_1",
-								"isMultiKey" : false,
-								"isPartial" : false,
-								"isSparse" : false,
-								"isUnique" : false,
-								"keyPattern" : {
-									"a" : 1
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "INDEX_PROBE_NODE"
-							},
-							"nss" : "test.basic_joins_md_foreign1",
-							"stage" : "FETCH"
-						}
-					],
-					"joinPredicates" : [
-						"a = a"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 7,
-					"rightEmbeddingField" : "x",
-					"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$y.b",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
+```
+INDEXED_NESTED_LOOP_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign1]
+  |  
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign1]
+  |  keyPattern: {  "a" : 1 }
+  |  indexName: "a_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration and indexes
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$y.b"
-	}
-]
-```
-### Results
-```json
-{  "_id" : "bar",  "count" : 6 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "8E0DF14D3DA69D8B1CF0361E869369F9C5E5F2F2A5D81998E6800BDA4F997B57",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								},
-								{
-									"inputStage" : {
-										"indexName" : "a_1",
-										"isMultiKey" : false,
-										"isPartial" : false,
-										"isSparse" : false,
-										"isUnique" : false,
-										"keyPattern" : {
-											"a" : 1
-										},
-										"nss" : "test.basic_joins_md_foreign1",
-										"stage" : "INDEX_PROBE_NODE"
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "FETCH"
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "none",
-							"rightEmbeddingField" : "x",
-							"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-						},
-						{
-							"inputStage" : {
-								"indexName" : "b_1",
-								"isMultiKey" : false,
-								"isPartial" : false,
-								"isSparse" : false,
-								"isUnique" : false,
-								"keyPattern" : {
-									"b" : 1
-								},
-								"nss" : "test.basic_joins_md_foreign2",
-								"stage" : "INDEX_PROBE_NODE"
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "FETCH"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 8,
-					"rightEmbeddingField" : "y",
-					"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$y.b",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
+usedJoinOptimization: true
 
+```
+INDEXED_NESTED_LOOP_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign2]
+  |  
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign2]
+  |  keyPattern: {  "b" : 1 }
+  |  indexName: "b_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  INDEXED_NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign1]
+  |  
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign1]
+  |  keyPattern: {  "a" : 1 }
+  |  indexName: "a_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  PROJECTION_SIMPLE
+  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ## 3. Example with two joins, suffix, and sub-pipeline with un-correlated $match
 ### No join opt
 ### Pipeline
@@ -2305,1357 +786,270 @@ Execution Engine: classic
 ```
 
 ### With bottom-up plan enumeration (left-deep)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$x.a"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "count" : 2 }
-{  "_id" : 2,  "count" : 2 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "39062D46AC66A096B98DB7B9AD3C198F432183DF3436553F59C3EC8B5252F1EA",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								},
-								{
-									"direction" : "forward",
-									"filter" : {
-										"d" : {
-											"$lt" : 3
-										}
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "COLLSCAN"
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "none",
-							"rightEmbeddingField" : "x",
-							"stage" : "HASH_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								"b" : {
-									"$gt" : "aaa"
-								}
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "y",
-					"stage" : "HASH_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$x.a",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  direction: "forward"
+  |
+  PROJECTION_SIMPLE
+  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (right-deep)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$x.a"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "count" : 2 }
-{  "_id" : 2,  "count" : 2 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "39062D46AC66A096B98DB7B9AD3C198F432183DF3436553F59C3EC8B5252F1EA",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"direction" : "forward",
-							"filter" : {
-								"b" : {
-									"$gt" : "aaa"
-								}
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "COLLSCAN"
-						},
-						{
-							"inputStages" : [
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								},
-								{
-									"direction" : "forward",
-									"filter" : {
-										"d" : {
-											"$lt" : 3
-										}
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "COLLSCAN"
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "none",
-							"rightEmbeddingField" : "x",
-							"stage" : "HASH_JOIN_EMBEDDING"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "y",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "none",
-					"stage" : "HASH_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$x.a",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "y"
+rightEmbeddingField: "none"
+  |  |
+  |  HASH_JOIN_EMBEDDING [a = a]
+  |  leftEmbeddingField: "none"
+  |  rightEmbeddingField: "x"
+  |  |  |
+  |  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  |  direction: "forward"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  filter: {  "b" : {  "$gt" : "aaa" } }
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (zig-zag)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$x.a"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "count" : 2 }
-{  "_id" : 2,  "count" : 2 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "39062D46AC66A096B98DB7B9AD3C198F432183DF3436553F59C3EC8B5252F1EA",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								},
-								{
-									"direction" : "forward",
-									"filter" : {
-										"d" : {
-											"$lt" : 3
-										}
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "COLLSCAN"
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "none",
-							"rightEmbeddingField" : "x",
-							"stage" : "HASH_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								"b" : {
-									"$gt" : "aaa"
-								}
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "y",
-					"stage" : "HASH_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$x.a",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  direction: "forward"
+  |
+  PROJECTION_SIMPLE
+  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ### With random order, seed 44, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$x.a"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "count" : 2 }
-{  "_id" : 2,  "count" : 2 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "39062D46AC66A096B98DB7B9AD3C198F432183DF3436553F59C3EC8B5252F1EA",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"direction" : "forward",
-									"filter" : {
-										"d" : {
-											"$lt" : 3
-										}
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "COLLSCAN"
-								},
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "x",
-							"rightEmbeddingField" : "none",
-							"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								"b" : {
-									"$gt" : "aaa"
-								}
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "y",
-					"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$x.a",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
+```
+NESTED_LOOP_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "x"
+  rightEmbeddingField: "none"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign1]
+  filter: {  "d" : {  "$lt" : 3 } }
+  direction: "forward"
+```
 ### With random order, seed 44, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$x.a"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "count" : 2 }
-{  "_id" : 2,  "count" : 2 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "39062D46AC66A096B98DB7B9AD3C198F432183DF3436553F59C3EC8B5252F1EA",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"direction" : "forward",
-									"filter" : {
-										"d" : {
-											"$lt" : 3
-										}
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "COLLSCAN"
-								},
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "x",
-							"rightEmbeddingField" : "none",
-							"stage" : "HASH_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								"b" : {
-									"$gt" : "aaa"
-								}
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "y",
-					"stage" : "HASH_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$x.a",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
-### With random order, seed 420, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$x.a"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 1,  "count" : 2 }
-{  "_id" : 2,  "count" : 2 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "39062D46AC66A096B98DB7B9AD3C198F432183DF3436553F59C3EC8B5252F1EA",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"direction" : "forward",
-									"filter" : {
-										"b" : {
-											"$gt" : "aaa"
-										}
-									},
-									"nss" : "test.basic_joins_md_foreign2",
-									"stage" : "COLLSCAN"
-								},
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								}
-							],
-							"joinPredicates" : [
-								"b = b"
-							],
-							"leftEmbeddingField" : "y",
-							"rightEmbeddingField" : "none",
-							"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								"d" : {
-									"$lt" : 3
-								}
-							},
-							"nss" : "test.basic_joins_md_foreign1",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"a = a"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "x",
-					"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$x.a",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "x"
+  rightEmbeddingField: "none"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign1]
+  filter: {  "d" : {  "$lt" : 3 } }
+  direction: "forward"
 ```
+### With random order, seed 45, nested loop joins
 usedJoinOptimization: true
 
-### With random order, seed 420, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$x.a"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 1,  "count" : 2 }
-{  "_id" : 2,  "count" : 2 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "39062D46AC66A096B98DB7B9AD3C198F432183DF3436553F59C3EC8B5252F1EA",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"direction" : "forward",
-									"filter" : {
-										"b" : {
-											"$gt" : "aaa"
-										}
-									},
-									"nss" : "test.basic_joins_md_foreign2",
-									"stage" : "COLLSCAN"
-								},
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								}
-							],
-							"joinPredicates" : [
-								"b = b"
-							],
-							"leftEmbeddingField" : "y",
-							"rightEmbeddingField" : "none",
-							"stage" : "HASH_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								"d" : {
-									"$lt" : 3
-								}
-							},
-							"nss" : "test.basic_joins_md_foreign1",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"a = a"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "x",
-					"stage" : "HASH_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$x.a",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
+HASH_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  filter: {  "b" : {  "$gt" : "aaa" } }
+  direction: "forward"
 ```
+### With random order, seed 45, hash join enabled
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  filter: {  "b" : {  "$gt" : "aaa" } }
+  direction: "forward"
+```
 ### With fixed order, index join
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$x.a"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "count" : 2 }
-{  "_id" : 2,  "count" : 2 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "39062D46AC66A096B98DB7B9AD3C198F432183DF3436553F59C3EC8B5252F1EA",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"indexBounds" : {
-											"b" : [
-												"(\"aaa\", {})"
-											]
-										},
-										"indexName" : "b_1",
-										"isMultiKey" : false,
-										"isPartial" : false,
-										"isSparse" : false,
-										"isUnique" : false,
-										"keyPattern" : {
-											"b" : 1
-										},
-										"multiKeyPaths" : {
-											"b" : [ ]
-										},
-										"nss" : "test.basic_joins_md_foreign2",
-										"stage" : "IXSCAN"
-									},
-									"nss" : "test.basic_joins_md_foreign2",
-									"stage" : "FETCH"
-								},
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								}
-							],
-							"joinPredicates" : [
-								"b = b"
-							],
-							"leftEmbeddingField" : "y",
-							"rightEmbeddingField" : "none",
-							"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-						},
-						{
-							"filter" : {
-								"d" : {
-									"$lt" : 3
-								}
-							},
-							"inputStage" : {
-								"indexName" : "a_1",
-								"isMultiKey" : false,
-								"isPartial" : false,
-								"isSparse" : false,
-								"isUnique" : false,
-								"keyPattern" : {
-									"a" : 1
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "INDEX_PROBE_NODE"
-							},
-							"nss" : "test.basic_joins_md_foreign1",
-							"stage" : "FETCH"
-						}
-					],
-					"joinPredicates" : [
-						"a = a"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 8,
-					"rightEmbeddingField" : "x",
-					"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$x.a",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
+```
+INDEXED_NESTED_LOOP_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign1]
+  |  keyPattern: {  "a" : 1 }
+  |  indexName: "a_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  FETCH [test.basic_joins_md_foreign2]
+  
+  |
+  IXSCAN [test.basic_joins_md_foreign2]
+  keyPattern: {  "b" : 1 }
+  indexName: "b_1"
+  isMultiKey: false
+  multiKeyPaths: {  "b" : [ ] }
+  isUnique: false
+  isSparse: false
+  isPartial: false
+  direction: "forward"
+  indexBounds: {  "b" : [ "(\"aaa\", {})" ] }
+```
 ### With bottom-up plan enumeration and indexes
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$x.a"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "count" : 2 }
-{  "_id" : 2,  "count" : 2 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "39062D46AC66A096B98DB7B9AD3C198F432183DF3436553F59C3EC8B5252F1EA",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								},
-								{
-									"filter" : {
-										"d" : {
-											"$lt" : 3
-										}
-									},
-									"inputStage" : {
-										"indexName" : "a_1",
-										"isMultiKey" : false,
-										"isPartial" : false,
-										"isSparse" : false,
-										"isUnique" : false,
-										"keyPattern" : {
-											"a" : 1
-										},
-										"nss" : "test.basic_joins_md_foreign1",
-										"stage" : "INDEX_PROBE_NODE"
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "FETCH"
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "none",
-							"rightEmbeddingField" : "x",
-							"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-						},
-						{
-							"filter" : {
-								"b" : {
-									"$gt" : "aaa"
-								}
-							},
-							"inputStage" : {
-								"indexName" : "b_1",
-								"isMultiKey" : false,
-								"isPartial" : false,
-								"isSparse" : false,
-								"isUnique" : false,
-								"keyPattern" : {
-									"b" : 1
-								},
-								"nss" : "test.basic_joins_md_foreign2",
-								"stage" : "INDEX_PROBE_NODE"
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "FETCH"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 8,
-					"rightEmbeddingField" : "y",
-					"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$x.a",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
+usedJoinOptimization: true
 
+```
+INDEXED_NESTED_LOOP_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign2]
+  |  keyPattern: {  "b" : 1 }
+  |  indexName: "b_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  INDEXED_NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign1]
+  |  keyPattern: {  "a" : 1 }
+  |  indexName: "a_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  PROJECTION_SIMPLE
+  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ## 4. Example with two joins and sub-pipeline with un-correlated $match
 ### No join opt
 ### Pipeline
@@ -3778,1060 +1172,243 @@ Execution Engine: classic
 ```
 
 ### With bottom-up plan enumeration (left-deep)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "6E1AD01BB023E5575DBF8997EA4E7E46A5BCCAA49D659AFD0AB18E0D1E797FF4",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							"d" : {
-								"$lt" : 3
-							}
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					"b" : {
-						"$gt" : "aaa"
-					}
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "y",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (right-deep)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "6E1AD01BB023E5575DBF8997EA4E7E46A5BCCAA49D659AFD0AB18E0D1E797FF4",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"direction" : "forward",
-				"filter" : {
-					"b" : {
-						"$gt" : "aaa"
-					}
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			},
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							"d" : {
-								"$lt" : 3
-							}
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "y",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "none",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "y"
+rightEmbeddingField: "none"
+  |  |
+  |  HASH_JOIN_EMBEDDING [a = a]
+  |  leftEmbeddingField: "none"
+  |  rightEmbeddingField: "x"
+  |  |  |
+  |  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  |  direction: "forward"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  filter: {  "b" : {  "$gt" : "aaa" } }
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (zig-zag)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "6E1AD01BB023E5575DBF8997EA4E7E46A5BCCAA49D659AFD0AB18E0D1E797FF4",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							"d" : {
-								"$lt" : 3
-							}
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					"b" : {
-						"$gt" : "aaa"
-					}
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "y",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ### With random order, seed 44, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "6E1AD01BB023E5575DBF8997EA4E7E46A5BCCAA49D659AFD0AB18E0D1E797FF4",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							"d" : {
-								"$lt" : 3
-							}
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "x",
-				"rightEmbeddingField" : "none",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					"b" : {
-						"$gt" : "aaa"
-					}
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "y",
-		"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+NESTED_LOOP_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "x"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign1]
+  filter: {  "d" : {  "$lt" : 3 } }
+  direction: "forward"
+```
 ### With random order, seed 44, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "6E1AD01BB023E5575DBF8997EA4E7E46A5BCCAA49D659AFD0AB18E0D1E797FF4",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							"d" : {
-								"$lt" : 3
-							}
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "x",
-				"rightEmbeddingField" : "none",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					"b" : {
-						"$gt" : "aaa"
-					}
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "y",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
-### With random order, seed 420, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "6E1AD01BB023E5575DBF8997EA4E7E46A5BCCAA49D659AFD0AB18E0D1E797FF4",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							"b" : {
-								"$gt" : "aaa"
-							}
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"b = b"
-				],
-				"leftEmbeddingField" : "y",
-				"rightEmbeddingField" : "none",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					"d" : {
-						"$lt" : 3
-					}
-				},
-				"nss" : "test.basic_joins_md_foreign1",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"a = a"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "x",
-		"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "x"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign1]
+  filter: {  "d" : {  "$lt" : 3 } }
+  direction: "forward"
 ```
+### With random order, seed 45, nested loop joins
 usedJoinOptimization: true
 
-### With random order, seed 420, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "6E1AD01BB023E5575DBF8997EA4E7E46A5BCCAA49D659AFD0AB18E0D1E797FF4",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							"b" : {
-								"$gt" : "aaa"
-							}
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"b = b"
-				],
-				"leftEmbeddingField" : "y",
-				"rightEmbeddingField" : "none",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					"d" : {
-						"$lt" : 3
-					}
-				},
-				"nss" : "test.basic_joins_md_foreign1",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"a = a"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "x",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
+HASH_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  filter: {  "b" : {  "$gt" : "aaa" } }
+  direction: "forward"
 ```
+### With random order, seed 45, hash join enabled
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  filter: {  "b" : {  "$gt" : "aaa" } }
+  direction: "forward"
+```
 ### With fixed order, index join
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "6E1AD01BB023E5575DBF8997EA4E7E46A5BCCAA49D659AFD0AB18E0D1E797FF4",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStage" : {
-							"direction" : "forward",
-							"indexBounds" : {
-								"b" : [
-									"(\"aaa\", {})"
-								]
-							},
-							"indexName" : "b_1",
-							"isMultiKey" : false,
-							"isPartial" : false,
-							"isSparse" : false,
-							"isUnique" : false,
-							"keyPattern" : {
-								"b" : 1
-							},
-							"multiKeyPaths" : {
-								"b" : [ ]
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "IXSCAN"
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "FETCH"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"b = b"
-				],
-				"leftEmbeddingField" : "y",
-				"rightEmbeddingField" : "none",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"filter" : {
-					"d" : {
-						"$lt" : 3
-					}
-				},
-				"inputStage" : {
-					"indexName" : "a_1",
-					"isMultiKey" : false,
-					"isPartial" : false,
-					"isSparse" : false,
-					"isUnique" : false,
-					"keyPattern" : {
-						"a" : 1
-					},
-					"nss" : "test.basic_joins_md_foreign1",
-					"stage" : "INDEX_PROBE_NODE"
-				},
-				"nss" : "test.basic_joins_md_foreign1",
-				"stage" : "FETCH"
-			}
-		],
-		"joinPredicates" : [
-			"a = a"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "x",
-		"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+INDEXED_NESTED_LOOP_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign1]
+  |  keyPattern: {  "a" : 1 }
+  |  indexName: "a_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  FETCH [test.basic_joins_md_foreign2]
+  
+  |
+  IXSCAN [test.basic_joins_md_foreign2]
+  keyPattern: {  "b" : 1 }
+  indexName: "b_1"
+  isMultiKey: false
+  multiKeyPaths: {  "b" : [ ] }
+  isUnique: false
+  isSparse: false
+  isPartial: false
+  direction: "forward"
+  indexBounds: {  "b" : [ "(\"aaa\", {})" ] }
+```
 ### With bottom-up plan enumeration and indexes
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "6E1AD01BB023E5575DBF8997EA4E7E46A5BCCAA49D659AFD0AB18E0D1E797FF4",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"filter" : {
-							"d" : {
-								"$lt" : 3
-							}
-						},
-						"inputStage" : {
-							"indexName" : "a_1",
-							"isMultiKey" : false,
-							"isPartial" : false,
-							"isSparse" : false,
-							"isUnique" : false,
-							"keyPattern" : {
-								"a" : 1
-							},
-							"nss" : "test.basic_joins_md_foreign1",
-							"stage" : "INDEX_PROBE_NODE"
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "FETCH"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"filter" : {
-					"b" : {
-						"$gt" : "aaa"
-					}
-				},
-				"inputStage" : {
-					"indexName" : "b_1",
-					"isMultiKey" : false,
-					"isPartial" : false,
-					"isSparse" : false,
-					"isUnique" : false,
-					"keyPattern" : {
-						"b" : 1
-					},
-					"nss" : "test.basic_joins_md_foreign2",
-					"stage" : "INDEX_PROBE_NODE"
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "FETCH"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "y",
-		"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
-```
+usedJoinOptimization: true
 
+```
+INDEXED_NESTED_LOOP_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign2]
+  |  keyPattern: {  "b" : 1 }
+  |  indexName: "b_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  INDEXED_NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign1]
+  |  keyPattern: {  "a" : 1 }
+  |  indexName: "a_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ## 5. Example with two joins, suffix, and sub-pipeline with un-correlated $match and $match prefix
 ### No join opt
 ### Pipeline
@@ -4992,1429 +1569,279 @@ Execution Engine: classic
 ```
 
 ### With bottom-up plan enumeration (left-deep)
-### Pipeline
-```json
-[
-	{
-		"$match" : {
-			"a" : {
-				"$gt" : 1
-			}
-		}
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$x.a"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "count" : 2 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "7D59BE511C0D33652DB26A61DFFA0D36F47580971FB97DF9C3C4BC3A3F52F932",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											"a" : {
-												"$gt" : 1
-											}
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								},
-								{
-									"direction" : "forward",
-									"filter" : {
-										"d" : {
-											"$lt" : 3
-										}
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "COLLSCAN"
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "none",
-							"rightEmbeddingField" : "x",
-							"stage" : "HASH_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								"b" : {
-									"$gt" : "aaa"
-								}
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "y",
-					"stage" : "HASH_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$x.a",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  direction: "forward"
+  |
+  PROJECTION_SIMPLE
+  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |
+  COLLSCAN [test.basic_joins_md]
+  filter: {  "a" : {  "$gt" : 1 } }
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (right-deep)
-### Pipeline
-```json
-[
-	{
-		"$match" : {
-			"a" : {
-				"$gt" : 1
-			}
-		}
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$x.a"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "count" : 2 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "7D59BE511C0D33652DB26A61DFFA0D36F47580971FB97DF9C3C4BC3A3F52F932",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"direction" : "forward",
-							"filter" : {
-								"b" : {
-									"$gt" : "aaa"
-								}
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "COLLSCAN"
-						},
-						{
-							"inputStages" : [
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											"a" : {
-												"$gt" : 1
-											}
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								},
-								{
-									"direction" : "forward",
-									"filter" : {
-										"d" : {
-											"$lt" : 3
-										}
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "COLLSCAN"
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "none",
-							"rightEmbeddingField" : "x",
-							"stage" : "HASH_JOIN_EMBEDDING"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "y",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "none",
-					"stage" : "HASH_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$x.a",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "y"
+rightEmbeddingField: "none"
+  |  |
+  |  HASH_JOIN_EMBEDDING [a = a]
+  |  leftEmbeddingField: "none"
+  |  rightEmbeddingField: "x"
+  |  |  |
+  |  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  |  direction: "forward"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  filter: {  "a" : {  "$gt" : 1 } }
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  filter: {  "b" : {  "$gt" : "aaa" } }
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (zig-zag)
-### Pipeline
-```json
-[
-	{
-		"$match" : {
-			"a" : {
-				"$gt" : 1
-			}
-		}
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$x.a"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "count" : 2 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "7D59BE511C0D33652DB26A61DFFA0D36F47580971FB97DF9C3C4BC3A3F52F932",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											"a" : {
-												"$gt" : 1
-											}
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								},
-								{
-									"direction" : "forward",
-									"filter" : {
-										"d" : {
-											"$lt" : 3
-										}
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "COLLSCAN"
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "none",
-							"rightEmbeddingField" : "x",
-							"stage" : "HASH_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								"b" : {
-									"$gt" : "aaa"
-								}
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "y",
-					"stage" : "HASH_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$x.a",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  direction: "forward"
+  |
+  PROJECTION_SIMPLE
+  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |
+  COLLSCAN [test.basic_joins_md]
+  filter: {  "a" : {  "$gt" : 1 } }
+  direction: "forward"
+```
 ### With random order, seed 44, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$match" : {
-			"a" : {
-				"$gt" : 1
-			}
-		}
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$x.a"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "count" : 2 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "7D59BE511C0D33652DB26A61DFFA0D36F47580971FB97DF9C3C4BC3A3F52F932",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"direction" : "forward",
-									"filter" : {
-										"d" : {
-											"$lt" : 3
-										}
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "COLLSCAN"
-								},
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											"a" : {
-												"$gt" : 1
-											}
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "x",
-							"rightEmbeddingField" : "none",
-							"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								"b" : {
-									"$gt" : "aaa"
-								}
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "y",
-					"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$x.a",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
+```
+NESTED_LOOP_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "x"
+  rightEmbeddingField: "none"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  filter: {  "a" : {  "$gt" : 1 } }
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign1]
+  filter: {  "d" : {  "$lt" : 3 } }
+  direction: "forward"
+```
 ### With random order, seed 44, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$match" : {
-			"a" : {
-				"$gt" : 1
-			}
-		}
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$x.a"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "count" : 2 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "7D59BE511C0D33652DB26A61DFFA0D36F47580971FB97DF9C3C4BC3A3F52F932",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"direction" : "forward",
-									"filter" : {
-										"d" : {
-											"$lt" : 3
-										}
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "COLLSCAN"
-								},
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											"a" : {
-												"$gt" : 1
-											}
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "x",
-							"rightEmbeddingField" : "none",
-							"stage" : "HASH_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								"b" : {
-									"$gt" : "aaa"
-								}
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "y",
-					"stage" : "HASH_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$x.a",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
-### With random order, seed 420, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$match" : {
-			"a" : {
-				"$gt" : 1
-			}
-		}
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$x.a"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 2,  "count" : 2 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "7D59BE511C0D33652DB26A61DFFA0D36F47580971FB97DF9C3C4BC3A3F52F932",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"direction" : "forward",
-									"filter" : {
-										"b" : {
-											"$gt" : "aaa"
-										}
-									},
-									"nss" : "test.basic_joins_md_foreign2",
-									"stage" : "COLLSCAN"
-								},
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											"a" : {
-												"$gt" : 1
-											}
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								}
-							],
-							"joinPredicates" : [
-								"b = b"
-							],
-							"leftEmbeddingField" : "y",
-							"rightEmbeddingField" : "none",
-							"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								"d" : {
-									"$lt" : 3
-								}
-							},
-							"nss" : "test.basic_joins_md_foreign1",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"a = a"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "x",
-					"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$x.a",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "x"
+  rightEmbeddingField: "none"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  filter: {  "a" : {  "$gt" : 1 } }
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign1]
+  filter: {  "d" : {  "$lt" : 3 } }
+  direction: "forward"
 ```
+### With random order, seed 45, nested loop joins
 usedJoinOptimization: true
 
-### With random order, seed 420, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$match" : {
-			"a" : {
-				"$gt" : 1
-			}
-		}
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$x.a"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 2,  "count" : 2 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "7D59BE511C0D33652DB26A61DFFA0D36F47580971FB97DF9C3C4BC3A3F52F932",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"direction" : "forward",
-									"filter" : {
-										"b" : {
-											"$gt" : "aaa"
-										}
-									},
-									"nss" : "test.basic_joins_md_foreign2",
-									"stage" : "COLLSCAN"
-								},
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											"a" : {
-												"$gt" : 1
-											}
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								}
-							],
-							"joinPredicates" : [
-								"b = b"
-							],
-							"leftEmbeddingField" : "y",
-							"rightEmbeddingField" : "none",
-							"stage" : "HASH_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								"d" : {
-									"$lt" : 3
-								}
-							},
-							"nss" : "test.basic_joins_md_foreign1",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"a = a"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "x",
-					"stage" : "HASH_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$x.a",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
+HASH_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  filter: {  "a" : {  "$gt" : 1 } }
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  filter: {  "b" : {  "$gt" : "aaa" } }
+  direction: "forward"
 ```
+### With random order, seed 45, hash join enabled
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  filter: {  "a" : {  "$gt" : 1 } }
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  filter: {  "b" : {  "$gt" : "aaa" } }
+  direction: "forward"
+```
 ### With fixed order, index join
-### Pipeline
-```json
-[
-	{
-		"$match" : {
-			"a" : {
-				"$gt" : 1
-			}
-		}
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$x.a"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "count" : 2 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "7D59BE511C0D33652DB26A61DFFA0D36F47580971FB97DF9C3C4BC3A3F52F932",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"indexBounds" : {
-											"b" : [
-												"(\"aaa\", {})"
-											]
-										},
-										"indexName" : "b_1",
-										"isMultiKey" : false,
-										"isPartial" : false,
-										"isSparse" : false,
-										"isUnique" : false,
-										"keyPattern" : {
-											"b" : 1
-										},
-										"multiKeyPaths" : {
-											"b" : [ ]
-										},
-										"nss" : "test.basic_joins_md_foreign2",
-										"stage" : "IXSCAN"
-									},
-									"nss" : "test.basic_joins_md_foreign2",
-									"stage" : "FETCH"
-								},
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											"a" : {
-												"$gt" : 1
-											}
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								}
-							],
-							"joinPredicates" : [
-								"b = b"
-							],
-							"leftEmbeddingField" : "y",
-							"rightEmbeddingField" : "none",
-							"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-						},
-						{
-							"filter" : {
-								"d" : {
-									"$lt" : 3
-								}
-							},
-							"inputStage" : {
-								"indexName" : "a_1",
-								"isMultiKey" : false,
-								"isPartial" : false,
-								"isSparse" : false,
-								"isUnique" : false,
-								"keyPattern" : {
-									"a" : 1
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "INDEX_PROBE_NODE"
-							},
-							"nss" : "test.basic_joins_md_foreign1",
-							"stage" : "FETCH"
-						}
-					],
-					"joinPredicates" : [
-						"a = a"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 8,
-					"rightEmbeddingField" : "x",
-					"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$x.a",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
+```
+INDEXED_NESTED_LOOP_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign1]
+  |  keyPattern: {  "a" : 1 }
+  |  indexName: "a_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  filter: {  "a" : {  "$gt" : 1 } }
+  |  direction: "forward"
+  |
+  FETCH [test.basic_joins_md_foreign2]
+  
+  |
+  IXSCAN [test.basic_joins_md_foreign2]
+  keyPattern: {  "b" : 1 }
+  indexName: "b_1"
+  isMultiKey: false
+  multiKeyPaths: {  "b" : [ ] }
+  isUnique: false
+  isSparse: false
+  isPartial: false
+  direction: "forward"
+  indexBounds: {  "b" : [ "(\"aaa\", {})" ] }
+```
 ### With bottom-up plan enumeration and indexes
-### Pipeline
-```json
-[
-	{
-		"$match" : {
-			"a" : {
-				"$gt" : 1
-			}
-		}
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$x.a"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "count" : 2 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "7D59BE511C0D33652DB26A61DFFA0D36F47580971FB97DF9C3C4BC3A3F52F932",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											"a" : {
-												"$gt" : 1
-											}
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								},
-								{
-									"filter" : {
-										"d" : {
-											"$lt" : 3
-										}
-									},
-									"inputStage" : {
-										"indexName" : "a_1",
-										"isMultiKey" : false,
-										"isPartial" : false,
-										"isSparse" : false,
-										"isUnique" : false,
-										"keyPattern" : {
-											"a" : 1
-										},
-										"nss" : "test.basic_joins_md_foreign1",
-										"stage" : "INDEX_PROBE_NODE"
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "FETCH"
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "none",
-							"rightEmbeddingField" : "x",
-							"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-						},
-						{
-							"filter" : {
-								"b" : {
-									"$gt" : "aaa"
-								}
-							},
-							"inputStage" : {
-								"indexName" : "b_1",
-								"isMultiKey" : false,
-								"isPartial" : false,
-								"isSparse" : false,
-								"isUnique" : false,
-								"keyPattern" : {
-									"b" : 1
-								},
-								"nss" : "test.basic_joins_md_foreign2",
-								"stage" : "INDEX_PROBE_NODE"
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "FETCH"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 8,
-					"rightEmbeddingField" : "y",
-					"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$x.a",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
+usedJoinOptimization: true
 
+```
+INDEXED_NESTED_LOOP_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign2]
+  |  keyPattern: {  "b" : 1 }
+  |  indexName: "b_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  INDEXED_NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign1]
+  |  keyPattern: {  "a" : 1 }
+  |  indexName: "a_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  PROJECTION_SIMPLE
+  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |
+  COLLSCAN [test.basic_joins_md]
+  filter: {  "a" : {  "$gt" : 1 } }
+  direction: "forward"
+```
 ## 6. Example with two joins and sub-pipeline with un-correlated $match and $match prefix
 ### No join opt
 ### Pipeline
@@ -6547,1123 +1974,252 @@ Execution Engine: classic
 ```
 
 ### With bottom-up plan enumeration (left-deep)
-### Pipeline
-```json
-[
-	{
-		"$match" : {
-			"a" : {
-				"$gt" : 1
-			}
-		}
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "D2D2550CF530351E25FFDB1BB9DBD96DD0CE98C0FA4082BADF1F9BC9F7579A03",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							"a" : {
-								"$gt" : 1
-							}
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							"d" : {
-								"$lt" : 3
-							}
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					"b" : {
-						"$gt" : "aaa"
-					}
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "y",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md]
+  filter: {  "a" : {  "$gt" : 1 } }
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (right-deep)
-### Pipeline
-```json
-[
-	{
-		"$match" : {
-			"a" : {
-				"$gt" : 1
-			}
-		}
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "D2D2550CF530351E25FFDB1BB9DBD96DD0CE98C0FA4082BADF1F9BC9F7579A03",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"direction" : "forward",
-				"filter" : {
-					"b" : {
-						"$gt" : "aaa"
-					}
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			},
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							"a" : {
-								"$gt" : 1
-							}
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							"d" : {
-								"$lt" : 3
-							}
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "y",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "none",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "y"
+rightEmbeddingField: "none"
+  |  |
+  |  HASH_JOIN_EMBEDDING [a = a]
+  |  leftEmbeddingField: "none"
+  |  rightEmbeddingField: "x"
+  |  |  |
+  |  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  |  direction: "forward"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  filter: {  "a" : {  "$gt" : 1 } }
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  filter: {  "b" : {  "$gt" : "aaa" } }
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (zig-zag)
-### Pipeline
-```json
-[
-	{
-		"$match" : {
-			"a" : {
-				"$gt" : 1
-			}
-		}
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "D2D2550CF530351E25FFDB1BB9DBD96DD0CE98C0FA4082BADF1F9BC9F7579A03",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							"a" : {
-								"$gt" : 1
-							}
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							"d" : {
-								"$lt" : 3
-							}
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					"b" : {
-						"$gt" : "aaa"
-					}
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "y",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md]
+  filter: {  "a" : {  "$gt" : 1 } }
+  direction: "forward"
+```
 ### With random order, seed 44, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$match" : {
-			"a" : {
-				"$gt" : 1
-			}
-		}
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "D2D2550CF530351E25FFDB1BB9DBD96DD0CE98C0FA4082BADF1F9BC9F7579A03",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							"d" : {
-								"$lt" : 3
-							}
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							"a" : {
-								"$gt" : 1
-							}
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "x",
-				"rightEmbeddingField" : "none",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					"b" : {
-						"$gt" : "aaa"
-					}
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "y",
-		"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+NESTED_LOOP_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "x"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  filter: {  "a" : {  "$gt" : 1 } }
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign1]
+  filter: {  "d" : {  "$lt" : 3 } }
+  direction: "forward"
+```
 ### With random order, seed 44, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$match" : {
-			"a" : {
-				"$gt" : 1
-			}
-		}
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "D2D2550CF530351E25FFDB1BB9DBD96DD0CE98C0FA4082BADF1F9BC9F7579A03",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							"d" : {
-								"$lt" : 3
-							}
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							"a" : {
-								"$gt" : 1
-							}
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "x",
-				"rightEmbeddingField" : "none",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					"b" : {
-						"$gt" : "aaa"
-					}
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "y",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
-### With random order, seed 420, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$match" : {
-			"a" : {
-				"$gt" : 1
-			}
-		}
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "D2D2550CF530351E25FFDB1BB9DBD96DD0CE98C0FA4082BADF1F9BC9F7579A03",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							"b" : {
-								"$gt" : "aaa"
-							}
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							"a" : {
-								"$gt" : 1
-							}
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"b = b"
-				],
-				"leftEmbeddingField" : "y",
-				"rightEmbeddingField" : "none",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					"d" : {
-						"$lt" : 3
-					}
-				},
-				"nss" : "test.basic_joins_md_foreign1",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"a = a"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "x",
-		"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "x"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  filter: {  "a" : {  "$gt" : 1 } }
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign1]
+  filter: {  "d" : {  "$lt" : 3 } }
+  direction: "forward"
 ```
+### With random order, seed 45, nested loop joins
 usedJoinOptimization: true
 
-### With random order, seed 420, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$match" : {
-			"a" : {
-				"$gt" : 1
-			}
-		}
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "D2D2550CF530351E25FFDB1BB9DBD96DD0CE98C0FA4082BADF1F9BC9F7579A03",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							"b" : {
-								"$gt" : "aaa"
-							}
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							"a" : {
-								"$gt" : 1
-							}
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"b = b"
-				],
-				"leftEmbeddingField" : "y",
-				"rightEmbeddingField" : "none",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					"d" : {
-						"$lt" : 3
-					}
-				},
-				"nss" : "test.basic_joins_md_foreign1",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"a = a"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "x",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
+HASH_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  filter: {  "a" : {  "$gt" : 1 } }
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  filter: {  "b" : {  "$gt" : "aaa" } }
+  direction: "forward"
 ```
+### With random order, seed 45, hash join enabled
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  filter: {  "a" : {  "$gt" : 1 } }
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  filter: {  "b" : {  "$gt" : "aaa" } }
+  direction: "forward"
+```
 ### With fixed order, index join
-### Pipeline
-```json
-[
-	{
-		"$match" : {
-			"a" : {
-				"$gt" : 1
-			}
-		}
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "D2D2550CF530351E25FFDB1BB9DBD96DD0CE98C0FA4082BADF1F9BC9F7579A03",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStage" : {
-							"direction" : "forward",
-							"indexBounds" : {
-								"b" : [
-									"(\"aaa\", {})"
-								]
-							},
-							"indexName" : "b_1",
-							"isMultiKey" : false,
-							"isPartial" : false,
-							"isSparse" : false,
-							"isUnique" : false,
-							"keyPattern" : {
-								"b" : 1
-							},
-							"multiKeyPaths" : {
-								"b" : [ ]
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "IXSCAN"
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "FETCH"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							"a" : {
-								"$gt" : 1
-							}
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"b = b"
-				],
-				"leftEmbeddingField" : "y",
-				"rightEmbeddingField" : "none",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"filter" : {
-					"d" : {
-						"$lt" : 3
-					}
-				},
-				"inputStage" : {
-					"indexName" : "a_1",
-					"isMultiKey" : false,
-					"isPartial" : false,
-					"isSparse" : false,
-					"isUnique" : false,
-					"keyPattern" : {
-						"a" : 1
-					},
-					"nss" : "test.basic_joins_md_foreign1",
-					"stage" : "INDEX_PROBE_NODE"
-				},
-				"nss" : "test.basic_joins_md_foreign1",
-				"stage" : "FETCH"
-			}
-		],
-		"joinPredicates" : [
-			"a = a"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "x",
-		"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+INDEXED_NESTED_LOOP_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign1]
+  |  keyPattern: {  "a" : 1 }
+  |  indexName: "a_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  filter: {  "a" : {  "$gt" : 1 } }
+  |  direction: "forward"
+  |
+  FETCH [test.basic_joins_md_foreign2]
+  
+  |
+  IXSCAN [test.basic_joins_md_foreign2]
+  keyPattern: {  "b" : 1 }
+  indexName: "b_1"
+  isMultiKey: false
+  multiKeyPaths: {  "b" : [ ] }
+  isUnique: false
+  isSparse: false
+  isPartial: false
+  direction: "forward"
+  indexBounds: {  "b" : [ "(\"aaa\", {})" ] }
+```
 ### With bottom-up plan enumeration and indexes
-### Pipeline
-```json
-[
-	{
-		"$match" : {
-			"a" : {
-				"$gt" : 1
-			}
-		}
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "D2D2550CF530351E25FFDB1BB9DBD96DD0CE98C0FA4082BADF1F9BC9F7579A03",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							"a" : {
-								"$gt" : 1
-							}
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"filter" : {
-							"d" : {
-								"$lt" : 3
-							}
-						},
-						"inputStage" : {
-							"indexName" : "a_1",
-							"isMultiKey" : false,
-							"isPartial" : false,
-							"isSparse" : false,
-							"isUnique" : false,
-							"keyPattern" : {
-								"a" : 1
-							},
-							"nss" : "test.basic_joins_md_foreign1",
-							"stage" : "INDEX_PROBE_NODE"
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "FETCH"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"filter" : {
-					"b" : {
-						"$gt" : "aaa"
-					}
-				},
-				"inputStage" : {
-					"indexName" : "b_1",
-					"isMultiKey" : false,
-					"isPartial" : false,
-					"isSparse" : false,
-					"isUnique" : false,
-					"keyPattern" : {
-						"b" : 1
-					},
-					"nss" : "test.basic_joins_md_foreign2",
-					"stage" : "INDEX_PROBE_NODE"
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "FETCH"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "y",
-		"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
-```
+usedJoinOptimization: true
 
+```
+INDEXED_NESTED_LOOP_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign2]
+  |  keyPattern: {  "b" : 1 }
+  |  indexName: "b_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  INDEXED_NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign1]
+  |  keyPattern: {  "a" : 1 }
+  |  indexName: "a_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  COLLSCAN [test.basic_joins_md]
+  filter: {  "a" : {  "$gt" : 1 } }
+  direction: "forward"
+```
 ## 7. Basic example with referencing field from previous lookup
 ### No join opt
 ### Pipeline
@@ -7744,822 +2300,202 @@ Execution Engine: classic
 ```
 
 ### With bottom-up plan enumeration (left-deep)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 0,  "a" : 1,  "b" : "foo",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DC5CAF413E9B6B8B5E8B2D3FB91E4D546524BF2707BBE30472D5CA8E12F6637E",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign3",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"x.c = c"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "z",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [x.c = c]
+leftEmbeddingField: "none"
+rightEmbeddingField: "z"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (right-deep)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 0,  "a" : 1,  "b" : "foo",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DC5CAF413E9B6B8B5E8B2D3FB91E4D546524BF2707BBE30472D5CA8E12F6637E",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign3",
-				"stage" : "COLLSCAN"
-			},
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			}
-		],
-		"joinPredicates" : [
-			"c = x.c"
-		],
-		"leftEmbeddingField" : "z",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "none",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [c = x.c]
+leftEmbeddingField: "z"
+rightEmbeddingField: "none"
+  |  |
+  |  HASH_JOIN_EMBEDDING [a = a]
+  |  leftEmbeddingField: "none"
+  |  rightEmbeddingField: "x"
+  |  |  |
+  |  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  |  direction: "forward"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign3]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (zig-zag)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 0,  "a" : 1,  "b" : "foo",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DC5CAF413E9B6B8B5E8B2D3FB91E4D546524BF2707BBE30472D5CA8E12F6637E",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign3",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"x.c = c"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "z",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [x.c = c]
+leftEmbeddingField: "none"
+rightEmbeddingField: "z"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ### With random order, seed 44, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 0,  "a" : 1,  "b" : "foo",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DC5CAF413E9B6B8B5E8B2D3FB91E4D546524BF2707BBE30472D5CA8E12F6637E",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "x",
-				"rightEmbeddingField" : "none",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign3",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"x.c = c"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "z",
-		"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+NESTED_LOOP_JOIN_EMBEDDING [x.c = c]
+leftEmbeddingField: "none"
+rightEmbeddingField: "z"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "x"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign1]
+  direction: "forward"
+```
 ### With random order, seed 44, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 0,  "a" : 1,  "b" : "foo",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DC5CAF413E9B6B8B5E8B2D3FB91E4D546524BF2707BBE30472D5CA8E12F6637E",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "x",
-				"rightEmbeddingField" : "none",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign3",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"x.c = c"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "z",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
-### With random order, seed 420, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 0,  "a" : 1,  "b" : "foo",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DC5CAF413E9B6B8B5E8B2D3FB91E4D546524BF2707BBE30472D5CA8E12F6637E",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign3",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"c = c"
-				],
-				"leftEmbeddingField" : "z",
-				"rightEmbeddingField" : "x",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"x.a = a"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "none",
-		"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
+HASH_JOIN_EMBEDDING [x.c = c]
+leftEmbeddingField: "none"
+rightEmbeddingField: "z"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "x"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign1]
+  direction: "forward"
 ```
+### With random order, seed 45, nested loop joins
 usedJoinOptimization: true
 
-### With random order, seed 420, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 0,  "a" : 1,  "b" : "foo",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DC5CAF413E9B6B8B5E8B2D3FB91E4D546524BF2707BBE30472D5CA8E12F6637E",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign3",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"c = c"
-				],
-				"leftEmbeddingField" : "z",
-				"rightEmbeddingField" : "x",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"x.a = a"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "none",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
+HASH_JOIN_EMBEDDING [x.a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [c = c]
+  leftEmbeddingField: "z"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign3]
+  direction: "forward"
 ```
+### With random order, seed 45, hash join enabled
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [x.a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [c = c]
+  leftEmbeddingField: "z"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign3]
+  direction: "forward"
+```
 ### With fixed order, index join
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 0,  "a" : 1,  "b" : "foo",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DC5CAF413E9B6B8B5E8B2D3FB91E4D546524BF2707BBE30472D5CA8E12F6637E",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign3",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"c = c"
-				],
-				"leftEmbeddingField" : "z",
-				"rightEmbeddingField" : "x",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"x.a = a"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "none",
-		"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+NESTED_LOOP_JOIN_EMBEDDING [x.a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [c = c]
+  leftEmbeddingField: "z"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign3]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration and indexes
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 0,  "a" : 1,  "b" : "foo",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DC5CAF413E9B6B8B5E8B2D3FB91E4D546524BF2707BBE30472D5CA8E12F6637E",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"inputStage" : {
-							"indexName" : "a_1",
-							"isMultiKey" : false,
-							"isPartial" : false,
-							"isSparse" : false,
-							"isUnique" : false,
-							"keyPattern" : {
-								"a" : 1
-							},
-							"nss" : "test.basic_joins_md_foreign1",
-							"stage" : "INDEX_PROBE_NODE"
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "FETCH"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign3",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"x.c = c"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 6,
-		"rightEmbeddingField" : "z",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
+usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [x.c = c]
+leftEmbeddingField: "none"
+rightEmbeddingField: "z"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  INDEXED_NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign1]
+  |  
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign1]
+  |  keyPattern: {  "a" : 1 }
+  |  indexName: "a_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ## 8. Basic example with 3 joins & subsequent join referencing fields from previous lookups
 ### No join opt
 ### Pipeline
@@ -8664,1117 +2600,281 @@ Execution Engine: classic
 ```
 
 ### With bottom-up plan enumeration (left-deep)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DD24FFAE1F16C6C1F5B03939E0C642A797120A2585058C72554C9649BEA427AB",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"a = a"
-						],
-						"leftEmbeddingField" : "none",
-						"rightEmbeddingField" : "x",
-						"stage" : "HASH_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"b = b"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "y",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign3",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"x.c = c"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "z",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [x.c = c]
+leftEmbeddingField: "none"
+rightEmbeddingField: "z"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (right-deep)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DD24FFAE1F16C6C1F5B03939E0C642A797120A2585058C72554C9649BEA427AB",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign3",
-				"stage" : "COLLSCAN"
-			},
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"a = a"
-						],
-						"leftEmbeddingField" : "none",
-						"rightEmbeddingField" : "x",
-						"stage" : "HASH_JOIN_EMBEDDING"
-					}
-				],
-				"joinPredicates" : [
-					"b = b"
-				],
-				"leftEmbeddingField" : "y",
-				"rightEmbeddingField" : "none",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			}
-		],
-		"joinPredicates" : [
-			"c = x.c"
-		],
-		"leftEmbeddingField" : "z",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "none",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [c = x.c]
+leftEmbeddingField: "z"
+rightEmbeddingField: "none"
+  |  |
+  |  HASH_JOIN_EMBEDDING [b = b]
+  |  leftEmbeddingField: "y"
+  |  rightEmbeddingField: "none"
+  |  |  |
+  |  |  HASH_JOIN_EMBEDDING [a = a]
+  |  |  leftEmbeddingField: "none"
+  |  |  rightEmbeddingField: "x"
+  |  |  |  |
+  |  |  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  |  |  direction: "forward"
+  |  |  |
+  |  |  COLLSCAN [test.basic_joins_md]
+  |  |  direction: "forward"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign3]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (zig-zag)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DD24FFAE1F16C6C1F5B03939E0C642A797120A2585058C72554C9649BEA427AB",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign3",
-				"stage" : "COLLSCAN"
-			},
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"a = a"
-						],
-						"leftEmbeddingField" : "none",
-						"rightEmbeddingField" : "x",
-						"stage" : "HASH_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"b = b"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "y",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			}
-		],
-		"joinPredicates" : [
-			"c = x.c"
-		],
-		"leftEmbeddingField" : "z",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "none",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [c = x.c]
+leftEmbeddingField: "z"
+rightEmbeddingField: "none"
+  |  |
+  |  HASH_JOIN_EMBEDDING [b = b]
+  |  leftEmbeddingField: "none"
+  |  rightEmbeddingField: "y"
+  |  |  |
+  |  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  |  direction: "forward"
+  |  |
+  |  HASH_JOIN_EMBEDDING [a = a]
+  |  leftEmbeddingField: "none"
+  |  rightEmbeddingField: "x"
+  |  |  |
+  |  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  |  direction: "forward"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign3]
+  direction: "forward"
+```
 ### With random order, seed 44, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DD24FFAE1F16C6C1F5B03939E0C642A797120A2585058C72554C9649BEA427AB",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"a = a"
-						],
-						"leftEmbeddingField" : "none",
-						"rightEmbeddingField" : "x",
-						"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign3",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"x.c = c"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "z",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "y",
-		"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+NESTED_LOOP_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [x.c = c]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "z"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ### With random order, seed 44, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DD24FFAE1F16C6C1F5B03939E0C642A797120A2585058C72554C9649BEA427AB",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"a = a"
-						],
-						"leftEmbeddingField" : "none",
-						"rightEmbeddingField" : "x",
-						"stage" : "HASH_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign3",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"x.c = c"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "z",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "y",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
-### With random order, seed 420, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DD24FFAE1F16C6C1F5B03939E0C642A797120A2585058C72554C9649BEA427AB",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign3",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"c = c"
-						],
-						"leftEmbeddingField" : "x",
-						"rightEmbeddingField" : "z",
-						"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"x.a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "none",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "y",
-		"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [x.c = c]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "z"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
 ```
+### With random order, seed 45, nested loop joins
 usedJoinOptimization: true
 
-### With random order, seed 420, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DD24FFAE1F16C6C1F5B03939E0C642A797120A2585058C72554C9649BEA427AB",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign3",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"c = c"
-						],
-						"leftEmbeddingField" : "x",
-						"rightEmbeddingField" : "z",
-						"stage" : "HASH_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"x.a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "none",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "y",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [x.a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [c = c]
+  leftEmbeddingField: "z"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign3]
+  direction: "forward"
 ```
+### With random order, seed 45, hash join enabled
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [x.a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [c = c]
+  leftEmbeddingField: "z"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign3]
+  direction: "forward"
+```
 ### With fixed order, index join
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DD24FFAE1F16C6C1F5B03939E0C642A797120A2585058C72554C9649BEA427AB",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign3",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"c = c"
-						],
-						"leftEmbeddingField" : "x",
-						"rightEmbeddingField" : "z",
-						"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"x.a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "none",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"inputStage" : {
-					"indexName" : "b_1",
-					"isMultiKey" : false,
-					"isPartial" : false,
-					"isSparse" : false,
-					"isUnique" : false,
-					"keyPattern" : {
-						"b" : 1
-					},
-					"nss" : "test.basic_joins_md_foreign2",
-					"stage" : "INDEX_PROBE_NODE"
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "FETCH"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 8,
-		"rightEmbeddingField" : "y",
-		"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+INDEXED_NESTED_LOOP_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign2]
+  |  
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign2]
+  |  keyPattern: {  "b" : 1 }
+  |  indexName: "b_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [x.a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [c = c]
+  leftEmbeddingField: "z"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign3]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration and indexes
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DD24FFAE1F16C6C1F5B03939E0C642A797120A2585058C72554C9649BEA427AB",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"inputStage" : {
-									"indexName" : "a_1",
-									"isMultiKey" : false,
-									"isPartial" : false,
-									"isSparse" : false,
-									"isUnique" : false,
-									"keyPattern" : {
-										"a" : 1
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "INDEX_PROBE_NODE"
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "FETCH"
-							}
-						],
-						"joinPredicates" : [
-							"a = a"
-						],
-						"leftEmbeddingField" : "none",
-						"rightEmbeddingField" : "x",
-						"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-					},
-					{
-						"inputStage" : {
-							"indexName" : "b_1",
-							"isMultiKey" : false,
-							"isPartial" : false,
-							"isSparse" : false,
-							"isUnique" : false,
-							"keyPattern" : {
-								"b" : 1
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "INDEX_PROBE_NODE"
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "FETCH"
-					}
-				],
-				"joinPredicates" : [
-					"b = b"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "y",
-				"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign3",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"x.c = c"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 9,
-		"rightEmbeddingField" : "z",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
+usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [x.c = c]
+leftEmbeddingField: "none"
+rightEmbeddingField: "z"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  INDEXED_NESTED_LOOP_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "y"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign2]
+  |  
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign2]
+  |  keyPattern: {  "b" : 1 }
+  |  indexName: "b_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  INDEXED_NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign1]
+  |  
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign1]
+  |  keyPattern: {  "a" : 1 }
+  |  indexName: "a_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ## 9. Basic example with 3 joins & subsequent join referencing nested paths
 ### No join opt
 ### Pipeline
@@ -9874,1053 +2974,262 @@ Execution Engine: classic
 ```
 
 ### With bottom-up plan enumeration (left-deep)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "w.y",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$w.y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "k.y.z",
-			"localField" : "w.y.d",
-			"foreignField" : "d"
-		}
-	},
-	{
-		"$unwind" : "$k.y.z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "k" : {  "y" : {  "z" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } } },  "w" : {  "y" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } },  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "9226A4FAA10C8790B27D9B5B865D46D0C58179A837F014E6289A34A6EBE76420",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"a = a"
-						],
-						"leftEmbeddingField" : "none",
-						"rightEmbeddingField" : "x",
-						"stage" : "HASH_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign3",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"x.c = c"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "w.y",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"w.y.d = d"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "k.y.z",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [w.y.d = d]
+leftEmbeddingField: "none"
+rightEmbeddingField: "k.y.z"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [x.c = c]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "w.y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (right-deep)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "w.y",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$w.y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "k.y.z",
-			"localField" : "w.y.d",
-			"foreignField" : "d"
-		}
-	},
-	{
-		"$unwind" : "$k.y.z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "k" : {  "y" : {  "z" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } } },  "w" : {  "y" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } },  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "9226A4FAA10C8790B27D9B5B865D46D0C58179A837F014E6289A34A6EBE76420",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			},
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign3",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"a = a"
-						],
-						"leftEmbeddingField" : "none",
-						"rightEmbeddingField" : "x",
-						"stage" : "HASH_JOIN_EMBEDDING"
-					}
-				],
-				"joinPredicates" : [
-					"c = x.c"
-				],
-				"leftEmbeddingField" : "w.y",
-				"rightEmbeddingField" : "none",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			}
-		],
-		"joinPredicates" : [
-			"d = w.y.d"
-		],
-		"leftEmbeddingField" : "k.y.z",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "none",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [d = w.y.d]
+leftEmbeddingField: "k.y.z"
+rightEmbeddingField: "none"
+  |  |
+  |  HASH_JOIN_EMBEDDING [c = x.c]
+  |  leftEmbeddingField: "w.y"
+  |  rightEmbeddingField: "none"
+  |  |  |
+  |  |  HASH_JOIN_EMBEDDING [a = a]
+  |  |  leftEmbeddingField: "none"
+  |  |  rightEmbeddingField: "x"
+  |  |  |  |
+  |  |  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  |  |  direction: "forward"
+  |  |  |
+  |  |  COLLSCAN [test.basic_joins_md]
+  |  |  direction: "forward"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (zig-zag)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "w.y",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$w.y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "k.y.z",
-			"localField" : "w.y.d",
-			"foreignField" : "d"
-		}
-	},
-	{
-		"$unwind" : "$k.y.z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "k" : {  "y" : {  "z" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } } },  "w" : {  "y" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } },  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "9226A4FAA10C8790B27D9B5B865D46D0C58179A837F014E6289A34A6EBE76420",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			},
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"a = a"
-						],
-						"leftEmbeddingField" : "none",
-						"rightEmbeddingField" : "x",
-						"stage" : "HASH_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign3",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"x.c = c"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "w.y",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			}
-		],
-		"joinPredicates" : [
-			"d = w.y.d"
-		],
-		"leftEmbeddingField" : "k.y.z",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "none",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [d = w.y.d]
+leftEmbeddingField: "k.y.z"
+rightEmbeddingField: "none"
+  |  |
+  |  HASH_JOIN_EMBEDDING [x.c = c]
+  |  leftEmbeddingField: "none"
+  |  rightEmbeddingField: "w.y"
+  |  |  |
+  |  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  |  direction: "forward"
+  |  |
+  |  HASH_JOIN_EMBEDDING [a = a]
+  |  leftEmbeddingField: "none"
+  |  rightEmbeddingField: "x"
+  |  |  |
+  |  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  |  direction: "forward"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  direction: "forward"
+```
 ### With random order, seed 44, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "w.y",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$w.y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "k.y.z",
-			"localField" : "w.y.d",
-			"foreignField" : "d"
-		}
-	},
-	{
-		"$unwind" : "$k.y.z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "k" : {  "y" : {  "z" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } } },  "w" : {  "y" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } },  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "9226A4FAA10C8790B27D9B5B865D46D0C58179A837F014E6289A34A6EBE76420",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"a = a"
-						],
-						"leftEmbeddingField" : "none",
-						"rightEmbeddingField" : "x",
-						"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign3",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"x.c = c"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "w.y",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"w.y.d = d"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "k.y.z",
-		"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+NESTED_LOOP_JOIN_EMBEDDING [w.y.d = d]
+leftEmbeddingField: "none"
+rightEmbeddingField: "k.y.z"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [x.c = c]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "w.y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ### With random order, seed 44, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "w.y",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$w.y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "k.y.z",
-			"localField" : "w.y.d",
-			"foreignField" : "d"
-		}
-	},
-	{
-		"$unwind" : "$k.y.z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "k" : {  "y" : {  "z" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } } },  "w" : {  "y" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } },  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "9226A4FAA10C8790B27D9B5B865D46D0C58179A837F014E6289A34A6EBE76420",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"a = a"
-						],
-						"leftEmbeddingField" : "none",
-						"rightEmbeddingField" : "x",
-						"stage" : "HASH_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign3",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"x.c = c"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "w.y",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"w.y.d = d"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "k.y.z",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
-### With random order, seed 420, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "w.y",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$w.y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "k.y.z",
-			"localField" : "w.y.d",
-			"foreignField" : "d"
-		}
-	},
-	{
-		"$unwind" : "$k.y.z"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "k" : {  "y" : {  "z" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } } },  "w" : {  "y" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } },  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "9226A4FAA10C8790B27D9B5B865D46D0C58179A837F014E6289A34A6EBE76420",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign3",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"c = c"
-						],
-						"leftEmbeddingField" : "x",
-						"rightEmbeddingField" : "w.y",
-						"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"w.y.d = d"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "k.y.z",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"x.a = a"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "none",
-		"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
+HASH_JOIN_EMBEDDING [w.y.d = d]
+leftEmbeddingField: "none"
+rightEmbeddingField: "k.y.z"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [x.c = c]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "w.y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
 ```
+### With random order, seed 45, nested loop joins
 usedJoinOptimization: true
 
-### With random order, seed 420, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "w.y",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$w.y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "k.y.z",
-			"localField" : "w.y.d",
-			"foreignField" : "d"
-		}
-	},
-	{
-		"$unwind" : "$k.y.z"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "k" : {  "y" : {  "z" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } } },  "w" : {  "y" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } },  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "9226A4FAA10C8790B27D9B5B865D46D0C58179A837F014E6289A34A6EBE76420",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign3",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"c = c"
-						],
-						"leftEmbeddingField" : "x",
-						"rightEmbeddingField" : "w.y",
-						"stage" : "HASH_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"w.y.d = d"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "k.y.z",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"x.a = a"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "none",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
+HASH_JOIN_EMBEDDING [x.a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [w.y.c = c]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [d = d]
+  leftEmbeddingField: "k.y.z"
+  rightEmbeddingField: "w.y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  direction: "forward"
 ```
+### With random order, seed 45, hash join enabled
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [x.a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [w.y.c = c]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [d = d]
+  leftEmbeddingField: "k.y.z"
+  rightEmbeddingField: "w.y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  direction: "forward"
+```
 ### With fixed order, index join
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "w.y",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$w.y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "k.y.z",
-			"localField" : "w.y.d",
-			"foreignField" : "d"
-		}
-	},
-	{
-		"$unwind" : "$k.y.z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "k" : {  "y" : {  "z" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } } },  "w" : {  "y" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } },  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "9226A4FAA10C8790B27D9B5B865D46D0C58179A837F014E6289A34A6EBE76420",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign3",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"c = c"
-						],
-						"leftEmbeddingField" : "x",
-						"rightEmbeddingField" : "w.y",
-						"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"w.y.d = d"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "k.y.z",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"x.a = a"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "none",
-		"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+NESTED_LOOP_JOIN_EMBEDDING [x.a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [w.y.c = c]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [d = d]
+  leftEmbeddingField: "k.y.z"
+  rightEmbeddingField: "w.y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration and indexes
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "w.y",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$w.y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "k.y.z",
-			"localField" : "w.y.d",
-			"foreignField" : "d"
-		}
-	},
-	{
-		"$unwind" : "$k.y.z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "k" : {  "y" : {  "z" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } } },  "w" : {  "y" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } },  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "9226A4FAA10C8790B27D9B5B865D46D0C58179A837F014E6289A34A6EBE76420",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"inputStage" : {
-									"indexName" : "a_1",
-									"isMultiKey" : false,
-									"isPartial" : false,
-									"isSparse" : false,
-									"isUnique" : false,
-									"keyPattern" : {
-										"a" : 1
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "INDEX_PROBE_NODE"
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "FETCH"
-							}
-						],
-						"joinPredicates" : [
-							"a = a"
-						],
-						"leftEmbeddingField" : "none",
-						"rightEmbeddingField" : "x",
-						"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign3",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"x.c = c"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "w.y",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"w.y.d = d"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 8,
-		"rightEmbeddingField" : "k.y.z",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
+usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [w.y.d = d]
+leftEmbeddingField: "none"
+rightEmbeddingField: "k.y.z"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [x.c = c]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "w.y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  INDEXED_NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign1]
+  |  
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign1]
+  |  keyPattern: {  "a" : 1 }
+  |  indexName: "a_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
diff --git a/jstests/query_golden/expected_output/sbeFull/basic_joins.md b/jstests/query_golden/expected_output/sbeFull/basic_joins.md
index de58394db4c..3d1891c747d 100644
--- a/jstests/query_golden/expected_output/sbeFull/basic_joins.md
+++ b/jstests/query_golden/expected_output/sbeFull/basic_joins.md
@@ -73,856 +73,218 @@ Execution Engine: sbe
 ```
 
 ### With bottom-up plan enumeration (left-deep)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "2312073BEBB7A5E1754E2D03D9CB40B75C126DBF60867D4639E7E281C9E3DFAC",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "y",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (right-deep)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "2312073BEBB7A5E1754E2D03D9CB40B75C126DBF60867D4639E7E281C9E3DFAC",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			},
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "y",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "none",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "y"
+rightEmbeddingField: "none"
+  |  |
+  |  HASH_JOIN_EMBEDDING [a = a]
+  |  leftEmbeddingField: "none"
+  |  rightEmbeddingField: "x"
+  |  |  |
+  |  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  |  direction: "forward"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (zig-zag)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "2312073BEBB7A5E1754E2D03D9CB40B75C126DBF60867D4639E7E281C9E3DFAC",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "y",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ### With random order, seed 44, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "2312073BEBB7A5E1754E2D03D9CB40B75C126DBF60867D4639E7E281C9E3DFAC",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "x",
-				"rightEmbeddingField" : "none",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "y",
-		"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+NESTED_LOOP_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "x"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign1]
+  direction: "forward"
+```
 ### With random order, seed 44, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "2312073BEBB7A5E1754E2D03D9CB40B75C126DBF60867D4639E7E281C9E3DFAC",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "x",
-				"rightEmbeddingField" : "none",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "y",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
-### With random order, seed 420, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "2312073BEBB7A5E1754E2D03D9CB40B75C126DBF60867D4639E7E281C9E3DFAC",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"b = b"
-				],
-				"leftEmbeddingField" : "y",
-				"rightEmbeddingField" : "none",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign1",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"a = a"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "x",
-		"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "x"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign1]
+  direction: "forward"
 ```
+### With random order, seed 45, nested loop joins
 usedJoinOptimization: true
 
-### With random order, seed 420, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "2312073BEBB7A5E1754E2D03D9CB40B75C126DBF60867D4639E7E281C9E3DFAC",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"b = b"
-				],
-				"leftEmbeddingField" : "y",
-				"rightEmbeddingField" : "none",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign1",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"a = a"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "x",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
+HASH_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  direction: "forward"
 ```
+### With random order, seed 45, hash join enabled
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  direction: "forward"
+```
 ### With fixed order, index join
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "2312073BEBB7A5E1754E2D03D9CB40B75C126DBF60867D4639E7E281C9E3DFAC",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"b = b"
-				],
-				"leftEmbeddingField" : "y",
-				"rightEmbeddingField" : "none",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"inputStage" : {
-					"indexName" : "a_1",
-					"isMultiKey" : false,
-					"isPartial" : false,
-					"isSparse" : false,
-					"isUnique" : false,
-					"keyPattern" : {
-						"a" : 1
-					},
-					"nss" : "test.basic_joins_md_foreign1",
-					"stage" : "INDEX_PROBE_NODE"
-				},
-				"nss" : "test.basic_joins_md_foreign1",
-				"stage" : "FETCH"
-			}
-		],
-		"joinPredicates" : [
-			"a = a"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 6,
-		"rightEmbeddingField" : "x",
-		"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+INDEXED_NESTED_LOOP_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign1]
+  |  
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign1]
+  |  keyPattern: {  "a" : 1 }
+  |  indexName: "a_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration and indexes
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "2312073BEBB7A5E1754E2D03D9CB40B75C126DBF60867D4639E7E281C9E3DFAC",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"inputStage" : {
-							"indexName" : "a_1",
-							"isMultiKey" : false,
-							"isPartial" : false,
-							"isSparse" : false,
-							"isUnique" : false,
-							"keyPattern" : {
-								"a" : 1
-							},
-							"nss" : "test.basic_joins_md_foreign1",
-							"stage" : "INDEX_PROBE_NODE"
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "FETCH"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"inputStage" : {
-					"indexName" : "b_1",
-					"isMultiKey" : false,
-					"isPartial" : false,
-					"isSparse" : false,
-					"isUnique" : false,
-					"keyPattern" : {
-						"b" : 1
-					},
-					"nss" : "test.basic_joins_md_foreign2",
-					"stage" : "INDEX_PROBE_NODE"
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "FETCH"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "y",
-		"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
-```
+usedJoinOptimization: true
 
+```
+INDEXED_NESTED_LOOP_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign2]
+  |  
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign2]
+  |  keyPattern: {  "b" : 1 }
+  |  indexName: "b_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  INDEXED_NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign1]
+  |  
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign1]
+  |  keyPattern: {  "a" : 1 }
+  |  indexName: "a_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ## 2. Basic example with two joins and suffix
 ### No join opt
 ### Pipeline
@@ -1015,1126 +377,245 @@ Execution Engine: sbe
 ```
 
 ### With bottom-up plan enumeration (left-deep)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$y.b"
-	}
-]
-```
-### Results
-```json
-{  "_id" : "bar",  "count" : 6 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "8E0DF14D3DA69D8B1CF0361E869369F9C5E5F2F2A5D81998E6800BDA4F997B57",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								},
-								{
-									"direction" : "forward",
-									"filter" : {
-										
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "COLLSCAN"
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "none",
-							"rightEmbeddingField" : "x",
-							"stage" : "HASH_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "y",
-					"stage" : "HASH_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$y.b",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  PROJECTION_SIMPLE
+  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (right-deep)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$y.b"
-	}
-]
-```
-### Results
-```json
-{  "_id" : "bar",  "count" : 6 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "8E0DF14D3DA69D8B1CF0361E869369F9C5E5F2F2A5D81998E6800BDA4F997B57",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"direction" : "forward",
-							"filter" : {
-								
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "COLLSCAN"
-						},
-						{
-							"inputStages" : [
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								},
-								{
-									"direction" : "forward",
-									"filter" : {
-										
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "COLLSCAN"
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "none",
-							"rightEmbeddingField" : "x",
-							"stage" : "HASH_JOIN_EMBEDDING"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "y",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "none",
-					"stage" : "HASH_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$y.b",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "y"
+rightEmbeddingField: "none"
+  |  |
+  |  HASH_JOIN_EMBEDDING [a = a]
+  |  leftEmbeddingField: "none"
+  |  rightEmbeddingField: "x"
+  |  |  |
+  |  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  |  direction: "forward"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (zig-zag)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$y.b"
-	}
-]
-```
-### Results
-```json
-{  "_id" : "bar",  "count" : 6 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "8E0DF14D3DA69D8B1CF0361E869369F9C5E5F2F2A5D81998E6800BDA4F997B57",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								},
-								{
-									"direction" : "forward",
-									"filter" : {
-										
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "COLLSCAN"
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "none",
-							"rightEmbeddingField" : "x",
-							"stage" : "HASH_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "y",
-					"stage" : "HASH_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$y.b",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  PROJECTION_SIMPLE
+  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ### With random order, seed 44, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$y.b"
-	}
-]
-```
-### Results
-```json
-{  "_id" : "bar",  "count" : 6 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "8E0DF14D3DA69D8B1CF0361E869369F9C5E5F2F2A5D81998E6800BDA4F997B57",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"direction" : "forward",
-									"filter" : {
-										
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "COLLSCAN"
-								},
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "x",
-							"rightEmbeddingField" : "none",
-							"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "y",
-					"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$y.b",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
+```
+NESTED_LOOP_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "x"
+  rightEmbeddingField: "none"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign1]
+  direction: "forward"
+```
 ### With random order, seed 44, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$y.b"
-	}
-]
-```
-### Results
-```json
-{  "_id" : "bar",  "count" : 6 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "8E0DF14D3DA69D8B1CF0361E869369F9C5E5F2F2A5D81998E6800BDA4F997B57",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"direction" : "forward",
-									"filter" : {
-										
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "COLLSCAN"
-								},
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "x",
-							"rightEmbeddingField" : "none",
-							"stage" : "HASH_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "y",
-					"stage" : "HASH_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$y.b",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
-### With random order, seed 420, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$y.b"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : "bar",  "count" : 6 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "8E0DF14D3DA69D8B1CF0361E869369F9C5E5F2F2A5D81998E6800BDA4F997B57",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"direction" : "forward",
-									"filter" : {
-										
-									},
-									"nss" : "test.basic_joins_md_foreign2",
-									"stage" : "COLLSCAN"
-								},
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								}
-							],
-							"joinPredicates" : [
-								"b = b"
-							],
-							"leftEmbeddingField" : "y",
-							"rightEmbeddingField" : "none",
-							"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								
-							},
-							"nss" : "test.basic_joins_md_foreign1",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"a = a"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "x",
-					"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$y.b",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "x"
+  rightEmbeddingField: "none"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign1]
+  direction: "forward"
 ```
+### With random order, seed 45, nested loop joins
 usedJoinOptimization: true
 
-### With random order, seed 420, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$y.b"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : "bar",  "count" : 6 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "8E0DF14D3DA69D8B1CF0361E869369F9C5E5F2F2A5D81998E6800BDA4F997B57",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"direction" : "forward",
-									"filter" : {
-										
-									},
-									"nss" : "test.basic_joins_md_foreign2",
-									"stage" : "COLLSCAN"
-								},
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								}
-							],
-							"joinPredicates" : [
-								"b = b"
-							],
-							"leftEmbeddingField" : "y",
-							"rightEmbeddingField" : "none",
-							"stage" : "HASH_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								
-							},
-							"nss" : "test.basic_joins_md_foreign1",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"a = a"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "x",
-					"stage" : "HASH_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$y.b",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
+HASH_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  direction: "forward"
 ```
+### With random order, seed 45, hash join enabled
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  direction: "forward"
+```
 ### With fixed order, index join
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$y.b"
-	}
-]
-```
-### Results
-```json
-{  "_id" : "bar",  "count" : 6 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "8E0DF14D3DA69D8B1CF0361E869369F9C5E5F2F2A5D81998E6800BDA4F997B57",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"direction" : "forward",
-									"filter" : {
-										
-									},
-									"nss" : "test.basic_joins_md_foreign2",
-									"stage" : "COLLSCAN"
-								},
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								}
-							],
-							"joinPredicates" : [
-								"b = b"
-							],
-							"leftEmbeddingField" : "y",
-							"rightEmbeddingField" : "none",
-							"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-						},
-						{
-							"inputStage" : {
-								"indexName" : "a_1",
-								"isMultiKey" : false,
-								"isPartial" : false,
-								"isSparse" : false,
-								"isUnique" : false,
-								"keyPattern" : {
-									"a" : 1
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "INDEX_PROBE_NODE"
-							},
-							"nss" : "test.basic_joins_md_foreign1",
-							"stage" : "FETCH"
-						}
-					],
-					"joinPredicates" : [
-						"a = a"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 7,
-					"rightEmbeddingField" : "x",
-					"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$y.b",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
+```
+INDEXED_NESTED_LOOP_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign1]
+  |  
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign1]
+  |  keyPattern: {  "a" : 1 }
+  |  indexName: "a_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration and indexes
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$y.b"
-	}
-]
-```
-### Results
-```json
-{  "_id" : "bar",  "count" : 6 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "8E0DF14D3DA69D8B1CF0361E869369F9C5E5F2F2A5D81998E6800BDA4F997B57",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								},
-								{
-									"inputStage" : {
-										"indexName" : "a_1",
-										"isMultiKey" : false,
-										"isPartial" : false,
-										"isSparse" : false,
-										"isUnique" : false,
-										"keyPattern" : {
-											"a" : 1
-										},
-										"nss" : "test.basic_joins_md_foreign1",
-										"stage" : "INDEX_PROBE_NODE"
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "FETCH"
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "none",
-							"rightEmbeddingField" : "x",
-							"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-						},
-						{
-							"inputStage" : {
-								"indexName" : "b_1",
-								"isMultiKey" : false,
-								"isPartial" : false,
-								"isSparse" : false,
-								"isUnique" : false,
-								"keyPattern" : {
-									"b" : 1
-								},
-								"nss" : "test.basic_joins_md_foreign2",
-								"stage" : "INDEX_PROBE_NODE"
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "FETCH"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 8,
-					"rightEmbeddingField" : "y",
-					"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$y.b",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
+usedJoinOptimization: true
 
+```
+INDEXED_NESTED_LOOP_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign2]
+  |  
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign2]
+  |  keyPattern: {  "b" : 1 }
+  |  indexName: "b_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  INDEXED_NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign1]
+  |  
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign1]
+  |  keyPattern: {  "a" : 1 }
+  |  indexName: "a_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  PROJECTION_SIMPLE
+  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ## 3. Example with two joins, suffix, and sub-pipeline with un-correlated $match
 ### No join opt
 ### Pipeline
@@ -2287,1357 +768,270 @@ Execution Engine: sbe
 ```
 
 ### With bottom-up plan enumeration (left-deep)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$x.a"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "count" : 2 }
-{  "_id" : 2,  "count" : 2 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "39062D46AC66A096B98DB7B9AD3C198F432183DF3436553F59C3EC8B5252F1EA",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								},
-								{
-									"direction" : "forward",
-									"filter" : {
-										"d" : {
-											"$lt" : 3
-										}
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "COLLSCAN"
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "none",
-							"rightEmbeddingField" : "x",
-							"stage" : "HASH_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								"b" : {
-									"$gt" : "aaa"
-								}
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "y",
-					"stage" : "HASH_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$x.a",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  direction: "forward"
+  |
+  PROJECTION_SIMPLE
+  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (right-deep)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$x.a"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "count" : 2 }
-{  "_id" : 2,  "count" : 2 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "39062D46AC66A096B98DB7B9AD3C198F432183DF3436553F59C3EC8B5252F1EA",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"direction" : "forward",
-							"filter" : {
-								"b" : {
-									"$gt" : "aaa"
-								}
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "COLLSCAN"
-						},
-						{
-							"inputStages" : [
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								},
-								{
-									"direction" : "forward",
-									"filter" : {
-										"d" : {
-											"$lt" : 3
-										}
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "COLLSCAN"
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "none",
-							"rightEmbeddingField" : "x",
-							"stage" : "HASH_JOIN_EMBEDDING"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "y",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "none",
-					"stage" : "HASH_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$x.a",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "y"
+rightEmbeddingField: "none"
+  |  |
+  |  HASH_JOIN_EMBEDDING [a = a]
+  |  leftEmbeddingField: "none"
+  |  rightEmbeddingField: "x"
+  |  |  |
+  |  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  |  direction: "forward"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  filter: {  "b" : {  "$gt" : "aaa" } }
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (zig-zag)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$x.a"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "count" : 2 }
-{  "_id" : 2,  "count" : 2 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "39062D46AC66A096B98DB7B9AD3C198F432183DF3436553F59C3EC8B5252F1EA",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								},
-								{
-									"direction" : "forward",
-									"filter" : {
-										"d" : {
-											"$lt" : 3
-										}
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "COLLSCAN"
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "none",
-							"rightEmbeddingField" : "x",
-							"stage" : "HASH_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								"b" : {
-									"$gt" : "aaa"
-								}
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "y",
-					"stage" : "HASH_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$x.a",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  direction: "forward"
+  |
+  PROJECTION_SIMPLE
+  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ### With random order, seed 44, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$x.a"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "count" : 2 }
-{  "_id" : 2,  "count" : 2 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "39062D46AC66A096B98DB7B9AD3C198F432183DF3436553F59C3EC8B5252F1EA",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"direction" : "forward",
-									"filter" : {
-										"d" : {
-											"$lt" : 3
-										}
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "COLLSCAN"
-								},
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "x",
-							"rightEmbeddingField" : "none",
-							"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								"b" : {
-									"$gt" : "aaa"
-								}
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "y",
-					"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$x.a",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
+```
+NESTED_LOOP_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "x"
+  rightEmbeddingField: "none"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign1]
+  filter: {  "d" : {  "$lt" : 3 } }
+  direction: "forward"
+```
 ### With random order, seed 44, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$x.a"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "count" : 2 }
-{  "_id" : 2,  "count" : 2 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "39062D46AC66A096B98DB7B9AD3C198F432183DF3436553F59C3EC8B5252F1EA",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"direction" : "forward",
-									"filter" : {
-										"d" : {
-											"$lt" : 3
-										}
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "COLLSCAN"
-								},
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "x",
-							"rightEmbeddingField" : "none",
-							"stage" : "HASH_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								"b" : {
-									"$gt" : "aaa"
-								}
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "y",
-					"stage" : "HASH_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$x.a",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
-### With random order, seed 420, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$x.a"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 1,  "count" : 2 }
-{  "_id" : 2,  "count" : 2 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "39062D46AC66A096B98DB7B9AD3C198F432183DF3436553F59C3EC8B5252F1EA",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"direction" : "forward",
-									"filter" : {
-										"b" : {
-											"$gt" : "aaa"
-										}
-									},
-									"nss" : "test.basic_joins_md_foreign2",
-									"stage" : "COLLSCAN"
-								},
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								}
-							],
-							"joinPredicates" : [
-								"b = b"
-							],
-							"leftEmbeddingField" : "y",
-							"rightEmbeddingField" : "none",
-							"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								"d" : {
-									"$lt" : 3
-								}
-							},
-							"nss" : "test.basic_joins_md_foreign1",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"a = a"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "x",
-					"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$x.a",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "x"
+  rightEmbeddingField: "none"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign1]
+  filter: {  "d" : {  "$lt" : 3 } }
+  direction: "forward"
 ```
+### With random order, seed 45, nested loop joins
 usedJoinOptimization: true
 
-### With random order, seed 420, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$x.a"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 1,  "count" : 2 }
-{  "_id" : 2,  "count" : 2 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "39062D46AC66A096B98DB7B9AD3C198F432183DF3436553F59C3EC8B5252F1EA",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"direction" : "forward",
-									"filter" : {
-										"b" : {
-											"$gt" : "aaa"
-										}
-									},
-									"nss" : "test.basic_joins_md_foreign2",
-									"stage" : "COLLSCAN"
-								},
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								}
-							],
-							"joinPredicates" : [
-								"b = b"
-							],
-							"leftEmbeddingField" : "y",
-							"rightEmbeddingField" : "none",
-							"stage" : "HASH_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								"d" : {
-									"$lt" : 3
-								}
-							},
-							"nss" : "test.basic_joins_md_foreign1",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"a = a"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "x",
-					"stage" : "HASH_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$x.a",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
+HASH_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  filter: {  "b" : {  "$gt" : "aaa" } }
+  direction: "forward"
 ```
+### With random order, seed 45, hash join enabled
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  filter: {  "b" : {  "$gt" : "aaa" } }
+  direction: "forward"
+```
 ### With fixed order, index join
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$x.a"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "count" : 2 }
-{  "_id" : 2,  "count" : 2 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "39062D46AC66A096B98DB7B9AD3C198F432183DF3436553F59C3EC8B5252F1EA",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"indexBounds" : {
-											"b" : [
-												"(\"aaa\", {})"
-											]
-										},
-										"indexName" : "b_1",
-										"isMultiKey" : false,
-										"isPartial" : false,
-										"isSparse" : false,
-										"isUnique" : false,
-										"keyPattern" : {
-											"b" : 1
-										},
-										"multiKeyPaths" : {
-											"b" : [ ]
-										},
-										"nss" : "test.basic_joins_md_foreign2",
-										"stage" : "IXSCAN"
-									},
-									"nss" : "test.basic_joins_md_foreign2",
-									"stage" : "FETCH"
-								},
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								}
-							],
-							"joinPredicates" : [
-								"b = b"
-							],
-							"leftEmbeddingField" : "y",
-							"rightEmbeddingField" : "none",
-							"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-						},
-						{
-							"filter" : {
-								"d" : {
-									"$lt" : 3
-								}
-							},
-							"inputStage" : {
-								"indexName" : "a_1",
-								"isMultiKey" : false,
-								"isPartial" : false,
-								"isSparse" : false,
-								"isUnique" : false,
-								"keyPattern" : {
-									"a" : 1
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "INDEX_PROBE_NODE"
-							},
-							"nss" : "test.basic_joins_md_foreign1",
-							"stage" : "FETCH"
-						}
-					],
-					"joinPredicates" : [
-						"a = a"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 8,
-					"rightEmbeddingField" : "x",
-					"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$x.a",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
+```
+INDEXED_NESTED_LOOP_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign1]
+  |  keyPattern: {  "a" : 1 }
+  |  indexName: "a_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  FETCH [test.basic_joins_md_foreign2]
+  
+  |
+  IXSCAN [test.basic_joins_md_foreign2]
+  keyPattern: {  "b" : 1 }
+  indexName: "b_1"
+  isMultiKey: false
+  multiKeyPaths: {  "b" : [ ] }
+  isUnique: false
+  isSparse: false
+  isPartial: false
+  direction: "forward"
+  indexBounds: {  "b" : [ "(\"aaa\", {})" ] }
+```
 ### With bottom-up plan enumeration and indexes
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$x.a"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "count" : 2 }
-{  "_id" : 2,  "count" : 2 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "39062D46AC66A096B98DB7B9AD3C198F432183DF3436553F59C3EC8B5252F1EA",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								},
-								{
-									"filter" : {
-										"d" : {
-											"$lt" : 3
-										}
-									},
-									"inputStage" : {
-										"indexName" : "a_1",
-										"isMultiKey" : false,
-										"isPartial" : false,
-										"isSparse" : false,
-										"isUnique" : false,
-										"keyPattern" : {
-											"a" : 1
-										},
-										"nss" : "test.basic_joins_md_foreign1",
-										"stage" : "INDEX_PROBE_NODE"
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "FETCH"
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "none",
-							"rightEmbeddingField" : "x",
-							"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-						},
-						{
-							"filter" : {
-								"b" : {
-									"$gt" : "aaa"
-								}
-							},
-							"inputStage" : {
-								"indexName" : "b_1",
-								"isMultiKey" : false,
-								"isPartial" : false,
-								"isSparse" : false,
-								"isUnique" : false,
-								"keyPattern" : {
-									"b" : 1
-								},
-								"nss" : "test.basic_joins_md_foreign2",
-								"stage" : "INDEX_PROBE_NODE"
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "FETCH"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 8,
-					"rightEmbeddingField" : "y",
-					"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$x.a",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
+usedJoinOptimization: true
 
+```
+INDEXED_NESTED_LOOP_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign2]
+  |  keyPattern: {  "b" : 1 }
+  |  indexName: "b_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  INDEXED_NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign1]
+  |  keyPattern: {  "a" : 1 }
+  |  indexName: "a_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  PROJECTION_SIMPLE
+  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ## 4. Example with two joins and sub-pipeline with un-correlated $match
 ### No join opt
 ### Pipeline
@@ -3763,1060 +1157,243 @@ Execution Engine: sbe
 ```
 
 ### With bottom-up plan enumeration (left-deep)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "6E1AD01BB023E5575DBF8997EA4E7E46A5BCCAA49D659AFD0AB18E0D1E797FF4",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							"d" : {
-								"$lt" : 3
-							}
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					"b" : {
-						"$gt" : "aaa"
-					}
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "y",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (right-deep)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "6E1AD01BB023E5575DBF8997EA4E7E46A5BCCAA49D659AFD0AB18E0D1E797FF4",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"direction" : "forward",
-				"filter" : {
-					"b" : {
-						"$gt" : "aaa"
-					}
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			},
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							"d" : {
-								"$lt" : 3
-							}
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "y",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "none",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "y"
+rightEmbeddingField: "none"
+  |  |
+  |  HASH_JOIN_EMBEDDING [a = a]
+  |  leftEmbeddingField: "none"
+  |  rightEmbeddingField: "x"
+  |  |  |
+  |  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  |  direction: "forward"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  filter: {  "b" : {  "$gt" : "aaa" } }
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (zig-zag)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "6E1AD01BB023E5575DBF8997EA4E7E46A5BCCAA49D659AFD0AB18E0D1E797FF4",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							"d" : {
-								"$lt" : 3
-							}
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					"b" : {
-						"$gt" : "aaa"
-					}
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "y",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ### With random order, seed 44, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "6E1AD01BB023E5575DBF8997EA4E7E46A5BCCAA49D659AFD0AB18E0D1E797FF4",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							"d" : {
-								"$lt" : 3
-							}
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "x",
-				"rightEmbeddingField" : "none",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					"b" : {
-						"$gt" : "aaa"
-					}
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "y",
-		"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+NESTED_LOOP_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "x"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign1]
+  filter: {  "d" : {  "$lt" : 3 } }
+  direction: "forward"
+```
 ### With random order, seed 44, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "6E1AD01BB023E5575DBF8997EA4E7E46A5BCCAA49D659AFD0AB18E0D1E797FF4",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							"d" : {
-								"$lt" : 3
-							}
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "x",
-				"rightEmbeddingField" : "none",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					"b" : {
-						"$gt" : "aaa"
-					}
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "y",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
-### With random order, seed 420, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "6E1AD01BB023E5575DBF8997EA4E7E46A5BCCAA49D659AFD0AB18E0D1E797FF4",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							"b" : {
-								"$gt" : "aaa"
-							}
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"b = b"
-				],
-				"leftEmbeddingField" : "y",
-				"rightEmbeddingField" : "none",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					"d" : {
-						"$lt" : 3
-					}
-				},
-				"nss" : "test.basic_joins_md_foreign1",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"a = a"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "x",
-		"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "x"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign1]
+  filter: {  "d" : {  "$lt" : 3 } }
+  direction: "forward"
 ```
+### With random order, seed 45, nested loop joins
 usedJoinOptimization: true
 
-### With random order, seed 420, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "6E1AD01BB023E5575DBF8997EA4E7E46A5BCCAA49D659AFD0AB18E0D1E797FF4",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							"b" : {
-								"$gt" : "aaa"
-							}
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"b = b"
-				],
-				"leftEmbeddingField" : "y",
-				"rightEmbeddingField" : "none",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					"d" : {
-						"$lt" : 3
-					}
-				},
-				"nss" : "test.basic_joins_md_foreign1",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"a = a"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "x",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
+HASH_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  filter: {  "b" : {  "$gt" : "aaa" } }
+  direction: "forward"
 ```
+### With random order, seed 45, hash join enabled
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  filter: {  "b" : {  "$gt" : "aaa" } }
+  direction: "forward"
+```
 ### With fixed order, index join
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "6E1AD01BB023E5575DBF8997EA4E7E46A5BCCAA49D659AFD0AB18E0D1E797FF4",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStage" : {
-							"direction" : "forward",
-							"indexBounds" : {
-								"b" : [
-									"(\"aaa\", {})"
-								]
-							},
-							"indexName" : "b_1",
-							"isMultiKey" : false,
-							"isPartial" : false,
-							"isSparse" : false,
-							"isUnique" : false,
-							"keyPattern" : {
-								"b" : 1
-							},
-							"multiKeyPaths" : {
-								"b" : [ ]
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "IXSCAN"
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "FETCH"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"b = b"
-				],
-				"leftEmbeddingField" : "y",
-				"rightEmbeddingField" : "none",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"filter" : {
-					"d" : {
-						"$lt" : 3
-					}
-				},
-				"inputStage" : {
-					"indexName" : "a_1",
-					"isMultiKey" : false,
-					"isPartial" : false,
-					"isSparse" : false,
-					"isUnique" : false,
-					"keyPattern" : {
-						"a" : 1
-					},
-					"nss" : "test.basic_joins_md_foreign1",
-					"stage" : "INDEX_PROBE_NODE"
-				},
-				"nss" : "test.basic_joins_md_foreign1",
-				"stage" : "FETCH"
-			}
-		],
-		"joinPredicates" : [
-			"a = a"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "x",
-		"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+INDEXED_NESTED_LOOP_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign1]
+  |  keyPattern: {  "a" : 1 }
+  |  indexName: "a_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  FETCH [test.basic_joins_md_foreign2]
+  
+  |
+  IXSCAN [test.basic_joins_md_foreign2]
+  keyPattern: {  "b" : 1 }
+  indexName: "b_1"
+  isMultiKey: false
+  multiKeyPaths: {  "b" : [ ] }
+  isUnique: false
+  isSparse: false
+  isPartial: false
+  direction: "forward"
+  indexBounds: {  "b" : [ "(\"aaa\", {})" ] }
+```
 ### With bottom-up plan enumeration and indexes
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "6E1AD01BB023E5575DBF8997EA4E7E46A5BCCAA49D659AFD0AB18E0D1E797FF4",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"filter" : {
-							"d" : {
-								"$lt" : 3
-							}
-						},
-						"inputStage" : {
-							"indexName" : "a_1",
-							"isMultiKey" : false,
-							"isPartial" : false,
-							"isSparse" : false,
-							"isUnique" : false,
-							"keyPattern" : {
-								"a" : 1
-							},
-							"nss" : "test.basic_joins_md_foreign1",
-							"stage" : "INDEX_PROBE_NODE"
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "FETCH"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"filter" : {
-					"b" : {
-						"$gt" : "aaa"
-					}
-				},
-				"inputStage" : {
-					"indexName" : "b_1",
-					"isMultiKey" : false,
-					"isPartial" : false,
-					"isSparse" : false,
-					"isUnique" : false,
-					"keyPattern" : {
-						"b" : 1
-					},
-					"nss" : "test.basic_joins_md_foreign2",
-					"stage" : "INDEX_PROBE_NODE"
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "FETCH"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "y",
-		"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
-```
+usedJoinOptimization: true
 
+```
+INDEXED_NESTED_LOOP_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign2]
+  |  keyPattern: {  "b" : 1 }
+  |  indexName: "b_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  INDEXED_NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign1]
+  |  keyPattern: {  "a" : 1 }
+  |  indexName: "a_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ## 5. Example with two joins, suffix, and sub-pipeline with un-correlated $match and $match prefix
 ### No join opt
 ### Pipeline
@@ -4977,1429 +1554,279 @@ Execution Engine: sbe
 ```
 
 ### With bottom-up plan enumeration (left-deep)
-### Pipeline
-```json
-[
-	{
-		"$match" : {
-			"a" : {
-				"$gt" : 1
-			}
-		}
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$x.a"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "count" : 2 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "7D59BE511C0D33652DB26A61DFFA0D36F47580971FB97DF9C3C4BC3A3F52F932",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											"a" : {
-												"$gt" : 1
-											}
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								},
-								{
-									"direction" : "forward",
-									"filter" : {
-										"d" : {
-											"$lt" : 3
-										}
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "COLLSCAN"
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "none",
-							"rightEmbeddingField" : "x",
-							"stage" : "HASH_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								"b" : {
-									"$gt" : "aaa"
-								}
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "y",
-					"stage" : "HASH_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$x.a",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  direction: "forward"
+  |
+  PROJECTION_SIMPLE
+  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |
+  COLLSCAN [test.basic_joins_md]
+  filter: {  "a" : {  "$gt" : 1 } }
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (right-deep)
-### Pipeline
-```json
-[
-	{
-		"$match" : {
-			"a" : {
-				"$gt" : 1
-			}
-		}
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$x.a"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "count" : 2 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "7D59BE511C0D33652DB26A61DFFA0D36F47580971FB97DF9C3C4BC3A3F52F932",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"direction" : "forward",
-							"filter" : {
-								"b" : {
-									"$gt" : "aaa"
-								}
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "COLLSCAN"
-						},
-						{
-							"inputStages" : [
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											"a" : {
-												"$gt" : 1
-											}
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								},
-								{
-									"direction" : "forward",
-									"filter" : {
-										"d" : {
-											"$lt" : 3
-										}
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "COLLSCAN"
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "none",
-							"rightEmbeddingField" : "x",
-							"stage" : "HASH_JOIN_EMBEDDING"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "y",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "none",
-					"stage" : "HASH_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$x.a",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "y"
+rightEmbeddingField: "none"
+  |  |
+  |  HASH_JOIN_EMBEDDING [a = a]
+  |  leftEmbeddingField: "none"
+  |  rightEmbeddingField: "x"
+  |  |  |
+  |  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  |  direction: "forward"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  filter: {  "a" : {  "$gt" : 1 } }
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  filter: {  "b" : {  "$gt" : "aaa" } }
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (zig-zag)
-### Pipeline
-```json
-[
-	{
-		"$match" : {
-			"a" : {
-				"$gt" : 1
-			}
-		}
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$x.a"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "count" : 2 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "7D59BE511C0D33652DB26A61DFFA0D36F47580971FB97DF9C3C4BC3A3F52F932",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											"a" : {
-												"$gt" : 1
-											}
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								},
-								{
-									"direction" : "forward",
-									"filter" : {
-										"d" : {
-											"$lt" : 3
-										}
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "COLLSCAN"
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "none",
-							"rightEmbeddingField" : "x",
-							"stage" : "HASH_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								"b" : {
-									"$gt" : "aaa"
-								}
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "y",
-					"stage" : "HASH_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$x.a",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  direction: "forward"
+  |
+  PROJECTION_SIMPLE
+  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |
+  COLLSCAN [test.basic_joins_md]
+  filter: {  "a" : {  "$gt" : 1 } }
+  direction: "forward"
+```
 ### With random order, seed 44, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$match" : {
-			"a" : {
-				"$gt" : 1
-			}
-		}
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$x.a"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "count" : 2 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "7D59BE511C0D33652DB26A61DFFA0D36F47580971FB97DF9C3C4BC3A3F52F932",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"direction" : "forward",
-									"filter" : {
-										"d" : {
-											"$lt" : 3
-										}
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "COLLSCAN"
-								},
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											"a" : {
-												"$gt" : 1
-											}
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "x",
-							"rightEmbeddingField" : "none",
-							"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								"b" : {
-									"$gt" : "aaa"
-								}
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "y",
-					"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$x.a",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
+```
+NESTED_LOOP_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "x"
+  rightEmbeddingField: "none"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  filter: {  "a" : {  "$gt" : 1 } }
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign1]
+  filter: {  "d" : {  "$lt" : 3 } }
+  direction: "forward"
+```
 ### With random order, seed 44, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$match" : {
-			"a" : {
-				"$gt" : 1
-			}
-		}
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$x.a"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "count" : 2 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "7D59BE511C0D33652DB26A61DFFA0D36F47580971FB97DF9C3C4BC3A3F52F932",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"direction" : "forward",
-									"filter" : {
-										"d" : {
-											"$lt" : 3
-										}
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "COLLSCAN"
-								},
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											"a" : {
-												"$gt" : 1
-											}
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "x",
-							"rightEmbeddingField" : "none",
-							"stage" : "HASH_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								"b" : {
-									"$gt" : "aaa"
-								}
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "y",
-					"stage" : "HASH_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$x.a",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
-### With random order, seed 420, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$match" : {
-			"a" : {
-				"$gt" : 1
-			}
-		}
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$x.a"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 2,  "count" : 2 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "7D59BE511C0D33652DB26A61DFFA0D36F47580971FB97DF9C3C4BC3A3F52F932",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"direction" : "forward",
-									"filter" : {
-										"b" : {
-											"$gt" : "aaa"
-										}
-									},
-									"nss" : "test.basic_joins_md_foreign2",
-									"stage" : "COLLSCAN"
-								},
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											"a" : {
-												"$gt" : 1
-											}
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								}
-							],
-							"joinPredicates" : [
-								"b = b"
-							],
-							"leftEmbeddingField" : "y",
-							"rightEmbeddingField" : "none",
-							"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								"d" : {
-									"$lt" : 3
-								}
-							},
-							"nss" : "test.basic_joins_md_foreign1",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"a = a"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "x",
-					"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$x.a",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "x"
+  rightEmbeddingField: "none"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  filter: {  "a" : {  "$gt" : 1 } }
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign1]
+  filter: {  "d" : {  "$lt" : 3 } }
+  direction: "forward"
 ```
+### With random order, seed 45, nested loop joins
 usedJoinOptimization: true
 
-### With random order, seed 420, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$match" : {
-			"a" : {
-				"$gt" : 1
-			}
-		}
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$x.a"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 2,  "count" : 2 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "7D59BE511C0D33652DB26A61DFFA0D36F47580971FB97DF9C3C4BC3A3F52F932",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"direction" : "forward",
-									"filter" : {
-										"b" : {
-											"$gt" : "aaa"
-										}
-									},
-									"nss" : "test.basic_joins_md_foreign2",
-									"stage" : "COLLSCAN"
-								},
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											"a" : {
-												"$gt" : 1
-											}
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								}
-							],
-							"joinPredicates" : [
-								"b = b"
-							],
-							"leftEmbeddingField" : "y",
-							"rightEmbeddingField" : "none",
-							"stage" : "HASH_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								"d" : {
-									"$lt" : 3
-								}
-							},
-							"nss" : "test.basic_joins_md_foreign1",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"a = a"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "x",
-					"stage" : "HASH_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$x.a",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
+HASH_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  filter: {  "a" : {  "$gt" : 1 } }
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  filter: {  "b" : {  "$gt" : "aaa" } }
+  direction: "forward"
 ```
+### With random order, seed 45, hash join enabled
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  filter: {  "a" : {  "$gt" : 1 } }
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  filter: {  "b" : {  "$gt" : "aaa" } }
+  direction: "forward"
+```
 ### With fixed order, index join
-### Pipeline
-```json
-[
-	{
-		"$match" : {
-			"a" : {
-				"$gt" : 1
-			}
-		}
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$x.a"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "count" : 2 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "7D59BE511C0D33652DB26A61DFFA0D36F47580971FB97DF9C3C4BC3A3F52F932",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"indexBounds" : {
-											"b" : [
-												"(\"aaa\", {})"
-											]
-										},
-										"indexName" : "b_1",
-										"isMultiKey" : false,
-										"isPartial" : false,
-										"isSparse" : false,
-										"isUnique" : false,
-										"keyPattern" : {
-											"b" : 1
-										},
-										"multiKeyPaths" : {
-											"b" : [ ]
-										},
-										"nss" : "test.basic_joins_md_foreign2",
-										"stage" : "IXSCAN"
-									},
-									"nss" : "test.basic_joins_md_foreign2",
-									"stage" : "FETCH"
-								},
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											"a" : {
-												"$gt" : 1
-											}
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								}
-							],
-							"joinPredicates" : [
-								"b = b"
-							],
-							"leftEmbeddingField" : "y",
-							"rightEmbeddingField" : "none",
-							"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-						},
-						{
-							"filter" : {
-								"d" : {
-									"$lt" : 3
-								}
-							},
-							"inputStage" : {
-								"indexName" : "a_1",
-								"isMultiKey" : false,
-								"isPartial" : false,
-								"isSparse" : false,
-								"isUnique" : false,
-								"keyPattern" : {
-									"a" : 1
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "INDEX_PROBE_NODE"
-							},
-							"nss" : "test.basic_joins_md_foreign1",
-							"stage" : "FETCH"
-						}
-					],
-					"joinPredicates" : [
-						"a = a"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 8,
-					"rightEmbeddingField" : "x",
-					"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$x.a",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
+```
+INDEXED_NESTED_LOOP_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign1]
+  |  keyPattern: {  "a" : 1 }
+  |  indexName: "a_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  filter: {  "a" : {  "$gt" : 1 } }
+  |  direction: "forward"
+  |
+  FETCH [test.basic_joins_md_foreign2]
+  
+  |
+  IXSCAN [test.basic_joins_md_foreign2]
+  keyPattern: {  "b" : 1 }
+  indexName: "b_1"
+  isMultiKey: false
+  multiKeyPaths: {  "b" : [ ] }
+  isUnique: false
+  isSparse: false
+  isPartial: false
+  direction: "forward"
+  indexBounds: {  "b" : [ "(\"aaa\", {})" ] }
+```
 ### With bottom-up plan enumeration and indexes
-### Pipeline
-```json
-[
-	{
-		"$match" : {
-			"a" : {
-				"$gt" : 1
-			}
-		}
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$x.a"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "count" : 2 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "7D59BE511C0D33652DB26A61DFFA0D36F47580971FB97DF9C3C4BC3A3F52F932",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											"a" : {
-												"$gt" : 1
-											}
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								},
-								{
-									"filter" : {
-										"d" : {
-											"$lt" : 3
-										}
-									},
-									"inputStage" : {
-										"indexName" : "a_1",
-										"isMultiKey" : false,
-										"isPartial" : false,
-										"isSparse" : false,
-										"isUnique" : false,
-										"keyPattern" : {
-											"a" : 1
-										},
-										"nss" : "test.basic_joins_md_foreign1",
-										"stage" : "INDEX_PROBE_NODE"
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "FETCH"
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "none",
-							"rightEmbeddingField" : "x",
-							"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-						},
-						{
-							"filter" : {
-								"b" : {
-									"$gt" : "aaa"
-								}
-							},
-							"inputStage" : {
-								"indexName" : "b_1",
-								"isMultiKey" : false,
-								"isPartial" : false,
-								"isSparse" : false,
-								"isUnique" : false,
-								"keyPattern" : {
-									"b" : 1
-								},
-								"nss" : "test.basic_joins_md_foreign2",
-								"stage" : "INDEX_PROBE_NODE"
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "FETCH"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 8,
-					"rightEmbeddingField" : "y",
-					"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$x.a",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
+usedJoinOptimization: true
 
+```
+INDEXED_NESTED_LOOP_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign2]
+  |  keyPattern: {  "b" : 1 }
+  |  indexName: "b_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  INDEXED_NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign1]
+  |  keyPattern: {  "a" : 1 }
+  |  indexName: "a_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  PROJECTION_SIMPLE
+  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |
+  COLLSCAN [test.basic_joins_md]
+  filter: {  "a" : {  "$gt" : 1 } }
+  direction: "forward"
+```
 ## 6. Example with two joins and sub-pipeline with un-correlated $match and $match prefix
 ### No join opt
 ### Pipeline
@@ -6532,1123 +1959,252 @@ Execution Engine: sbe
 ```
 
 ### With bottom-up plan enumeration (left-deep)
-### Pipeline
-```json
-[
-	{
-		"$match" : {
-			"a" : {
-				"$gt" : 1
-			}
-		}
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "D2D2550CF530351E25FFDB1BB9DBD96DD0CE98C0FA4082BADF1F9BC9F7579A03",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							"a" : {
-								"$gt" : 1
-							}
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							"d" : {
-								"$lt" : 3
-							}
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					"b" : {
-						"$gt" : "aaa"
-					}
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "y",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md]
+  filter: {  "a" : {  "$gt" : 1 } }
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (right-deep)
-### Pipeline
-```json
-[
-	{
-		"$match" : {
-			"a" : {
-				"$gt" : 1
-			}
-		}
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "D2D2550CF530351E25FFDB1BB9DBD96DD0CE98C0FA4082BADF1F9BC9F7579A03",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"direction" : "forward",
-				"filter" : {
-					"b" : {
-						"$gt" : "aaa"
-					}
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			},
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							"a" : {
-								"$gt" : 1
-							}
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							"d" : {
-								"$lt" : 3
-							}
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "y",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "none",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "y"
+rightEmbeddingField: "none"
+  |  |
+  |  HASH_JOIN_EMBEDDING [a = a]
+  |  leftEmbeddingField: "none"
+  |  rightEmbeddingField: "x"
+  |  |  |
+  |  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  |  direction: "forward"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  filter: {  "a" : {  "$gt" : 1 } }
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  filter: {  "b" : {  "$gt" : "aaa" } }
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (zig-zag)
-### Pipeline
-```json
-[
-	{
-		"$match" : {
-			"a" : {
-				"$gt" : 1
-			}
-		}
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "D2D2550CF530351E25FFDB1BB9DBD96DD0CE98C0FA4082BADF1F9BC9F7579A03",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							"a" : {
-								"$gt" : 1
-							}
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							"d" : {
-								"$lt" : 3
-							}
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					"b" : {
-						"$gt" : "aaa"
-					}
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "y",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md]
+  filter: {  "a" : {  "$gt" : 1 } }
+  direction: "forward"
+```
 ### With random order, seed 44, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$match" : {
-			"a" : {
-				"$gt" : 1
-			}
-		}
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "D2D2550CF530351E25FFDB1BB9DBD96DD0CE98C0FA4082BADF1F9BC9F7579A03",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							"d" : {
-								"$lt" : 3
-							}
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							"a" : {
-								"$gt" : 1
-							}
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "x",
-				"rightEmbeddingField" : "none",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					"b" : {
-						"$gt" : "aaa"
-					}
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "y",
-		"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+NESTED_LOOP_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "x"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  filter: {  "a" : {  "$gt" : 1 } }
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign1]
+  filter: {  "d" : {  "$lt" : 3 } }
+  direction: "forward"
+```
 ### With random order, seed 44, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$match" : {
-			"a" : {
-				"$gt" : 1
-			}
-		}
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "D2D2550CF530351E25FFDB1BB9DBD96DD0CE98C0FA4082BADF1F9BC9F7579A03",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							"d" : {
-								"$lt" : 3
-							}
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							"a" : {
-								"$gt" : 1
-							}
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "x",
-				"rightEmbeddingField" : "none",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					"b" : {
-						"$gt" : "aaa"
-					}
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "y",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
-### With random order, seed 420, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$match" : {
-			"a" : {
-				"$gt" : 1
-			}
-		}
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "D2D2550CF530351E25FFDB1BB9DBD96DD0CE98C0FA4082BADF1F9BC9F7579A03",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							"b" : {
-								"$gt" : "aaa"
-							}
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							"a" : {
-								"$gt" : 1
-							}
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"b = b"
-				],
-				"leftEmbeddingField" : "y",
-				"rightEmbeddingField" : "none",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					"d" : {
-						"$lt" : 3
-					}
-				},
-				"nss" : "test.basic_joins_md_foreign1",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"a = a"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "x",
-		"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "x"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  filter: {  "a" : {  "$gt" : 1 } }
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign1]
+  filter: {  "d" : {  "$lt" : 3 } }
+  direction: "forward"
 ```
+### With random order, seed 45, nested loop joins
 usedJoinOptimization: true
 
-### With random order, seed 420, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$match" : {
-			"a" : {
-				"$gt" : 1
-			}
-		}
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "D2D2550CF530351E25FFDB1BB9DBD96DD0CE98C0FA4082BADF1F9BC9F7579A03",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							"b" : {
-								"$gt" : "aaa"
-							}
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							"a" : {
-								"$gt" : 1
-							}
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"b = b"
-				],
-				"leftEmbeddingField" : "y",
-				"rightEmbeddingField" : "none",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					"d" : {
-						"$lt" : 3
-					}
-				},
-				"nss" : "test.basic_joins_md_foreign1",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"a = a"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "x",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
+HASH_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  filter: {  "a" : {  "$gt" : 1 } }
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  filter: {  "b" : {  "$gt" : "aaa" } }
+  direction: "forward"
 ```
+### With random order, seed 45, hash join enabled
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  filter: {  "a" : {  "$gt" : 1 } }
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  filter: {  "b" : {  "$gt" : "aaa" } }
+  direction: "forward"
+```
 ### With fixed order, index join
-### Pipeline
-```json
-[
-	{
-		"$match" : {
-			"a" : {
-				"$gt" : 1
-			}
-		}
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "D2D2550CF530351E25FFDB1BB9DBD96DD0CE98C0FA4082BADF1F9BC9F7579A03",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStage" : {
-							"direction" : "forward",
-							"indexBounds" : {
-								"b" : [
-									"(\"aaa\", {})"
-								]
-							},
-							"indexName" : "b_1",
-							"isMultiKey" : false,
-							"isPartial" : false,
-							"isSparse" : false,
-							"isUnique" : false,
-							"keyPattern" : {
-								"b" : 1
-							},
-							"multiKeyPaths" : {
-								"b" : [ ]
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "IXSCAN"
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "FETCH"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							"a" : {
-								"$gt" : 1
-							}
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"b = b"
-				],
-				"leftEmbeddingField" : "y",
-				"rightEmbeddingField" : "none",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"filter" : {
-					"d" : {
-						"$lt" : 3
-					}
-				},
-				"inputStage" : {
-					"indexName" : "a_1",
-					"isMultiKey" : false,
-					"isPartial" : false,
-					"isSparse" : false,
-					"isUnique" : false,
-					"keyPattern" : {
-						"a" : 1
-					},
-					"nss" : "test.basic_joins_md_foreign1",
-					"stage" : "INDEX_PROBE_NODE"
-				},
-				"nss" : "test.basic_joins_md_foreign1",
-				"stage" : "FETCH"
-			}
-		],
-		"joinPredicates" : [
-			"a = a"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "x",
-		"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+INDEXED_NESTED_LOOP_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign1]
+  |  keyPattern: {  "a" : 1 }
+  |  indexName: "a_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  filter: {  "a" : {  "$gt" : 1 } }
+  |  direction: "forward"
+  |
+  FETCH [test.basic_joins_md_foreign2]
+  
+  |
+  IXSCAN [test.basic_joins_md_foreign2]
+  keyPattern: {  "b" : 1 }
+  indexName: "b_1"
+  isMultiKey: false
+  multiKeyPaths: {  "b" : [ ] }
+  isUnique: false
+  isSparse: false
+  isPartial: false
+  direction: "forward"
+  indexBounds: {  "b" : [ "(\"aaa\", {})" ] }
+```
 ### With bottom-up plan enumeration and indexes
-### Pipeline
-```json
-[
-	{
-		"$match" : {
-			"a" : {
-				"$gt" : 1
-			}
-		}
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "D2D2550CF530351E25FFDB1BB9DBD96DD0CE98C0FA4082BADF1F9BC9F7579A03",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							"a" : {
-								"$gt" : 1
-							}
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"filter" : {
-							"d" : {
-								"$lt" : 3
-							}
-						},
-						"inputStage" : {
-							"indexName" : "a_1",
-							"isMultiKey" : false,
-							"isPartial" : false,
-							"isSparse" : false,
-							"isUnique" : false,
-							"keyPattern" : {
-								"a" : 1
-							},
-							"nss" : "test.basic_joins_md_foreign1",
-							"stage" : "INDEX_PROBE_NODE"
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "FETCH"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"filter" : {
-					"b" : {
-						"$gt" : "aaa"
-					}
-				},
-				"inputStage" : {
-					"indexName" : "b_1",
-					"isMultiKey" : false,
-					"isPartial" : false,
-					"isSparse" : false,
-					"isUnique" : false,
-					"keyPattern" : {
-						"b" : 1
-					},
-					"nss" : "test.basic_joins_md_foreign2",
-					"stage" : "INDEX_PROBE_NODE"
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "FETCH"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "y",
-		"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
-```
+usedJoinOptimization: true
 
+```
+INDEXED_NESTED_LOOP_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign2]
+  |  keyPattern: {  "b" : 1 }
+  |  indexName: "b_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  INDEXED_NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign1]
+  |  keyPattern: {  "a" : 1 }
+  |  indexName: "a_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  COLLSCAN [test.basic_joins_md]
+  filter: {  "a" : {  "$gt" : 1 } }
+  direction: "forward"
+```
 ## 7. Basic example with referencing field from previous lookup
 ### No join opt
 ### Pipeline
@@ -7722,822 +2278,202 @@ Execution Engine: sbe
 ```
 
 ### With bottom-up plan enumeration (left-deep)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 0,  "a" : 1,  "b" : "foo",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DC5CAF413E9B6B8B5E8B2D3FB91E4D546524BF2707BBE30472D5CA8E12F6637E",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign3",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"x.c = c"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "z",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [x.c = c]
+leftEmbeddingField: "none"
+rightEmbeddingField: "z"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (right-deep)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 0,  "a" : 1,  "b" : "foo",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DC5CAF413E9B6B8B5E8B2D3FB91E4D546524BF2707BBE30472D5CA8E12F6637E",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign3",
-				"stage" : "COLLSCAN"
-			},
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			}
-		],
-		"joinPredicates" : [
-			"c = x.c"
-		],
-		"leftEmbeddingField" : "z",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "none",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [c = x.c]
+leftEmbeddingField: "z"
+rightEmbeddingField: "none"
+  |  |
+  |  HASH_JOIN_EMBEDDING [a = a]
+  |  leftEmbeddingField: "none"
+  |  rightEmbeddingField: "x"
+  |  |  |
+  |  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  |  direction: "forward"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign3]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (zig-zag)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 0,  "a" : 1,  "b" : "foo",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DC5CAF413E9B6B8B5E8B2D3FB91E4D546524BF2707BBE30472D5CA8E12F6637E",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign3",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"x.c = c"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "z",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [x.c = c]
+leftEmbeddingField: "none"
+rightEmbeddingField: "z"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ### With random order, seed 44, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 0,  "a" : 1,  "b" : "foo",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DC5CAF413E9B6B8B5E8B2D3FB91E4D546524BF2707BBE30472D5CA8E12F6637E",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "x",
-				"rightEmbeddingField" : "none",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign3",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"x.c = c"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "z",
-		"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+NESTED_LOOP_JOIN_EMBEDDING [x.c = c]
+leftEmbeddingField: "none"
+rightEmbeddingField: "z"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "x"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign1]
+  direction: "forward"
+```
 ### With random order, seed 44, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 0,  "a" : 1,  "b" : "foo",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DC5CAF413E9B6B8B5E8B2D3FB91E4D546524BF2707BBE30472D5CA8E12F6637E",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "x",
-				"rightEmbeddingField" : "none",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign3",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"x.c = c"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "z",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
-### With random order, seed 420, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 0,  "a" : 1,  "b" : "foo",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DC5CAF413E9B6B8B5E8B2D3FB91E4D546524BF2707BBE30472D5CA8E12F6637E",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign3",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"c = c"
-				],
-				"leftEmbeddingField" : "z",
-				"rightEmbeddingField" : "x",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"x.a = a"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "none",
-		"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
+HASH_JOIN_EMBEDDING [x.c = c]
+leftEmbeddingField: "none"
+rightEmbeddingField: "z"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "x"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign1]
+  direction: "forward"
 ```
+### With random order, seed 45, nested loop joins
 usedJoinOptimization: true
 
-### With random order, seed 420, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 0,  "a" : 1,  "b" : "foo",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DC5CAF413E9B6B8B5E8B2D3FB91E4D546524BF2707BBE30472D5CA8E12F6637E",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign3",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"c = c"
-				],
-				"leftEmbeddingField" : "z",
-				"rightEmbeddingField" : "x",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"x.a = a"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "none",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
+HASH_JOIN_EMBEDDING [x.a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [c = c]
+  leftEmbeddingField: "z"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign3]
+  direction: "forward"
 ```
+### With random order, seed 45, hash join enabled
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [x.a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [c = c]
+  leftEmbeddingField: "z"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign3]
+  direction: "forward"
+```
 ### With fixed order, index join
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 0,  "a" : 1,  "b" : "foo",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DC5CAF413E9B6B8B5E8B2D3FB91E4D546524BF2707BBE30472D5CA8E12F6637E",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign3",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"c = c"
-				],
-				"leftEmbeddingField" : "z",
-				"rightEmbeddingField" : "x",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"x.a = a"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "none",
-		"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+NESTED_LOOP_JOIN_EMBEDDING [x.a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [c = c]
+  leftEmbeddingField: "z"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign3]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration and indexes
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 0,  "a" : 1,  "b" : "foo",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DC5CAF413E9B6B8B5E8B2D3FB91E4D546524BF2707BBE30472D5CA8E12F6637E",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"inputStage" : {
-							"indexName" : "a_1",
-							"isMultiKey" : false,
-							"isPartial" : false,
-							"isSparse" : false,
-							"isUnique" : false,
-							"keyPattern" : {
-								"a" : 1
-							},
-							"nss" : "test.basic_joins_md_foreign1",
-							"stage" : "INDEX_PROBE_NODE"
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "FETCH"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign3",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"x.c = c"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 6,
-		"rightEmbeddingField" : "z",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
+usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [x.c = c]
+leftEmbeddingField: "none"
+rightEmbeddingField: "z"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  INDEXED_NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign1]
+  |  
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign1]
+  |  keyPattern: {  "a" : 1 }
+  |  indexName: "a_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ## 8. Basic example with 3 joins & subsequent join referencing fields from previous lookups
 ### No join opt
 ### Pipeline
@@ -8633,1117 +2569,281 @@ Execution Engine: sbe
 ```
 
 ### With bottom-up plan enumeration (left-deep)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DD24FFAE1F16C6C1F5B03939E0C642A797120A2585058C72554C9649BEA427AB",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"a = a"
-						],
-						"leftEmbeddingField" : "none",
-						"rightEmbeddingField" : "x",
-						"stage" : "HASH_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"b = b"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "y",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign3",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"x.c = c"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "z",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [x.c = c]
+leftEmbeddingField: "none"
+rightEmbeddingField: "z"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (right-deep)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DD24FFAE1F16C6C1F5B03939E0C642A797120A2585058C72554C9649BEA427AB",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign3",
-				"stage" : "COLLSCAN"
-			},
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"a = a"
-						],
-						"leftEmbeddingField" : "none",
-						"rightEmbeddingField" : "x",
-						"stage" : "HASH_JOIN_EMBEDDING"
-					}
-				],
-				"joinPredicates" : [
-					"b = b"
-				],
-				"leftEmbeddingField" : "y",
-				"rightEmbeddingField" : "none",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			}
-		],
-		"joinPredicates" : [
-			"c = x.c"
-		],
-		"leftEmbeddingField" : "z",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "none",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [c = x.c]
+leftEmbeddingField: "z"
+rightEmbeddingField: "none"
+  |  |
+  |  HASH_JOIN_EMBEDDING [b = b]
+  |  leftEmbeddingField: "y"
+  |  rightEmbeddingField: "none"
+  |  |  |
+  |  |  HASH_JOIN_EMBEDDING [a = a]
+  |  |  leftEmbeddingField: "none"
+  |  |  rightEmbeddingField: "x"
+  |  |  |  |
+  |  |  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  |  |  direction: "forward"
+  |  |  |
+  |  |  COLLSCAN [test.basic_joins_md]
+  |  |  direction: "forward"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign3]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (zig-zag)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DD24FFAE1F16C6C1F5B03939E0C642A797120A2585058C72554C9649BEA427AB",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign3",
-				"stage" : "COLLSCAN"
-			},
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"a = a"
-						],
-						"leftEmbeddingField" : "none",
-						"rightEmbeddingField" : "x",
-						"stage" : "HASH_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"b = b"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "y",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			}
-		],
-		"joinPredicates" : [
-			"c = x.c"
-		],
-		"leftEmbeddingField" : "z",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "none",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [c = x.c]
+leftEmbeddingField: "z"
+rightEmbeddingField: "none"
+  |  |
+  |  HASH_JOIN_EMBEDDING [b = b]
+  |  leftEmbeddingField: "none"
+  |  rightEmbeddingField: "y"
+  |  |  |
+  |  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  |  direction: "forward"
+  |  |
+  |  HASH_JOIN_EMBEDDING [a = a]
+  |  leftEmbeddingField: "none"
+  |  rightEmbeddingField: "x"
+  |  |  |
+  |  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  |  direction: "forward"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign3]
+  direction: "forward"
+```
 ### With random order, seed 44, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DD24FFAE1F16C6C1F5B03939E0C642A797120A2585058C72554C9649BEA427AB",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"a = a"
-						],
-						"leftEmbeddingField" : "none",
-						"rightEmbeddingField" : "x",
-						"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign3",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"x.c = c"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "z",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "y",
-		"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+NESTED_LOOP_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [x.c = c]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "z"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ### With random order, seed 44, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DD24FFAE1F16C6C1F5B03939E0C642A797120A2585058C72554C9649BEA427AB",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"a = a"
-						],
-						"leftEmbeddingField" : "none",
-						"rightEmbeddingField" : "x",
-						"stage" : "HASH_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign3",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"x.c = c"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "z",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "y",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
-### With random order, seed 420, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DD24FFAE1F16C6C1F5B03939E0C642A797120A2585058C72554C9649BEA427AB",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign3",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"c = c"
-						],
-						"leftEmbeddingField" : "x",
-						"rightEmbeddingField" : "z",
-						"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"x.a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "none",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "y",
-		"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [x.c = c]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "z"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
 ```
+### With random order, seed 45, nested loop joins
 usedJoinOptimization: true
 
-### With random order, seed 420, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DD24FFAE1F16C6C1F5B03939E0C642A797120A2585058C72554C9649BEA427AB",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign3",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"c = c"
-						],
-						"leftEmbeddingField" : "x",
-						"rightEmbeddingField" : "z",
-						"stage" : "HASH_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"x.a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "none",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "y",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [x.a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [c = c]
+  leftEmbeddingField: "z"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign3]
+  direction: "forward"
 ```
+### With random order, seed 45, hash join enabled
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [x.a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [c = c]
+  leftEmbeddingField: "z"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign3]
+  direction: "forward"
+```
 ### With fixed order, index join
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DD24FFAE1F16C6C1F5B03939E0C642A797120A2585058C72554C9649BEA427AB",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign3",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"c = c"
-						],
-						"leftEmbeddingField" : "x",
-						"rightEmbeddingField" : "z",
-						"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"x.a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "none",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"inputStage" : {
-					"indexName" : "b_1",
-					"isMultiKey" : false,
-					"isPartial" : false,
-					"isSparse" : false,
-					"isUnique" : false,
-					"keyPattern" : {
-						"b" : 1
-					},
-					"nss" : "test.basic_joins_md_foreign2",
-					"stage" : "INDEX_PROBE_NODE"
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "FETCH"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 8,
-		"rightEmbeddingField" : "y",
-		"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+INDEXED_NESTED_LOOP_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign2]
+  |  
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign2]
+  |  keyPattern: {  "b" : 1 }
+  |  indexName: "b_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [x.a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [c = c]
+  leftEmbeddingField: "z"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign3]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration and indexes
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DD24FFAE1F16C6C1F5B03939E0C642A797120A2585058C72554C9649BEA427AB",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"inputStage" : {
-									"indexName" : "a_1",
-									"isMultiKey" : false,
-									"isPartial" : false,
-									"isSparse" : false,
-									"isUnique" : false,
-									"keyPattern" : {
-										"a" : 1
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "INDEX_PROBE_NODE"
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "FETCH"
-							}
-						],
-						"joinPredicates" : [
-							"a = a"
-						],
-						"leftEmbeddingField" : "none",
-						"rightEmbeddingField" : "x",
-						"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-					},
-					{
-						"inputStage" : {
-							"indexName" : "b_1",
-							"isMultiKey" : false,
-							"isPartial" : false,
-							"isSparse" : false,
-							"isUnique" : false,
-							"keyPattern" : {
-								"b" : 1
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "INDEX_PROBE_NODE"
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "FETCH"
-					}
-				],
-				"joinPredicates" : [
-					"b = b"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "y",
-				"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign3",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"x.c = c"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 9,
-		"rightEmbeddingField" : "z",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
+usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [x.c = c]
+leftEmbeddingField: "none"
+rightEmbeddingField: "z"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  INDEXED_NESTED_LOOP_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "y"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign2]
+  |  
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign2]
+  |  keyPattern: {  "b" : 1 }
+  |  indexName: "b_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  INDEXED_NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign1]
+  |  
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign1]
+  |  keyPattern: {  "a" : 1 }
+  |  indexName: "a_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ## 9. Basic example with 3 joins & subsequent join referencing nested paths
 ### No join opt
 ### Pipeline
@@ -9834,1053 +2934,262 @@ Execution Engine: sbe
 ```
 
 ### With bottom-up plan enumeration (left-deep)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "w.y",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$w.y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "k.y.z",
-			"localField" : "w.y.d",
-			"foreignField" : "d"
-		}
-	},
-	{
-		"$unwind" : "$k.y.z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "k" : {  "y" : {  "z" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } } },  "w" : {  "y" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } },  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "9226A4FAA10C8790B27D9B5B865D46D0C58179A837F014E6289A34A6EBE76420",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"a = a"
-						],
-						"leftEmbeddingField" : "none",
-						"rightEmbeddingField" : "x",
-						"stage" : "HASH_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign3",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"x.c = c"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "w.y",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"w.y.d = d"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "k.y.z",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [w.y.d = d]
+leftEmbeddingField: "none"
+rightEmbeddingField: "k.y.z"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [x.c = c]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "w.y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (right-deep)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "w.y",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$w.y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "k.y.z",
-			"localField" : "w.y.d",
-			"foreignField" : "d"
-		}
-	},
-	{
-		"$unwind" : "$k.y.z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "k" : {  "y" : {  "z" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } } },  "w" : {  "y" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } },  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "9226A4FAA10C8790B27D9B5B865D46D0C58179A837F014E6289A34A6EBE76420",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			},
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign3",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"a = a"
-						],
-						"leftEmbeddingField" : "none",
-						"rightEmbeddingField" : "x",
-						"stage" : "HASH_JOIN_EMBEDDING"
-					}
-				],
-				"joinPredicates" : [
-					"c = x.c"
-				],
-				"leftEmbeddingField" : "w.y",
-				"rightEmbeddingField" : "none",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			}
-		],
-		"joinPredicates" : [
-			"d = w.y.d"
-		],
-		"leftEmbeddingField" : "k.y.z",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "none",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [d = w.y.d]
+leftEmbeddingField: "k.y.z"
+rightEmbeddingField: "none"
+  |  |
+  |  HASH_JOIN_EMBEDDING [c = x.c]
+  |  leftEmbeddingField: "w.y"
+  |  rightEmbeddingField: "none"
+  |  |  |
+  |  |  HASH_JOIN_EMBEDDING [a = a]
+  |  |  leftEmbeddingField: "none"
+  |  |  rightEmbeddingField: "x"
+  |  |  |  |
+  |  |  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  |  |  direction: "forward"
+  |  |  |
+  |  |  COLLSCAN [test.basic_joins_md]
+  |  |  direction: "forward"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (zig-zag)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "w.y",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$w.y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "k.y.z",
-			"localField" : "w.y.d",
-			"foreignField" : "d"
-		}
-	},
-	{
-		"$unwind" : "$k.y.z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "k" : {  "y" : {  "z" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } } },  "w" : {  "y" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } },  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "9226A4FAA10C8790B27D9B5B865D46D0C58179A837F014E6289A34A6EBE76420",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			},
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"a = a"
-						],
-						"leftEmbeddingField" : "none",
-						"rightEmbeddingField" : "x",
-						"stage" : "HASH_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign3",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"x.c = c"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "w.y",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			}
-		],
-		"joinPredicates" : [
-			"d = w.y.d"
-		],
-		"leftEmbeddingField" : "k.y.z",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "none",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [d = w.y.d]
+leftEmbeddingField: "k.y.z"
+rightEmbeddingField: "none"
+  |  |
+  |  HASH_JOIN_EMBEDDING [x.c = c]
+  |  leftEmbeddingField: "none"
+  |  rightEmbeddingField: "w.y"
+  |  |  |
+  |  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  |  direction: "forward"
+  |  |
+  |  HASH_JOIN_EMBEDDING [a = a]
+  |  leftEmbeddingField: "none"
+  |  rightEmbeddingField: "x"
+  |  |  |
+  |  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  |  direction: "forward"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  direction: "forward"
+```
 ### With random order, seed 44, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "w.y",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$w.y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "k.y.z",
-			"localField" : "w.y.d",
-			"foreignField" : "d"
-		}
-	},
-	{
-		"$unwind" : "$k.y.z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "k" : {  "y" : {  "z" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } } },  "w" : {  "y" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } },  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "9226A4FAA10C8790B27D9B5B865D46D0C58179A837F014E6289A34A6EBE76420",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"a = a"
-						],
-						"leftEmbeddingField" : "none",
-						"rightEmbeddingField" : "x",
-						"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign3",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"x.c = c"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "w.y",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"w.y.d = d"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "k.y.z",
-		"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+NESTED_LOOP_JOIN_EMBEDDING [w.y.d = d]
+leftEmbeddingField: "none"
+rightEmbeddingField: "k.y.z"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [x.c = c]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "w.y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ### With random order, seed 44, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "w.y",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$w.y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "k.y.z",
-			"localField" : "w.y.d",
-			"foreignField" : "d"
-		}
-	},
-	{
-		"$unwind" : "$k.y.z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "k" : {  "y" : {  "z" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } } },  "w" : {  "y" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } },  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "9226A4FAA10C8790B27D9B5B865D46D0C58179A837F014E6289A34A6EBE76420",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"a = a"
-						],
-						"leftEmbeddingField" : "none",
-						"rightEmbeddingField" : "x",
-						"stage" : "HASH_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign3",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"x.c = c"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "w.y",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"w.y.d = d"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "k.y.z",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
-### With random order, seed 420, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "w.y",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$w.y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "k.y.z",
-			"localField" : "w.y.d",
-			"foreignField" : "d"
-		}
-	},
-	{
-		"$unwind" : "$k.y.z"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "k" : {  "y" : {  "z" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } } },  "w" : {  "y" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } },  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "9226A4FAA10C8790B27D9B5B865D46D0C58179A837F014E6289A34A6EBE76420",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign3",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"c = c"
-						],
-						"leftEmbeddingField" : "x",
-						"rightEmbeddingField" : "w.y",
-						"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"w.y.d = d"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "k.y.z",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"x.a = a"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "none",
-		"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
+HASH_JOIN_EMBEDDING [w.y.d = d]
+leftEmbeddingField: "none"
+rightEmbeddingField: "k.y.z"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [x.c = c]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "w.y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
 ```
+### With random order, seed 45, nested loop joins
 usedJoinOptimization: true
 
-### With random order, seed 420, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "w.y",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$w.y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "k.y.z",
-			"localField" : "w.y.d",
-			"foreignField" : "d"
-		}
-	},
-	{
-		"$unwind" : "$k.y.z"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "k" : {  "y" : {  "z" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } } },  "w" : {  "y" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } },  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "9226A4FAA10C8790B27D9B5B865D46D0C58179A837F014E6289A34A6EBE76420",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign3",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"c = c"
-						],
-						"leftEmbeddingField" : "x",
-						"rightEmbeddingField" : "w.y",
-						"stage" : "HASH_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"w.y.d = d"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "k.y.z",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"x.a = a"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "none",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
+HASH_JOIN_EMBEDDING [x.a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [w.y.c = c]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [d = d]
+  leftEmbeddingField: "k.y.z"
+  rightEmbeddingField: "w.y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  direction: "forward"
 ```
+### With random order, seed 45, hash join enabled
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [x.a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [w.y.c = c]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [d = d]
+  leftEmbeddingField: "k.y.z"
+  rightEmbeddingField: "w.y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  direction: "forward"
+```
 ### With fixed order, index join
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "w.y",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$w.y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "k.y.z",
-			"localField" : "w.y.d",
-			"foreignField" : "d"
-		}
-	},
-	{
-		"$unwind" : "$k.y.z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "k" : {  "y" : {  "z" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } } },  "w" : {  "y" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } },  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "9226A4FAA10C8790B27D9B5B865D46D0C58179A837F014E6289A34A6EBE76420",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign3",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"c = c"
-						],
-						"leftEmbeddingField" : "x",
-						"rightEmbeddingField" : "w.y",
-						"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"w.y.d = d"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "k.y.z",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"x.a = a"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "none",
-		"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+NESTED_LOOP_JOIN_EMBEDDING [x.a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [w.y.c = c]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [d = d]
+  leftEmbeddingField: "k.y.z"
+  rightEmbeddingField: "w.y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration and indexes
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "w.y",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$w.y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "k.y.z",
-			"localField" : "w.y.d",
-			"foreignField" : "d"
-		}
-	},
-	{
-		"$unwind" : "$k.y.z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "k" : {  "y" : {  "z" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } } },  "w" : {  "y" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } },  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "9226A4FAA10C8790B27D9B5B865D46D0C58179A837F014E6289A34A6EBE76420",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"inputStage" : {
-									"indexName" : "a_1",
-									"isMultiKey" : false,
-									"isPartial" : false,
-									"isSparse" : false,
-									"isUnique" : false,
-									"keyPattern" : {
-										"a" : 1
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "INDEX_PROBE_NODE"
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "FETCH"
-							}
-						],
-						"joinPredicates" : [
-							"a = a"
-						],
-						"leftEmbeddingField" : "none",
-						"rightEmbeddingField" : "x",
-						"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign3",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"x.c = c"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "w.y",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"w.y.d = d"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 8,
-		"rightEmbeddingField" : "k.y.z",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
+usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [w.y.d = d]
+leftEmbeddingField: "none"
+rightEmbeddingField: "k.y.z"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [x.c = c]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "w.y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  INDEXED_NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign1]
+  |  
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign1]
+  |  keyPattern: {  "a" : 1 }
+  |  indexName: "a_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
diff --git a/jstests/query_golden/expected_output/sbeRestricted/basic_joins.md b/jstests/query_golden/expected_output/sbeRestricted/basic_joins.md
index 2706aba3033..5d45005d75e 100644
--- a/jstests/query_golden/expected_output/sbeRestricted/basic_joins.md
+++ b/jstests/query_golden/expected_output/sbeRestricted/basic_joins.md
@@ -80,856 +80,218 @@ Execution Engine: classic
 ```
 
 ### With bottom-up plan enumeration (left-deep)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "2312073BEBB7A5E1754E2D03D9CB40B75C126DBF60867D4639E7E281C9E3DFAC",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "y",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (right-deep)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "2312073BEBB7A5E1754E2D03D9CB40B75C126DBF60867D4639E7E281C9E3DFAC",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			},
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "y",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "none",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "y"
+rightEmbeddingField: "none"
+  |  |
+  |  HASH_JOIN_EMBEDDING [a = a]
+  |  leftEmbeddingField: "none"
+  |  rightEmbeddingField: "x"
+  |  |  |
+  |  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  |  direction: "forward"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (zig-zag)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "2312073BEBB7A5E1754E2D03D9CB40B75C126DBF60867D4639E7E281C9E3DFAC",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "y",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ### With random order, seed 44, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "2312073BEBB7A5E1754E2D03D9CB40B75C126DBF60867D4639E7E281C9E3DFAC",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "x",
-				"rightEmbeddingField" : "none",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "y",
-		"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+NESTED_LOOP_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "x"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign1]
+  direction: "forward"
+```
 ### With random order, seed 44, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "2312073BEBB7A5E1754E2D03D9CB40B75C126DBF60867D4639E7E281C9E3DFAC",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "x",
-				"rightEmbeddingField" : "none",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "y",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
-### With random order, seed 420, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "2312073BEBB7A5E1754E2D03D9CB40B75C126DBF60867D4639E7E281C9E3DFAC",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"b = b"
-				],
-				"leftEmbeddingField" : "y",
-				"rightEmbeddingField" : "none",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign1",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"a = a"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "x",
-		"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "x"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign1]
+  direction: "forward"
 ```
+### With random order, seed 45, nested loop joins
 usedJoinOptimization: true
 
-### With random order, seed 420, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "2312073BEBB7A5E1754E2D03D9CB40B75C126DBF60867D4639E7E281C9E3DFAC",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"b = b"
-				],
-				"leftEmbeddingField" : "y",
-				"rightEmbeddingField" : "none",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign1",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"a = a"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "x",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
+HASH_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  direction: "forward"
 ```
+### With random order, seed 45, hash join enabled
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  direction: "forward"
+```
 ### With fixed order, index join
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "2312073BEBB7A5E1754E2D03D9CB40B75C126DBF60867D4639E7E281C9E3DFAC",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"b = b"
-				],
-				"leftEmbeddingField" : "y",
-				"rightEmbeddingField" : "none",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"inputStage" : {
-					"indexName" : "a_1",
-					"isMultiKey" : false,
-					"isPartial" : false,
-					"isSparse" : false,
-					"isUnique" : false,
-					"keyPattern" : {
-						"a" : 1
-					},
-					"nss" : "test.basic_joins_md_foreign1",
-					"stage" : "INDEX_PROBE_NODE"
-				},
-				"nss" : "test.basic_joins_md_foreign1",
-				"stage" : "FETCH"
-			}
-		],
-		"joinPredicates" : [
-			"a = a"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 6,
-		"rightEmbeddingField" : "x",
-		"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+INDEXED_NESTED_LOOP_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign1]
+  |  
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign1]
+  |  keyPattern: {  "a" : 1 }
+  |  indexName: "a_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration and indexes
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "2312073BEBB7A5E1754E2D03D9CB40B75C126DBF60867D4639E7E281C9E3DFAC",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"inputStage" : {
-							"indexName" : "a_1",
-							"isMultiKey" : false,
-							"isPartial" : false,
-							"isSparse" : false,
-							"isUnique" : false,
-							"keyPattern" : {
-								"a" : 1
-							},
-							"nss" : "test.basic_joins_md_foreign1",
-							"stage" : "INDEX_PROBE_NODE"
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "FETCH"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"inputStage" : {
-					"indexName" : "b_1",
-					"isMultiKey" : false,
-					"isPartial" : false,
-					"isSparse" : false,
-					"isUnique" : false,
-					"keyPattern" : {
-						"b" : 1
-					},
-					"nss" : "test.basic_joins_md_foreign2",
-					"stage" : "INDEX_PROBE_NODE"
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "FETCH"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "y",
-		"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
-```
+usedJoinOptimization: true
 
+```
+INDEXED_NESTED_LOOP_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign2]
+  |  
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign2]
+  |  keyPattern: {  "b" : 1 }
+  |  indexName: "b_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  INDEXED_NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign1]
+  |  
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign1]
+  |  keyPattern: {  "a" : 1 }
+  |  indexName: "a_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ## 2. Basic example with two joins and suffix
 ### No join opt
 ### Pipeline
@@ -1036,1126 +398,245 @@ Execution Engine: classic
 ```
 
 ### With bottom-up plan enumeration (left-deep)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$y.b"
-	}
-]
-```
-### Results
-```json
-{  "_id" : "bar",  "count" : 6 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "8E0DF14D3DA69D8B1CF0361E869369F9C5E5F2F2A5D81998E6800BDA4F997B57",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								},
-								{
-									"direction" : "forward",
-									"filter" : {
-										
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "COLLSCAN"
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "none",
-							"rightEmbeddingField" : "x",
-							"stage" : "HASH_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "y",
-					"stage" : "HASH_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$y.b",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  PROJECTION_SIMPLE
+  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (right-deep)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$y.b"
-	}
-]
-```
-### Results
-```json
-{  "_id" : "bar",  "count" : 6 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "8E0DF14D3DA69D8B1CF0361E869369F9C5E5F2F2A5D81998E6800BDA4F997B57",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"direction" : "forward",
-							"filter" : {
-								
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "COLLSCAN"
-						},
-						{
-							"inputStages" : [
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								},
-								{
-									"direction" : "forward",
-									"filter" : {
-										
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "COLLSCAN"
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "none",
-							"rightEmbeddingField" : "x",
-							"stage" : "HASH_JOIN_EMBEDDING"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "y",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "none",
-					"stage" : "HASH_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$y.b",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "y"
+rightEmbeddingField: "none"
+  |  |
+  |  HASH_JOIN_EMBEDDING [a = a]
+  |  leftEmbeddingField: "none"
+  |  rightEmbeddingField: "x"
+  |  |  |
+  |  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  |  direction: "forward"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (zig-zag)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$y.b"
-	}
-]
-```
-### Results
-```json
-{  "_id" : "bar",  "count" : 6 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "8E0DF14D3DA69D8B1CF0361E869369F9C5E5F2F2A5D81998E6800BDA4F997B57",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								},
-								{
-									"direction" : "forward",
-									"filter" : {
-										
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "COLLSCAN"
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "none",
-							"rightEmbeddingField" : "x",
-							"stage" : "HASH_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "y",
-					"stage" : "HASH_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$y.b",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  PROJECTION_SIMPLE
+  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ### With random order, seed 44, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$y.b"
-	}
-]
-```
-### Results
-```json
-{  "_id" : "bar",  "count" : 6 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "8E0DF14D3DA69D8B1CF0361E869369F9C5E5F2F2A5D81998E6800BDA4F997B57",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"direction" : "forward",
-									"filter" : {
-										
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "COLLSCAN"
-								},
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "x",
-							"rightEmbeddingField" : "none",
-							"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "y",
-					"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$y.b",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
+```
+NESTED_LOOP_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "x"
+  rightEmbeddingField: "none"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign1]
+  direction: "forward"
+```
 ### With random order, seed 44, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$y.b"
-	}
-]
-```
-### Results
-```json
-{  "_id" : "bar",  "count" : 6 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "8E0DF14D3DA69D8B1CF0361E869369F9C5E5F2F2A5D81998E6800BDA4F997B57",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"direction" : "forward",
-									"filter" : {
-										
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "COLLSCAN"
-								},
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "x",
-							"rightEmbeddingField" : "none",
-							"stage" : "HASH_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "y",
-					"stage" : "HASH_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$y.b",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
-### With random order, seed 420, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$y.b"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : "bar",  "count" : 6 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "8E0DF14D3DA69D8B1CF0361E869369F9C5E5F2F2A5D81998E6800BDA4F997B57",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"direction" : "forward",
-									"filter" : {
-										
-									},
-									"nss" : "test.basic_joins_md_foreign2",
-									"stage" : "COLLSCAN"
-								},
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								}
-							],
-							"joinPredicates" : [
-								"b = b"
-							],
-							"leftEmbeddingField" : "y",
-							"rightEmbeddingField" : "none",
-							"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								
-							},
-							"nss" : "test.basic_joins_md_foreign1",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"a = a"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "x",
-					"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$y.b",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "x"
+  rightEmbeddingField: "none"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign1]
+  direction: "forward"
 ```
+### With random order, seed 45, nested loop joins
 usedJoinOptimization: true
 
-### With random order, seed 420, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$y.b"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : "bar",  "count" : 6 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "8E0DF14D3DA69D8B1CF0361E869369F9C5E5F2F2A5D81998E6800BDA4F997B57",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"direction" : "forward",
-									"filter" : {
-										
-									},
-									"nss" : "test.basic_joins_md_foreign2",
-									"stage" : "COLLSCAN"
-								},
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								}
-							],
-							"joinPredicates" : [
-								"b = b"
-							],
-							"leftEmbeddingField" : "y",
-							"rightEmbeddingField" : "none",
-							"stage" : "HASH_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								
-							},
-							"nss" : "test.basic_joins_md_foreign1",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"a = a"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "x",
-					"stage" : "HASH_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$y.b",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
+HASH_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  direction: "forward"
 ```
+### With random order, seed 45, hash join enabled
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  direction: "forward"
+```
 ### With fixed order, index join
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$y.b"
-	}
-]
-```
-### Results
-```json
-{  "_id" : "bar",  "count" : 6 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "8E0DF14D3DA69D8B1CF0361E869369F9C5E5F2F2A5D81998E6800BDA4F997B57",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"direction" : "forward",
-									"filter" : {
-										
-									},
-									"nss" : "test.basic_joins_md_foreign2",
-									"stage" : "COLLSCAN"
-								},
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								}
-							],
-							"joinPredicates" : [
-								"b = b"
-							],
-							"leftEmbeddingField" : "y",
-							"rightEmbeddingField" : "none",
-							"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-						},
-						{
-							"inputStage" : {
-								"indexName" : "a_1",
-								"isMultiKey" : false,
-								"isPartial" : false,
-								"isSparse" : false,
-								"isUnique" : false,
-								"keyPattern" : {
-									"a" : 1
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "INDEX_PROBE_NODE"
-							},
-							"nss" : "test.basic_joins_md_foreign1",
-							"stage" : "FETCH"
-						}
-					],
-					"joinPredicates" : [
-						"a = a"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 7,
-					"rightEmbeddingField" : "x",
-					"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$y.b",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
+```
+INDEXED_NESTED_LOOP_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign1]
+  |  
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign1]
+  |  keyPattern: {  "a" : 1 }
+  |  indexName: "a_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration and indexes
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$y.b"
-	}
-]
-```
-### Results
-```json
-{  "_id" : "bar",  "count" : 6 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "8E0DF14D3DA69D8B1CF0361E869369F9C5E5F2F2A5D81998E6800BDA4F997B57",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								},
-								{
-									"inputStage" : {
-										"indexName" : "a_1",
-										"isMultiKey" : false,
-										"isPartial" : false,
-										"isSparse" : false,
-										"isUnique" : false,
-										"keyPattern" : {
-											"a" : 1
-										},
-										"nss" : "test.basic_joins_md_foreign1",
-										"stage" : "INDEX_PROBE_NODE"
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "FETCH"
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "none",
-							"rightEmbeddingField" : "x",
-							"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-						},
-						{
-							"inputStage" : {
-								"indexName" : "b_1",
-								"isMultiKey" : false,
-								"isPartial" : false,
-								"isSparse" : false,
-								"isUnique" : false,
-								"keyPattern" : {
-									"b" : 1
-								},
-								"nss" : "test.basic_joins_md_foreign2",
-								"stage" : "INDEX_PROBE_NODE"
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "FETCH"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 8,
-					"rightEmbeddingField" : "y",
-					"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$y.b",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
+usedJoinOptimization: true
 
+```
+INDEXED_NESTED_LOOP_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign2]
+  |  
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign2]
+  |  keyPattern: {  "b" : 1 }
+  |  indexName: "b_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  INDEXED_NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign1]
+  |  
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign1]
+  |  keyPattern: {  "a" : 1 }
+  |  indexName: "a_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  PROJECTION_SIMPLE
+  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ## 3. Example with two joins, suffix, and sub-pipeline with un-correlated $match
 ### No join opt
 ### Pipeline
@@ -2305,1357 +786,270 @@ Execution Engine: classic
 ```
 
 ### With bottom-up plan enumeration (left-deep)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$x.a"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "count" : 2 }
-{  "_id" : 2,  "count" : 2 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "39062D46AC66A096B98DB7B9AD3C198F432183DF3436553F59C3EC8B5252F1EA",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								},
-								{
-									"direction" : "forward",
-									"filter" : {
-										"d" : {
-											"$lt" : 3
-										}
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "COLLSCAN"
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "none",
-							"rightEmbeddingField" : "x",
-							"stage" : "HASH_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								"b" : {
-									"$gt" : "aaa"
-								}
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "y",
-					"stage" : "HASH_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$x.a",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  direction: "forward"
+  |
+  PROJECTION_SIMPLE
+  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (right-deep)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$x.a"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "count" : 2 }
-{  "_id" : 2,  "count" : 2 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "39062D46AC66A096B98DB7B9AD3C198F432183DF3436553F59C3EC8B5252F1EA",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"direction" : "forward",
-							"filter" : {
-								"b" : {
-									"$gt" : "aaa"
-								}
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "COLLSCAN"
-						},
-						{
-							"inputStages" : [
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								},
-								{
-									"direction" : "forward",
-									"filter" : {
-										"d" : {
-											"$lt" : 3
-										}
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "COLLSCAN"
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "none",
-							"rightEmbeddingField" : "x",
-							"stage" : "HASH_JOIN_EMBEDDING"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "y",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "none",
-					"stage" : "HASH_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$x.a",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "y"
+rightEmbeddingField: "none"
+  |  |
+  |  HASH_JOIN_EMBEDDING [a = a]
+  |  leftEmbeddingField: "none"
+  |  rightEmbeddingField: "x"
+  |  |  |
+  |  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  |  direction: "forward"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  filter: {  "b" : {  "$gt" : "aaa" } }
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (zig-zag)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$x.a"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "count" : 2 }
-{  "_id" : 2,  "count" : 2 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "39062D46AC66A096B98DB7B9AD3C198F432183DF3436553F59C3EC8B5252F1EA",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								},
-								{
-									"direction" : "forward",
-									"filter" : {
-										"d" : {
-											"$lt" : 3
-										}
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "COLLSCAN"
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "none",
-							"rightEmbeddingField" : "x",
-							"stage" : "HASH_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								"b" : {
-									"$gt" : "aaa"
-								}
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "y",
-					"stage" : "HASH_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$x.a",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  direction: "forward"
+  |
+  PROJECTION_SIMPLE
+  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ### With random order, seed 44, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$x.a"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "count" : 2 }
-{  "_id" : 2,  "count" : 2 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "39062D46AC66A096B98DB7B9AD3C198F432183DF3436553F59C3EC8B5252F1EA",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"direction" : "forward",
-									"filter" : {
-										"d" : {
-											"$lt" : 3
-										}
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "COLLSCAN"
-								},
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "x",
-							"rightEmbeddingField" : "none",
-							"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								"b" : {
-									"$gt" : "aaa"
-								}
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "y",
-					"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$x.a",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
+```
+NESTED_LOOP_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "x"
+  rightEmbeddingField: "none"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign1]
+  filter: {  "d" : {  "$lt" : 3 } }
+  direction: "forward"
+```
 ### With random order, seed 44, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$x.a"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "count" : 2 }
-{  "_id" : 2,  "count" : 2 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "39062D46AC66A096B98DB7B9AD3C198F432183DF3436553F59C3EC8B5252F1EA",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"direction" : "forward",
-									"filter" : {
-										"d" : {
-											"$lt" : 3
-										}
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "COLLSCAN"
-								},
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "x",
-							"rightEmbeddingField" : "none",
-							"stage" : "HASH_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								"b" : {
-									"$gt" : "aaa"
-								}
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "y",
-					"stage" : "HASH_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$x.a",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
-### With random order, seed 420, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$x.a"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 1,  "count" : 2 }
-{  "_id" : 2,  "count" : 2 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "39062D46AC66A096B98DB7B9AD3C198F432183DF3436553F59C3EC8B5252F1EA",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"direction" : "forward",
-									"filter" : {
-										"b" : {
-											"$gt" : "aaa"
-										}
-									},
-									"nss" : "test.basic_joins_md_foreign2",
-									"stage" : "COLLSCAN"
-								},
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								}
-							],
-							"joinPredicates" : [
-								"b = b"
-							],
-							"leftEmbeddingField" : "y",
-							"rightEmbeddingField" : "none",
-							"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								"d" : {
-									"$lt" : 3
-								}
-							},
-							"nss" : "test.basic_joins_md_foreign1",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"a = a"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "x",
-					"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$x.a",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "x"
+  rightEmbeddingField: "none"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign1]
+  filter: {  "d" : {  "$lt" : 3 } }
+  direction: "forward"
 ```
+### With random order, seed 45, nested loop joins
 usedJoinOptimization: true
 
-### With random order, seed 420, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$x.a"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 1,  "count" : 2 }
-{  "_id" : 2,  "count" : 2 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "39062D46AC66A096B98DB7B9AD3C198F432183DF3436553F59C3EC8B5252F1EA",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"direction" : "forward",
-									"filter" : {
-										"b" : {
-											"$gt" : "aaa"
-										}
-									},
-									"nss" : "test.basic_joins_md_foreign2",
-									"stage" : "COLLSCAN"
-								},
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								}
-							],
-							"joinPredicates" : [
-								"b = b"
-							],
-							"leftEmbeddingField" : "y",
-							"rightEmbeddingField" : "none",
-							"stage" : "HASH_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								"d" : {
-									"$lt" : 3
-								}
-							},
-							"nss" : "test.basic_joins_md_foreign1",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"a = a"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "x",
-					"stage" : "HASH_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$x.a",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
+HASH_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  filter: {  "b" : {  "$gt" : "aaa" } }
+  direction: "forward"
 ```
+### With random order, seed 45, hash join enabled
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  filter: {  "b" : {  "$gt" : "aaa" } }
+  direction: "forward"
+```
 ### With fixed order, index join
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$x.a"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "count" : 2 }
-{  "_id" : 2,  "count" : 2 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "39062D46AC66A096B98DB7B9AD3C198F432183DF3436553F59C3EC8B5252F1EA",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"indexBounds" : {
-											"b" : [
-												"(\"aaa\", {})"
-											]
-										},
-										"indexName" : "b_1",
-										"isMultiKey" : false,
-										"isPartial" : false,
-										"isSparse" : false,
-										"isUnique" : false,
-										"keyPattern" : {
-											"b" : 1
-										},
-										"multiKeyPaths" : {
-											"b" : [ ]
-										},
-										"nss" : "test.basic_joins_md_foreign2",
-										"stage" : "IXSCAN"
-									},
-									"nss" : "test.basic_joins_md_foreign2",
-									"stage" : "FETCH"
-								},
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								}
-							],
-							"joinPredicates" : [
-								"b = b"
-							],
-							"leftEmbeddingField" : "y",
-							"rightEmbeddingField" : "none",
-							"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-						},
-						{
-							"filter" : {
-								"d" : {
-									"$lt" : 3
-								}
-							},
-							"inputStage" : {
-								"indexName" : "a_1",
-								"isMultiKey" : false,
-								"isPartial" : false,
-								"isSparse" : false,
-								"isUnique" : false,
-								"keyPattern" : {
-									"a" : 1
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "INDEX_PROBE_NODE"
-							},
-							"nss" : "test.basic_joins_md_foreign1",
-							"stage" : "FETCH"
-						}
-					],
-					"joinPredicates" : [
-						"a = a"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 8,
-					"rightEmbeddingField" : "x",
-					"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$x.a",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
+```
+INDEXED_NESTED_LOOP_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign1]
+  |  keyPattern: {  "a" : 1 }
+  |  indexName: "a_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  FETCH [test.basic_joins_md_foreign2]
+  
+  |
+  IXSCAN [test.basic_joins_md_foreign2]
+  keyPattern: {  "b" : 1 }
+  indexName: "b_1"
+  isMultiKey: false
+  multiKeyPaths: {  "b" : [ ] }
+  isUnique: false
+  isSparse: false
+  isPartial: false
+  direction: "forward"
+  indexBounds: {  "b" : [ "(\"aaa\", {})" ] }
+```
 ### With bottom-up plan enumeration and indexes
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$x.a"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "count" : 2 }
-{  "_id" : 2,  "count" : 2 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "39062D46AC66A096B98DB7B9AD3C198F432183DF3436553F59C3EC8B5252F1EA",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								},
-								{
-									"filter" : {
-										"d" : {
-											"$lt" : 3
-										}
-									},
-									"inputStage" : {
-										"indexName" : "a_1",
-										"isMultiKey" : false,
-										"isPartial" : false,
-										"isSparse" : false,
-										"isUnique" : false,
-										"keyPattern" : {
-											"a" : 1
-										},
-										"nss" : "test.basic_joins_md_foreign1",
-										"stage" : "INDEX_PROBE_NODE"
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "FETCH"
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "none",
-							"rightEmbeddingField" : "x",
-							"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-						},
-						{
-							"filter" : {
-								"b" : {
-									"$gt" : "aaa"
-								}
-							},
-							"inputStage" : {
-								"indexName" : "b_1",
-								"isMultiKey" : false,
-								"isPartial" : false,
-								"isSparse" : false,
-								"isUnique" : false,
-								"keyPattern" : {
-									"b" : 1
-								},
-								"nss" : "test.basic_joins_md_foreign2",
-								"stage" : "INDEX_PROBE_NODE"
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "FETCH"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 8,
-					"rightEmbeddingField" : "y",
-					"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$x.a",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
+usedJoinOptimization: true
 
+```
+INDEXED_NESTED_LOOP_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign2]
+  |  keyPattern: {  "b" : 1 }
+  |  indexName: "b_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  INDEXED_NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign1]
+  |  keyPattern: {  "a" : 1 }
+  |  indexName: "a_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  PROJECTION_SIMPLE
+  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ## 4. Example with two joins and sub-pipeline with un-correlated $match
 ### No join opt
 ### Pipeline
@@ -3778,1060 +1172,243 @@ Execution Engine: classic
 ```
 
 ### With bottom-up plan enumeration (left-deep)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "6E1AD01BB023E5575DBF8997EA4E7E46A5BCCAA49D659AFD0AB18E0D1E797FF4",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							"d" : {
-								"$lt" : 3
-							}
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					"b" : {
-						"$gt" : "aaa"
-					}
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "y",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (right-deep)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "6E1AD01BB023E5575DBF8997EA4E7E46A5BCCAA49D659AFD0AB18E0D1E797FF4",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"direction" : "forward",
-				"filter" : {
-					"b" : {
-						"$gt" : "aaa"
-					}
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			},
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							"d" : {
-								"$lt" : 3
-							}
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "y",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "none",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "y"
+rightEmbeddingField: "none"
+  |  |
+  |  HASH_JOIN_EMBEDDING [a = a]
+  |  leftEmbeddingField: "none"
+  |  rightEmbeddingField: "x"
+  |  |  |
+  |  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  |  direction: "forward"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  filter: {  "b" : {  "$gt" : "aaa" } }
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (zig-zag)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "6E1AD01BB023E5575DBF8997EA4E7E46A5BCCAA49D659AFD0AB18E0D1E797FF4",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							"d" : {
-								"$lt" : 3
-							}
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					"b" : {
-						"$gt" : "aaa"
-					}
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "y",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ### With random order, seed 44, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "6E1AD01BB023E5575DBF8997EA4E7E46A5BCCAA49D659AFD0AB18E0D1E797FF4",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							"d" : {
-								"$lt" : 3
-							}
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "x",
-				"rightEmbeddingField" : "none",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					"b" : {
-						"$gt" : "aaa"
-					}
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "y",
-		"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+NESTED_LOOP_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "x"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign1]
+  filter: {  "d" : {  "$lt" : 3 } }
+  direction: "forward"
+```
 ### With random order, seed 44, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "6E1AD01BB023E5575DBF8997EA4E7E46A5BCCAA49D659AFD0AB18E0D1E797FF4",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							"d" : {
-								"$lt" : 3
-							}
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "x",
-				"rightEmbeddingField" : "none",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					"b" : {
-						"$gt" : "aaa"
-					}
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "y",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
-### With random order, seed 420, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "6E1AD01BB023E5575DBF8997EA4E7E46A5BCCAA49D659AFD0AB18E0D1E797FF4",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							"b" : {
-								"$gt" : "aaa"
-							}
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"b = b"
-				],
-				"leftEmbeddingField" : "y",
-				"rightEmbeddingField" : "none",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					"d" : {
-						"$lt" : 3
-					}
-				},
-				"nss" : "test.basic_joins_md_foreign1",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"a = a"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "x",
-		"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "x"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign1]
+  filter: {  "d" : {  "$lt" : 3 } }
+  direction: "forward"
 ```
+### With random order, seed 45, nested loop joins
 usedJoinOptimization: true
 
-### With random order, seed 420, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "6E1AD01BB023E5575DBF8997EA4E7E46A5BCCAA49D659AFD0AB18E0D1E797FF4",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							"b" : {
-								"$gt" : "aaa"
-							}
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"b = b"
-				],
-				"leftEmbeddingField" : "y",
-				"rightEmbeddingField" : "none",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					"d" : {
-						"$lt" : 3
-					}
-				},
-				"nss" : "test.basic_joins_md_foreign1",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"a = a"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "x",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
+HASH_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  filter: {  "b" : {  "$gt" : "aaa" } }
+  direction: "forward"
 ```
+### With random order, seed 45, hash join enabled
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  filter: {  "b" : {  "$gt" : "aaa" } }
+  direction: "forward"
+```
 ### With fixed order, index join
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "6E1AD01BB023E5575DBF8997EA4E7E46A5BCCAA49D659AFD0AB18E0D1E797FF4",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStage" : {
-							"direction" : "forward",
-							"indexBounds" : {
-								"b" : [
-									"(\"aaa\", {})"
-								]
-							},
-							"indexName" : "b_1",
-							"isMultiKey" : false,
-							"isPartial" : false,
-							"isSparse" : false,
-							"isUnique" : false,
-							"keyPattern" : {
-								"b" : 1
-							},
-							"multiKeyPaths" : {
-								"b" : [ ]
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "IXSCAN"
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "FETCH"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"b = b"
-				],
-				"leftEmbeddingField" : "y",
-				"rightEmbeddingField" : "none",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"filter" : {
-					"d" : {
-						"$lt" : 3
-					}
-				},
-				"inputStage" : {
-					"indexName" : "a_1",
-					"isMultiKey" : false,
-					"isPartial" : false,
-					"isSparse" : false,
-					"isUnique" : false,
-					"keyPattern" : {
-						"a" : 1
-					},
-					"nss" : "test.basic_joins_md_foreign1",
-					"stage" : "INDEX_PROBE_NODE"
-				},
-				"nss" : "test.basic_joins_md_foreign1",
-				"stage" : "FETCH"
-			}
-		],
-		"joinPredicates" : [
-			"a = a"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "x",
-		"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+INDEXED_NESTED_LOOP_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign1]
+  |  keyPattern: {  "a" : 1 }
+  |  indexName: "a_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  FETCH [test.basic_joins_md_foreign2]
+  
+  |
+  IXSCAN [test.basic_joins_md_foreign2]
+  keyPattern: {  "b" : 1 }
+  indexName: "b_1"
+  isMultiKey: false
+  multiKeyPaths: {  "b" : [ ] }
+  isUnique: false
+  isSparse: false
+  isPartial: false
+  direction: "forward"
+  indexBounds: {  "b" : [ "(\"aaa\", {})" ] }
+```
 ### With bottom-up plan enumeration and indexes
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "6E1AD01BB023E5575DBF8997EA4E7E46A5BCCAA49D659AFD0AB18E0D1E797FF4",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"filter" : {
-							"d" : {
-								"$lt" : 3
-							}
-						},
-						"inputStage" : {
-							"indexName" : "a_1",
-							"isMultiKey" : false,
-							"isPartial" : false,
-							"isSparse" : false,
-							"isUnique" : false,
-							"keyPattern" : {
-								"a" : 1
-							},
-							"nss" : "test.basic_joins_md_foreign1",
-							"stage" : "INDEX_PROBE_NODE"
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "FETCH"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"filter" : {
-					"b" : {
-						"$gt" : "aaa"
-					}
-				},
-				"inputStage" : {
-					"indexName" : "b_1",
-					"isMultiKey" : false,
-					"isPartial" : false,
-					"isSparse" : false,
-					"isUnique" : false,
-					"keyPattern" : {
-						"b" : 1
-					},
-					"nss" : "test.basic_joins_md_foreign2",
-					"stage" : "INDEX_PROBE_NODE"
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "FETCH"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "y",
-		"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
-```
+usedJoinOptimization: true
 
+```
+INDEXED_NESTED_LOOP_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign2]
+  |  keyPattern: {  "b" : 1 }
+  |  indexName: "b_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  INDEXED_NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign1]
+  |  keyPattern: {  "a" : 1 }
+  |  indexName: "a_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ## 5. Example with two joins, suffix, and sub-pipeline with un-correlated $match and $match prefix
 ### No join opt
 ### Pipeline
@@ -4992,1429 +1569,279 @@ Execution Engine: classic
 ```
 
 ### With bottom-up plan enumeration (left-deep)
-### Pipeline
-```json
-[
-	{
-		"$match" : {
-			"a" : {
-				"$gt" : 1
-			}
-		}
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$x.a"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "count" : 2 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "7D59BE511C0D33652DB26A61DFFA0D36F47580971FB97DF9C3C4BC3A3F52F932",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											"a" : {
-												"$gt" : 1
-											}
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								},
-								{
-									"direction" : "forward",
-									"filter" : {
-										"d" : {
-											"$lt" : 3
-										}
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "COLLSCAN"
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "none",
-							"rightEmbeddingField" : "x",
-							"stage" : "HASH_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								"b" : {
-									"$gt" : "aaa"
-								}
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "y",
-					"stage" : "HASH_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$x.a",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  direction: "forward"
+  |
+  PROJECTION_SIMPLE
+  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |
+  COLLSCAN [test.basic_joins_md]
+  filter: {  "a" : {  "$gt" : 1 } }
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (right-deep)
-### Pipeline
-```json
-[
-	{
-		"$match" : {
-			"a" : {
-				"$gt" : 1
-			}
-		}
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$x.a"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "count" : 2 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "7D59BE511C0D33652DB26A61DFFA0D36F47580971FB97DF9C3C4BC3A3F52F932",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"direction" : "forward",
-							"filter" : {
-								"b" : {
-									"$gt" : "aaa"
-								}
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "COLLSCAN"
-						},
-						{
-							"inputStages" : [
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											"a" : {
-												"$gt" : 1
-											}
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								},
-								{
-									"direction" : "forward",
-									"filter" : {
-										"d" : {
-											"$lt" : 3
-										}
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "COLLSCAN"
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "none",
-							"rightEmbeddingField" : "x",
-							"stage" : "HASH_JOIN_EMBEDDING"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "y",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "none",
-					"stage" : "HASH_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$x.a",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "y"
+rightEmbeddingField: "none"
+  |  |
+  |  HASH_JOIN_EMBEDDING [a = a]
+  |  leftEmbeddingField: "none"
+  |  rightEmbeddingField: "x"
+  |  |  |
+  |  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  |  direction: "forward"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  filter: {  "a" : {  "$gt" : 1 } }
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  filter: {  "b" : {  "$gt" : "aaa" } }
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (zig-zag)
-### Pipeline
-```json
-[
-	{
-		"$match" : {
-			"a" : {
-				"$gt" : 1
-			}
-		}
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$x.a"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "count" : 2 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "7D59BE511C0D33652DB26A61DFFA0D36F47580971FB97DF9C3C4BC3A3F52F932",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											"a" : {
-												"$gt" : 1
-											}
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								},
-								{
-									"direction" : "forward",
-									"filter" : {
-										"d" : {
-											"$lt" : 3
-										}
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "COLLSCAN"
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "none",
-							"rightEmbeddingField" : "x",
-							"stage" : "HASH_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								"b" : {
-									"$gt" : "aaa"
-								}
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "y",
-					"stage" : "HASH_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$x.a",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  direction: "forward"
+  |
+  PROJECTION_SIMPLE
+  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |
+  COLLSCAN [test.basic_joins_md]
+  filter: {  "a" : {  "$gt" : 1 } }
+  direction: "forward"
+```
 ### With random order, seed 44, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$match" : {
-			"a" : {
-				"$gt" : 1
-			}
-		}
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$x.a"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "count" : 2 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "7D59BE511C0D33652DB26A61DFFA0D36F47580971FB97DF9C3C4BC3A3F52F932",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"direction" : "forward",
-									"filter" : {
-										"d" : {
-											"$lt" : 3
-										}
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "COLLSCAN"
-								},
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											"a" : {
-												"$gt" : 1
-											}
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "x",
-							"rightEmbeddingField" : "none",
-							"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								"b" : {
-									"$gt" : "aaa"
-								}
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "y",
-					"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$x.a",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
+```
+NESTED_LOOP_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "x"
+  rightEmbeddingField: "none"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  filter: {  "a" : {  "$gt" : 1 } }
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign1]
+  filter: {  "d" : {  "$lt" : 3 } }
+  direction: "forward"
+```
 ### With random order, seed 44, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$match" : {
-			"a" : {
-				"$gt" : 1
-			}
-		}
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$x.a"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "count" : 2 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "7D59BE511C0D33652DB26A61DFFA0D36F47580971FB97DF9C3C4BC3A3F52F932",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"direction" : "forward",
-									"filter" : {
-										"d" : {
-											"$lt" : 3
-										}
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "COLLSCAN"
-								},
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											"a" : {
-												"$gt" : 1
-											}
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "x",
-							"rightEmbeddingField" : "none",
-							"stage" : "HASH_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								"b" : {
-									"$gt" : "aaa"
-								}
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "y",
-					"stage" : "HASH_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$x.a",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
-### With random order, seed 420, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$match" : {
-			"a" : {
-				"$gt" : 1
-			}
-		}
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$x.a"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 2,  "count" : 2 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "7D59BE511C0D33652DB26A61DFFA0D36F47580971FB97DF9C3C4BC3A3F52F932",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"direction" : "forward",
-									"filter" : {
-										"b" : {
-											"$gt" : "aaa"
-										}
-									},
-									"nss" : "test.basic_joins_md_foreign2",
-									"stage" : "COLLSCAN"
-								},
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											"a" : {
-												"$gt" : 1
-											}
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								}
-							],
-							"joinPredicates" : [
-								"b = b"
-							],
-							"leftEmbeddingField" : "y",
-							"rightEmbeddingField" : "none",
-							"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								"d" : {
-									"$lt" : 3
-								}
-							},
-							"nss" : "test.basic_joins_md_foreign1",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"a = a"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "x",
-					"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$x.a",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "x"
+  rightEmbeddingField: "none"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  filter: {  "a" : {  "$gt" : 1 } }
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign1]
+  filter: {  "d" : {  "$lt" : 3 } }
+  direction: "forward"
 ```
+### With random order, seed 45, nested loop joins
 usedJoinOptimization: true
 
-### With random order, seed 420, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$match" : {
-			"a" : {
-				"$gt" : 1
-			}
-		}
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$x.a"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 2,  "count" : 2 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "7D59BE511C0D33652DB26A61DFFA0D36F47580971FB97DF9C3C4BC3A3F52F932",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"direction" : "forward",
-									"filter" : {
-										"b" : {
-											"$gt" : "aaa"
-										}
-									},
-									"nss" : "test.basic_joins_md_foreign2",
-									"stage" : "COLLSCAN"
-								},
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											"a" : {
-												"$gt" : 1
-											}
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								}
-							],
-							"joinPredicates" : [
-								"b = b"
-							],
-							"leftEmbeddingField" : "y",
-							"rightEmbeddingField" : "none",
-							"stage" : "HASH_JOIN_EMBEDDING"
-						},
-						{
-							"direction" : "forward",
-							"filter" : {
-								"d" : {
-									"$lt" : 3
-								}
-							},
-							"nss" : "test.basic_joins_md_foreign1",
-							"stage" : "COLLSCAN"
-						}
-					],
-					"joinPredicates" : [
-						"a = a"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 6,
-					"rightEmbeddingField" : "x",
-					"stage" : "HASH_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$x.a",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
+HASH_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  filter: {  "a" : {  "$gt" : 1 } }
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  filter: {  "b" : {  "$gt" : "aaa" } }
+  direction: "forward"
 ```
+### With random order, seed 45, hash join enabled
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  filter: {  "a" : {  "$gt" : 1 } }
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  filter: {  "b" : {  "$gt" : "aaa" } }
+  direction: "forward"
+```
 ### With fixed order, index join
-### Pipeline
-```json
-[
-	{
-		"$match" : {
-			"a" : {
-				"$gt" : 1
-			}
-		}
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$x.a"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "count" : 2 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "7D59BE511C0D33652DB26A61DFFA0D36F47580971FB97DF9C3C4BC3A3F52F932",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"indexBounds" : {
-											"b" : [
-												"(\"aaa\", {})"
-											]
-										},
-										"indexName" : "b_1",
-										"isMultiKey" : false,
-										"isPartial" : false,
-										"isSparse" : false,
-										"isUnique" : false,
-										"keyPattern" : {
-											"b" : 1
-										},
-										"multiKeyPaths" : {
-											"b" : [ ]
-										},
-										"nss" : "test.basic_joins_md_foreign2",
-										"stage" : "IXSCAN"
-									},
-									"nss" : "test.basic_joins_md_foreign2",
-									"stage" : "FETCH"
-								},
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											"a" : {
-												"$gt" : 1
-											}
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								}
-							],
-							"joinPredicates" : [
-								"b = b"
-							],
-							"leftEmbeddingField" : "y",
-							"rightEmbeddingField" : "none",
-							"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-						},
-						{
-							"filter" : {
-								"d" : {
-									"$lt" : 3
-								}
-							},
-							"inputStage" : {
-								"indexName" : "a_1",
-								"isMultiKey" : false,
-								"isPartial" : false,
-								"isSparse" : false,
-								"isUnique" : false,
-								"keyPattern" : {
-									"a" : 1
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "INDEX_PROBE_NODE"
-							},
-							"nss" : "test.basic_joins_md_foreign1",
-							"stage" : "FETCH"
-						}
-					],
-					"joinPredicates" : [
-						"a = a"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 8,
-					"rightEmbeddingField" : "x",
-					"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$x.a",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
 usedJoinOptimization: true
 
+```
+INDEXED_NESTED_LOOP_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign1]
+  |  keyPattern: {  "a" : 1 }
+  |  indexName: "a_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  PROJECTION_SIMPLE
+  |  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  filter: {  "a" : {  "$gt" : 1 } }
+  |  direction: "forward"
+  |
+  FETCH [test.basic_joins_md_foreign2]
+  
+  |
+  IXSCAN [test.basic_joins_md_foreign2]
+  keyPattern: {  "b" : 1 }
+  indexName: "b_1"
+  isMultiKey: false
+  multiKeyPaths: {  "b" : [ ] }
+  isUnique: false
+  isSparse: false
+  isPartial: false
+  direction: "forward"
+  indexBounds: {  "b" : [ "(\"aaa\", {})" ] }
+```
 ### With bottom-up plan enumeration and indexes
-### Pipeline
-```json
-[
-	{
-		"$match" : {
-			"a" : {
-				"$gt" : 1
-			}
-		}
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$sortByCount" : "$x.a"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "count" : 2 }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "7D59BE511C0D33652DB26A61DFFA0D36F47580971FB97DF9C3C4BC3A3F52F932",
-	"stages" : [
-		{
-			"$cursor" : {
-				"rejectedPlans" : [ ],
-				"winningPlan" : {
-					"inputStages" : [
-						{
-							"inputStages" : [
-								{
-									"inputStage" : {
-										"direction" : "forward",
-										"filter" : {
-											"a" : {
-												"$gt" : 1
-											}
-										},
-										"nss" : "test.basic_joins_md",
-										"stage" : "COLLSCAN"
-									},
-									"stage" : "PROJECTION_SIMPLE",
-									"transformBy" : {
-										"_id" : false,
-										"a" : true,
-										"b" : true
-									}
-								},
-								{
-									"filter" : {
-										"d" : {
-											"$lt" : 3
-										}
-									},
-									"inputStage" : {
-										"indexName" : "a_1",
-										"isMultiKey" : false,
-										"isPartial" : false,
-										"isSparse" : false,
-										"isUnique" : false,
-										"keyPattern" : {
-											"a" : 1
-										},
-										"nss" : "test.basic_joins_md_foreign1",
-										"stage" : "INDEX_PROBE_NODE"
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "FETCH"
-								}
-							],
-							"joinPredicates" : [
-								"a = a"
-							],
-							"leftEmbeddingField" : "none",
-							"rightEmbeddingField" : "x",
-							"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-						},
-						{
-							"filter" : {
-								"b" : {
-									"$gt" : "aaa"
-								}
-							},
-							"inputStage" : {
-								"indexName" : "b_1",
-								"isMultiKey" : false,
-								"isPartial" : false,
-								"isSparse" : false,
-								"isUnique" : false,
-								"keyPattern" : {
-									"b" : 1
-								},
-								"nss" : "test.basic_joins_md_foreign2",
-								"stage" : "INDEX_PROBE_NODE"
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "FETCH"
-						}
-					],
-					"joinPredicates" : [
-						"b = b"
-					],
-					"leftEmbeddingField" : "none",
-					"planNodeId" : 8,
-					"rightEmbeddingField" : "y",
-					"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-				}
-			}
-		},
-		{
-			"$group" : {
-				"$willBeMerged" : false,
-				"_id" : "$x.a",
-				"count" : {
-					"$sum" : {
-						"$const" : 1
-					}
-				}
-			}
-		},
-		{
-			"$sort" : {
-				"sortKey" : {
-					"count" : -1
-				}
-			}
-		}
-	]
-}
-```
+usedJoinOptimization: true
 
+```
+INDEXED_NESTED_LOOP_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign2]
+  |  keyPattern: {  "b" : 1 }
+  |  indexName: "b_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  INDEXED_NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign1]
+  |  keyPattern: {  "a" : 1 }
+  |  indexName: "a_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  PROJECTION_SIMPLE
+  transformBy: {  "a" : true,  "b" : true,  "_id" : false }
+  |
+  COLLSCAN [test.basic_joins_md]
+  filter: {  "a" : {  "$gt" : 1 } }
+  direction: "forward"
+```
 ## 6. Example with two joins and sub-pipeline with un-correlated $match and $match prefix
 ### No join opt
 ### Pipeline
@@ -6547,1123 +1974,252 @@ Execution Engine: classic
 ```
 
 ### With bottom-up plan enumeration (left-deep)
-### Pipeline
-```json
-[
-	{
-		"$match" : {
-			"a" : {
-				"$gt" : 1
-			}
-		}
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "D2D2550CF530351E25FFDB1BB9DBD96DD0CE98C0FA4082BADF1F9BC9F7579A03",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							"a" : {
-								"$gt" : 1
-							}
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							"d" : {
-								"$lt" : 3
-							}
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					"b" : {
-						"$gt" : "aaa"
-					}
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "y",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md]
+  filter: {  "a" : {  "$gt" : 1 } }
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (right-deep)
-### Pipeline
-```json
-[
-	{
-		"$match" : {
-			"a" : {
-				"$gt" : 1
-			}
-		}
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "D2D2550CF530351E25FFDB1BB9DBD96DD0CE98C0FA4082BADF1F9BC9F7579A03",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"direction" : "forward",
-				"filter" : {
-					"b" : {
-						"$gt" : "aaa"
-					}
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			},
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							"a" : {
-								"$gt" : 1
-							}
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							"d" : {
-								"$lt" : 3
-							}
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "y",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "none",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "y"
+rightEmbeddingField: "none"
+  |  |
+  |  HASH_JOIN_EMBEDDING [a = a]
+  |  leftEmbeddingField: "none"
+  |  rightEmbeddingField: "x"
+  |  |  |
+  |  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  |  direction: "forward"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  filter: {  "a" : {  "$gt" : 1 } }
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  filter: {  "b" : {  "$gt" : "aaa" } }
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (zig-zag)
-### Pipeline
-```json
-[
-	{
-		"$match" : {
-			"a" : {
-				"$gt" : 1
-			}
-		}
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "D2D2550CF530351E25FFDB1BB9DBD96DD0CE98C0FA4082BADF1F9BC9F7579A03",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							"a" : {
-								"$gt" : 1
-							}
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							"d" : {
-								"$lt" : 3
-							}
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					"b" : {
-						"$gt" : "aaa"
-					}
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "y",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md]
+  filter: {  "a" : {  "$gt" : 1 } }
+  direction: "forward"
+```
 ### With random order, seed 44, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$match" : {
-			"a" : {
-				"$gt" : 1
-			}
-		}
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "D2D2550CF530351E25FFDB1BB9DBD96DD0CE98C0FA4082BADF1F9BC9F7579A03",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							"d" : {
-								"$lt" : 3
-							}
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							"a" : {
-								"$gt" : 1
-							}
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "x",
-				"rightEmbeddingField" : "none",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					"b" : {
-						"$gt" : "aaa"
-					}
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "y",
-		"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+NESTED_LOOP_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "x"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  filter: {  "a" : {  "$gt" : 1 } }
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign1]
+  filter: {  "d" : {  "$lt" : 3 } }
+  direction: "forward"
+```
 ### With random order, seed 44, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$match" : {
-			"a" : {
-				"$gt" : 1
-			}
-		}
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "D2D2550CF530351E25FFDB1BB9DBD96DD0CE98C0FA4082BADF1F9BC9F7579A03",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							"d" : {
-								"$lt" : 3
-							}
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							"a" : {
-								"$gt" : 1
-							}
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "x",
-				"rightEmbeddingField" : "none",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					"b" : {
-						"$gt" : "aaa"
-					}
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "y",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
-### With random order, seed 420, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$match" : {
-			"a" : {
-				"$gt" : 1
-			}
-		}
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "D2D2550CF530351E25FFDB1BB9DBD96DD0CE98C0FA4082BADF1F9BC9F7579A03",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							"b" : {
-								"$gt" : "aaa"
-							}
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							"a" : {
-								"$gt" : 1
-							}
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"b = b"
-				],
-				"leftEmbeddingField" : "y",
-				"rightEmbeddingField" : "none",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					"d" : {
-						"$lt" : 3
-					}
-				},
-				"nss" : "test.basic_joins_md_foreign1",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"a = a"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "x",
-		"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "x"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  filter: {  "a" : {  "$gt" : 1 } }
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign1]
+  filter: {  "d" : {  "$lt" : 3 } }
+  direction: "forward"
 ```
+### With random order, seed 45, nested loop joins
 usedJoinOptimization: true
 
-### With random order, seed 420, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$match" : {
-			"a" : {
-				"$gt" : 1
-			}
-		}
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "D2D2550CF530351E25FFDB1BB9DBD96DD0CE98C0FA4082BADF1F9BC9F7579A03",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							"b" : {
-								"$gt" : "aaa"
-							}
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							"a" : {
-								"$gt" : 1
-							}
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"b = b"
-				],
-				"leftEmbeddingField" : "y",
-				"rightEmbeddingField" : "none",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					"d" : {
-						"$lt" : 3
-					}
-				},
-				"nss" : "test.basic_joins_md_foreign1",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"a = a"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "x",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
+HASH_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  filter: {  "a" : {  "$gt" : 1 } }
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  filter: {  "b" : {  "$gt" : "aaa" } }
+  direction: "forward"
 ```
+### With random order, seed 45, hash join enabled
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  filter: {  "a" : {  "$gt" : 1 } }
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  filter: {  "b" : {  "$gt" : "aaa" } }
+  direction: "forward"
+```
 ### With fixed order, index join
-### Pipeline
-```json
-[
-	{
-		"$match" : {
-			"a" : {
-				"$gt" : 1
-			}
-		}
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "D2D2550CF530351E25FFDB1BB9DBD96DD0CE98C0FA4082BADF1F9BC9F7579A03",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStage" : {
-							"direction" : "forward",
-							"indexBounds" : {
-								"b" : [
-									"(\"aaa\", {})"
-								]
-							},
-							"indexName" : "b_1",
-							"isMultiKey" : false,
-							"isPartial" : false,
-							"isSparse" : false,
-							"isUnique" : false,
-							"keyPattern" : {
-								"b" : 1
-							},
-							"multiKeyPaths" : {
-								"b" : [ ]
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "IXSCAN"
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "FETCH"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							"a" : {
-								"$gt" : 1
-							}
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"b = b"
-				],
-				"leftEmbeddingField" : "y",
-				"rightEmbeddingField" : "none",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"filter" : {
-					"d" : {
-						"$lt" : 3
-					}
-				},
-				"inputStage" : {
-					"indexName" : "a_1",
-					"isMultiKey" : false,
-					"isPartial" : false,
-					"isSparse" : false,
-					"isUnique" : false,
-					"keyPattern" : {
-						"a" : 1
-					},
-					"nss" : "test.basic_joins_md_foreign1",
-					"stage" : "INDEX_PROBE_NODE"
-				},
-				"nss" : "test.basic_joins_md_foreign1",
-				"stage" : "FETCH"
-			}
-		],
-		"joinPredicates" : [
-			"a = a"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "x",
-		"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+INDEXED_NESTED_LOOP_JOIN_EMBEDDING [a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "x"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign1]
+  |  keyPattern: {  "a" : 1 }
+  |  indexName: "a_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "y"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  filter: {  "a" : {  "$gt" : 1 } }
+  |  direction: "forward"
+  |
+  FETCH [test.basic_joins_md_foreign2]
+  
+  |
+  IXSCAN [test.basic_joins_md_foreign2]
+  keyPattern: {  "b" : 1 }
+  indexName: "b_1"
+  isMultiKey: false
+  multiKeyPaths: {  "b" : [ ] }
+  isUnique: false
+  isSparse: false
+  isPartial: false
+  direction: "forward"
+  indexBounds: {  "b" : [ "(\"aaa\", {})" ] }
+```
 ### With bottom-up plan enumeration and indexes
-### Pipeline
-```json
-[
-	{
-		"$match" : {
-			"a" : {
-				"$gt" : 1
-			}
-		}
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a",
-			"pipeline" : [
-				{
-					"$match" : {
-						"d" : {
-							"$lt" : 3
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b",
-			"pipeline" : [
-				{
-					"$match" : {
-						"b" : {
-							"$gt" : "aaa"
-						}
-					}
-				}
-			]
-		}
-	},
-	{
-		"$unwind" : "$y"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "D2D2550CF530351E25FFDB1BB9DBD96DD0CE98C0FA4082BADF1F9BC9F7579A03",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							"a" : {
-								"$gt" : 1
-							}
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"filter" : {
-							"d" : {
-								"$lt" : 3
-							}
-						},
-						"inputStage" : {
-							"indexName" : "a_1",
-							"isMultiKey" : false,
-							"isPartial" : false,
-							"isSparse" : false,
-							"isUnique" : false,
-							"keyPattern" : {
-								"a" : 1
-							},
-							"nss" : "test.basic_joins_md_foreign1",
-							"stage" : "INDEX_PROBE_NODE"
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "FETCH"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"filter" : {
-					"b" : {
-						"$gt" : "aaa"
-					}
-				},
-				"inputStage" : {
-					"indexName" : "b_1",
-					"isMultiKey" : false,
-					"isPartial" : false,
-					"isSparse" : false,
-					"isUnique" : false,
-					"keyPattern" : {
-						"b" : 1
-					},
-					"nss" : "test.basic_joins_md_foreign2",
-					"stage" : "INDEX_PROBE_NODE"
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "FETCH"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "y",
-		"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
-```
+usedJoinOptimization: true
 
+```
+INDEXED_NESTED_LOOP_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign2]
+  |  filter: {  "b" : {  "$gt" : "aaa" } }
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign2]
+  |  keyPattern: {  "b" : 1 }
+  |  indexName: "b_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  INDEXED_NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign1]
+  |  filter: {  "d" : {  "$lt" : 3 } }
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign1]
+  |  keyPattern: {  "a" : 1 }
+  |  indexName: "a_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  COLLSCAN [test.basic_joins_md]
+  filter: {  "a" : {  "$gt" : 1 } }
+  direction: "forward"
+```
 ## 7. Basic example with referencing field from previous lookup
 ### No join opt
 ### Pipeline
@@ -7744,822 +2300,202 @@ Execution Engine: classic
 ```
 
 ### With bottom-up plan enumeration (left-deep)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 0,  "a" : 1,  "b" : "foo",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DC5CAF413E9B6B8B5E8B2D3FB91E4D546524BF2707BBE30472D5CA8E12F6637E",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign3",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"x.c = c"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "z",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [x.c = c]
+leftEmbeddingField: "none"
+rightEmbeddingField: "z"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (right-deep)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 0,  "a" : 1,  "b" : "foo",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DC5CAF413E9B6B8B5E8B2D3FB91E4D546524BF2707BBE30472D5CA8E12F6637E",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign3",
-				"stage" : "COLLSCAN"
-			},
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			}
-		],
-		"joinPredicates" : [
-			"c = x.c"
-		],
-		"leftEmbeddingField" : "z",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "none",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [c = x.c]
+leftEmbeddingField: "z"
+rightEmbeddingField: "none"
+  |  |
+  |  HASH_JOIN_EMBEDDING [a = a]
+  |  leftEmbeddingField: "none"
+  |  rightEmbeddingField: "x"
+  |  |  |
+  |  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  |  direction: "forward"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign3]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (zig-zag)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 0,  "a" : 1,  "b" : "foo",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DC5CAF413E9B6B8B5E8B2D3FB91E4D546524BF2707BBE30472D5CA8E12F6637E",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign3",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"x.c = c"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "z",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [x.c = c]
+leftEmbeddingField: "none"
+rightEmbeddingField: "z"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ### With random order, seed 44, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 0,  "a" : 1,  "b" : "foo",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DC5CAF413E9B6B8B5E8B2D3FB91E4D546524BF2707BBE30472D5CA8E12F6637E",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "x",
-				"rightEmbeddingField" : "none",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign3",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"x.c = c"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "z",
-		"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+NESTED_LOOP_JOIN_EMBEDDING [x.c = c]
+leftEmbeddingField: "none"
+rightEmbeddingField: "z"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "x"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign1]
+  direction: "forward"
+```
 ### With random order, seed 44, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 0,  "a" : 1,  "b" : "foo",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DC5CAF413E9B6B8B5E8B2D3FB91E4D546524BF2707BBE30472D5CA8E12F6637E",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "x",
-				"rightEmbeddingField" : "none",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign3",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"x.c = c"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "z",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
-### With random order, seed 420, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 0,  "a" : 1,  "b" : "foo",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DC5CAF413E9B6B8B5E8B2D3FB91E4D546524BF2707BBE30472D5CA8E12F6637E",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign3",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"c = c"
-				],
-				"leftEmbeddingField" : "z",
-				"rightEmbeddingField" : "x",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"x.a = a"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "none",
-		"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
+HASH_JOIN_EMBEDDING [x.c = c]
+leftEmbeddingField: "none"
+rightEmbeddingField: "z"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "x"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign1]
+  direction: "forward"
 ```
+### With random order, seed 45, nested loop joins
 usedJoinOptimization: true
 
-### With random order, seed 420, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 0,  "a" : 1,  "b" : "foo",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DC5CAF413E9B6B8B5E8B2D3FB91E4D546524BF2707BBE30472D5CA8E12F6637E",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign3",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"c = c"
-				],
-				"leftEmbeddingField" : "z",
-				"rightEmbeddingField" : "x",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"x.a = a"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "none",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
+HASH_JOIN_EMBEDDING [x.a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [c = c]
+  leftEmbeddingField: "z"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign3]
+  direction: "forward"
 ```
+### With random order, seed 45, hash join enabled
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [x.a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [c = c]
+  leftEmbeddingField: "z"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign3]
+  direction: "forward"
+```
 ### With fixed order, index join
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 0,  "a" : 1,  "b" : "foo",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DC5CAF413E9B6B8B5E8B2D3FB91E4D546524BF2707BBE30472D5CA8E12F6637E",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign3",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"c = c"
-				],
-				"leftEmbeddingField" : "z",
-				"rightEmbeddingField" : "x",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"x.a = a"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 5,
-		"rightEmbeddingField" : "none",
-		"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+NESTED_LOOP_JOIN_EMBEDDING [x.a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [c = c]
+  leftEmbeddingField: "z"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign3]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration and indexes
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 0,  "a" : 1,  "b" : "foo",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DC5CAF413E9B6B8B5E8B2D3FB91E4D546524BF2707BBE30472D5CA8E12F6637E",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"inputStage" : {
-							"indexName" : "a_1",
-							"isMultiKey" : false,
-							"isPartial" : false,
-							"isSparse" : false,
-							"isUnique" : false,
-							"keyPattern" : {
-								"a" : 1
-							},
-							"nss" : "test.basic_joins_md_foreign1",
-							"stage" : "INDEX_PROBE_NODE"
-						},
-						"nss" : "test.basic_joins_md_foreign1",
-						"stage" : "FETCH"
-					}
-				],
-				"joinPredicates" : [
-					"a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "x",
-				"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign3",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"x.c = c"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 6,
-		"rightEmbeddingField" : "z",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
+usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [x.c = c]
+leftEmbeddingField: "none"
+rightEmbeddingField: "z"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  INDEXED_NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign1]
+  |  
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign1]
+  |  keyPattern: {  "a" : 1 }
+  |  indexName: "a_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ## 8. Basic example with 3 joins & subsequent join referencing fields from previous lookups
 ### No join opt
 ### Pipeline
@@ -8664,1117 +2600,281 @@ Execution Engine: classic
 ```
 
 ### With bottom-up plan enumeration (left-deep)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DD24FFAE1F16C6C1F5B03939E0C642A797120A2585058C72554C9649BEA427AB",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"a = a"
-						],
-						"leftEmbeddingField" : "none",
-						"rightEmbeddingField" : "x",
-						"stage" : "HASH_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"b = b"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "y",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign3",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"x.c = c"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "z",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [x.c = c]
+leftEmbeddingField: "none"
+rightEmbeddingField: "z"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (right-deep)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DD24FFAE1F16C6C1F5B03939E0C642A797120A2585058C72554C9649BEA427AB",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign3",
-				"stage" : "COLLSCAN"
-			},
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"a = a"
-						],
-						"leftEmbeddingField" : "none",
-						"rightEmbeddingField" : "x",
-						"stage" : "HASH_JOIN_EMBEDDING"
-					}
-				],
-				"joinPredicates" : [
-					"b = b"
-				],
-				"leftEmbeddingField" : "y",
-				"rightEmbeddingField" : "none",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			}
-		],
-		"joinPredicates" : [
-			"c = x.c"
-		],
-		"leftEmbeddingField" : "z",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "none",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [c = x.c]
+leftEmbeddingField: "z"
+rightEmbeddingField: "none"
+  |  |
+  |  HASH_JOIN_EMBEDDING [b = b]
+  |  leftEmbeddingField: "y"
+  |  rightEmbeddingField: "none"
+  |  |  |
+  |  |  HASH_JOIN_EMBEDDING [a = a]
+  |  |  leftEmbeddingField: "none"
+  |  |  rightEmbeddingField: "x"
+  |  |  |  |
+  |  |  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  |  |  direction: "forward"
+  |  |  |
+  |  |  COLLSCAN [test.basic_joins_md]
+  |  |  direction: "forward"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign3]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (zig-zag)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DD24FFAE1F16C6C1F5B03939E0C642A797120A2585058C72554C9649BEA427AB",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign3",
-				"stage" : "COLLSCAN"
-			},
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"a = a"
-						],
-						"leftEmbeddingField" : "none",
-						"rightEmbeddingField" : "x",
-						"stage" : "HASH_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"b = b"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "y",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			}
-		],
-		"joinPredicates" : [
-			"c = x.c"
-		],
-		"leftEmbeddingField" : "z",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "none",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [c = x.c]
+leftEmbeddingField: "z"
+rightEmbeddingField: "none"
+  |  |
+  |  HASH_JOIN_EMBEDDING [b = b]
+  |  leftEmbeddingField: "none"
+  |  rightEmbeddingField: "y"
+  |  |  |
+  |  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  |  direction: "forward"
+  |  |
+  |  HASH_JOIN_EMBEDDING [a = a]
+  |  leftEmbeddingField: "none"
+  |  rightEmbeddingField: "x"
+  |  |  |
+  |  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  |  direction: "forward"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign3]
+  direction: "forward"
+```
 ### With random order, seed 44, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DD24FFAE1F16C6C1F5B03939E0C642A797120A2585058C72554C9649BEA427AB",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"a = a"
-						],
-						"leftEmbeddingField" : "none",
-						"rightEmbeddingField" : "x",
-						"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign3",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"x.c = c"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "z",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "y",
-		"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+NESTED_LOOP_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [x.c = c]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "z"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ### With random order, seed 44, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DD24FFAE1F16C6C1F5B03939E0C642A797120A2585058C72554C9649BEA427AB",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"a = a"
-						],
-						"leftEmbeddingField" : "none",
-						"rightEmbeddingField" : "x",
-						"stage" : "HASH_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign3",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"x.c = c"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "z",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "y",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
-### With random order, seed 420, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DD24FFAE1F16C6C1F5B03939E0C642A797120A2585058C72554C9649BEA427AB",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign3",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"c = c"
-						],
-						"leftEmbeddingField" : "x",
-						"rightEmbeddingField" : "z",
-						"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"x.a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "none",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "y",
-		"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [x.c = c]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "z"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
 ```
+### With random order, seed 45, nested loop joins
 usedJoinOptimization: true
 
-### With random order, seed 420, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DD24FFAE1F16C6C1F5B03939E0C642A797120A2585058C72554C9649BEA427AB",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign3",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"c = c"
-						],
-						"leftEmbeddingField" : "x",
-						"rightEmbeddingField" : "z",
-						"stage" : "HASH_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"x.a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "none",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "y",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [x.a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [c = c]
+  leftEmbeddingField: "z"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign3]
+  direction: "forward"
 ```
+### With random order, seed 45, hash join enabled
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [x.a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [c = c]
+  leftEmbeddingField: "z"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign3]
+  direction: "forward"
+```
 ### With fixed order, index join
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DD24FFAE1F16C6C1F5B03939E0C642A797120A2585058C72554C9649BEA427AB",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign3",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"c = c"
-						],
-						"leftEmbeddingField" : "x",
-						"rightEmbeddingField" : "z",
-						"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"x.a = a"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "none",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"inputStage" : {
-					"indexName" : "b_1",
-					"isMultiKey" : false,
-					"isPartial" : false,
-					"isSparse" : false,
-					"isUnique" : false,
-					"keyPattern" : {
-						"b" : 1
-					},
-					"nss" : "test.basic_joins_md_foreign2",
-					"stage" : "INDEX_PROBE_NODE"
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "FETCH"
-			}
-		],
-		"joinPredicates" : [
-			"b = b"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 8,
-		"rightEmbeddingField" : "y",
-		"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+INDEXED_NESTED_LOOP_JOIN_EMBEDDING [b = b]
+leftEmbeddingField: "none"
+rightEmbeddingField: "y"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign2]
+  |  
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign2]
+  |  keyPattern: {  "b" : 1 }
+  |  indexName: "b_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [x.a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [c = c]
+  leftEmbeddingField: "z"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign3]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration and indexes
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "y",
-			"localField" : "b",
-			"foreignField" : "b"
-		}
-	},
-	{
-		"$unwind" : "$y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "z",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 1,  "a" : 1,  "b" : "bar",  "x" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 0,  "a" : 1,  "c" : "zoo",  "d" : 1 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 0,  "b" : "bar",  "d" : 2 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "x" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 },  "y" : {  "_id" : 1,  "b" : "bar",  "d" : 6 },  "z" : {  "_id" : 2,  "a" : 2,  "c" : "x",  "d" : 3 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "DD24FFAE1F16C6C1F5B03939E0C642A797120A2585058C72554C9649BEA427AB",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"inputStage" : {
-									"indexName" : "a_1",
-									"isMultiKey" : false,
-									"isPartial" : false,
-									"isSparse" : false,
-									"isUnique" : false,
-									"keyPattern" : {
-										"a" : 1
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "INDEX_PROBE_NODE"
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "FETCH"
-							}
-						],
-						"joinPredicates" : [
-							"a = a"
-						],
-						"leftEmbeddingField" : "none",
-						"rightEmbeddingField" : "x",
-						"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-					},
-					{
-						"inputStage" : {
-							"indexName" : "b_1",
-							"isMultiKey" : false,
-							"isPartial" : false,
-							"isSparse" : false,
-							"isUnique" : false,
-							"keyPattern" : {
-								"b" : 1
-							},
-							"nss" : "test.basic_joins_md_foreign2",
-							"stage" : "INDEX_PROBE_NODE"
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "FETCH"
-					}
-				],
-				"joinPredicates" : [
-					"b = b"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "y",
-				"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign3",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"x.c = c"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 9,
-		"rightEmbeddingField" : "z",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
+usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [x.c = c]
+leftEmbeddingField: "none"
+rightEmbeddingField: "z"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  INDEXED_NESTED_LOOP_JOIN_EMBEDDING [b = b]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "y"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign2]
+  |  
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign2]
+  |  keyPattern: {  "b" : 1 }
+  |  indexName: "b_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  INDEXED_NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign1]
+  |  
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign1]
+  |  keyPattern: {  "a" : 1 }
+  |  indexName: "a_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ## 9. Basic example with 3 joins & subsequent join referencing nested paths
 ### No join opt
 ### Pipeline
@@ -9874,1053 +2974,262 @@ Execution Engine: classic
 ```
 
 ### With bottom-up plan enumeration (left-deep)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "w.y",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$w.y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "k.y.z",
-			"localField" : "w.y.d",
-			"foreignField" : "d"
-		}
-	},
-	{
-		"$unwind" : "$k.y.z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "k" : {  "y" : {  "z" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } } },  "w" : {  "y" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } },  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "9226A4FAA10C8790B27D9B5B865D46D0C58179A837F014E6289A34A6EBE76420",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"a = a"
-						],
-						"leftEmbeddingField" : "none",
-						"rightEmbeddingField" : "x",
-						"stage" : "HASH_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign3",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"x.c = c"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "w.y",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"w.y.d = d"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "k.y.z",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [w.y.d = d]
+leftEmbeddingField: "none"
+rightEmbeddingField: "k.y.z"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [x.c = c]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "w.y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (right-deep)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "w.y",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$w.y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "k.y.z",
-			"localField" : "w.y.d",
-			"foreignField" : "d"
-		}
-	},
-	{
-		"$unwind" : "$k.y.z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "k" : {  "y" : {  "z" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } } },  "w" : {  "y" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } },  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "9226A4FAA10C8790B27D9B5B865D46D0C58179A837F014E6289A34A6EBE76420",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			},
-			{
-				"inputStages" : [
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign3",
-						"stage" : "COLLSCAN"
-					},
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"a = a"
-						],
-						"leftEmbeddingField" : "none",
-						"rightEmbeddingField" : "x",
-						"stage" : "HASH_JOIN_EMBEDDING"
-					}
-				],
-				"joinPredicates" : [
-					"c = x.c"
-				],
-				"leftEmbeddingField" : "w.y",
-				"rightEmbeddingField" : "none",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			}
-		],
-		"joinPredicates" : [
-			"d = w.y.d"
-		],
-		"leftEmbeddingField" : "k.y.z",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "none",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [d = w.y.d]
+leftEmbeddingField: "k.y.z"
+rightEmbeddingField: "none"
+  |  |
+  |  HASH_JOIN_EMBEDDING [c = x.c]
+  |  leftEmbeddingField: "w.y"
+  |  rightEmbeddingField: "none"
+  |  |  |
+  |  |  HASH_JOIN_EMBEDDING [a = a]
+  |  |  leftEmbeddingField: "none"
+  |  |  rightEmbeddingField: "x"
+  |  |  |  |
+  |  |  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  |  |  direction: "forward"
+  |  |  |
+  |  |  COLLSCAN [test.basic_joins_md]
+  |  |  direction: "forward"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration (zig-zag)
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "w.y",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$w.y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "k.y.z",
-			"localField" : "w.y.d",
-			"foreignField" : "d"
-		}
-	},
-	{
-		"$unwind" : "$k.y.z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "k" : {  "y" : {  "z" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } } },  "w" : {  "y" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } },  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "9226A4FAA10C8790B27D9B5B865D46D0C58179A837F014E6289A34A6EBE76420",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			},
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"a = a"
-						],
-						"leftEmbeddingField" : "none",
-						"rightEmbeddingField" : "x",
-						"stage" : "HASH_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign3",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"x.c = c"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "w.y",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			}
-		],
-		"joinPredicates" : [
-			"d = w.y.d"
-		],
-		"leftEmbeddingField" : "k.y.z",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "none",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [d = w.y.d]
+leftEmbeddingField: "k.y.z"
+rightEmbeddingField: "none"
+  |  |
+  |  HASH_JOIN_EMBEDDING [x.c = c]
+  |  leftEmbeddingField: "none"
+  |  rightEmbeddingField: "w.y"
+  |  |  |
+  |  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  |  direction: "forward"
+  |  |
+  |  HASH_JOIN_EMBEDDING [a = a]
+  |  leftEmbeddingField: "none"
+  |  rightEmbeddingField: "x"
+  |  |  |
+  |  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  |  direction: "forward"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  direction: "forward"
+```
 ### With random order, seed 44, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "w.y",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$w.y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "k.y.z",
-			"localField" : "w.y.d",
-			"foreignField" : "d"
-		}
-	},
-	{
-		"$unwind" : "$k.y.z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "k" : {  "y" : {  "z" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } } },  "w" : {  "y" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } },  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "9226A4FAA10C8790B27D9B5B865D46D0C58179A837F014E6289A34A6EBE76420",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"a = a"
-						],
-						"leftEmbeddingField" : "none",
-						"rightEmbeddingField" : "x",
-						"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign3",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"x.c = c"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "w.y",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"w.y.d = d"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "k.y.z",
-		"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+NESTED_LOOP_JOIN_EMBEDDING [w.y.d = d]
+leftEmbeddingField: "none"
+rightEmbeddingField: "k.y.z"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [x.c = c]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "w.y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
 ### With random order, seed 44, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "w.y",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$w.y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "k.y.z",
-			"localField" : "w.y.d",
-			"foreignField" : "d"
-		}
-	},
-	{
-		"$unwind" : "$k.y.z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "k" : {  "y" : {  "z" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } } },  "w" : {  "y" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } },  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "9226A4FAA10C8790B27D9B5B865D46D0C58179A837F014E6289A34A6EBE76420",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"a = a"
-						],
-						"leftEmbeddingField" : "none",
-						"rightEmbeddingField" : "x",
-						"stage" : "HASH_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign3",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"x.c = c"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "w.y",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"w.y.d = d"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "k.y.z",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
-### With random order, seed 420, nested loop joins
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "w.y",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$w.y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "k.y.z",
-			"localField" : "w.y.d",
-			"foreignField" : "d"
-		}
-	},
-	{
-		"$unwind" : "$k.y.z"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "k" : {  "y" : {  "z" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } } },  "w" : {  "y" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } },  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "9226A4FAA10C8790B27D9B5B865D46D0C58179A837F014E6289A34A6EBE76420",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign3",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"c = c"
-						],
-						"leftEmbeddingField" : "x",
-						"rightEmbeddingField" : "w.y",
-						"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"w.y.d = d"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "k.y.z",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"x.a = a"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "none",
-		"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
+HASH_JOIN_EMBEDDING [w.y.d = d]
+leftEmbeddingField: "none"
+rightEmbeddingField: "k.y.z"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [x.c = c]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "w.y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
 ```
+### With random order, seed 45, nested loop joins
 usedJoinOptimization: true
 
-### With random order, seed 420, hash join enabled
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "w.y",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$w.y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "k.y.z",
-			"localField" : "w.y.d",
-			"foreignField" : "d"
-		}
-	},
-	{
-		"$unwind" : "$k.y.z"
-	}
-]
 ```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "k" : {  "y" : {  "z" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } } },  "w" : {  "y" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } },  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "9226A4FAA10C8790B27D9B5B865D46D0C58179A837F014E6289A34A6EBE76420",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign3",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"c = c"
-						],
-						"leftEmbeddingField" : "x",
-						"rightEmbeddingField" : "w.y",
-						"stage" : "HASH_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"w.y.d = d"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "k.y.z",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"x.a = a"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "none",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
+HASH_JOIN_EMBEDDING [x.a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [w.y.c = c]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [d = d]
+  leftEmbeddingField: "k.y.z"
+  rightEmbeddingField: "w.y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  direction: "forward"
 ```
+### With random order, seed 45, hash join enabled
 usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [x.a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [w.y.c = c]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [d = d]
+  leftEmbeddingField: "k.y.z"
+  rightEmbeddingField: "w.y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  direction: "forward"
+```
 ### With fixed order, index join
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "w.y",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$w.y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "k.y.z",
-			"localField" : "w.y.d",
-			"foreignField" : "d"
-		}
-	},
-	{
-		"$unwind" : "$k.y.z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "k" : {  "y" : {  "z" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } } },  "w" : {  "y" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } },  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "9226A4FAA10C8790B27D9B5B865D46D0C58179A837F014E6289A34A6EBE76420",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md_foreign3",
-								"stage" : "COLLSCAN"
-							}
-						],
-						"joinPredicates" : [
-							"c = c"
-						],
-						"leftEmbeddingField" : "x",
-						"rightEmbeddingField" : "w.y",
-						"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign2",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"w.y.d = d"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "k.y.z",
-				"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"x.a = a"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 7,
-		"rightEmbeddingField" : "none",
-		"stage" : "NESTED_LOOP_JOIN_EMBEDDING"
-	}
-}
-```
 usedJoinOptimization: true
 
+```
+NESTED_LOOP_JOIN_EMBEDDING [x.a = a]
+leftEmbeddingField: "none"
+rightEmbeddingField: "none"
+  |  |
+  |  COLLSCAN [test.basic_joins_md]
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [w.y.c = c]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign1]
+  |  direction: "forward"
+  |
+  NESTED_LOOP_JOIN_EMBEDDING [d = d]
+  leftEmbeddingField: "k.y.z"
+  rightEmbeddingField: "w.y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  COLLSCAN [test.basic_joins_md_foreign2]
+  direction: "forward"
+```
 ### With bottom-up plan enumeration and indexes
-### Pipeline
-```json
-[
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign1",
-			"as" : "x",
-			"localField" : "a",
-			"foreignField" : "a"
-		}
-	},
-	{
-		"$unwind" : "$x"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign3",
-			"as" : "w.y",
-			"localField" : "x.c",
-			"foreignField" : "c"
-		}
-	},
-	{
-		"$unwind" : "$w.y"
-	},
-	{
-		"$lookup" : {
-			"from" : "basic_joins_md_foreign2",
-			"as" : "k.y.z",
-			"localField" : "w.y.d",
-			"foreignField" : "d"
-		}
-	},
-	{
-		"$unwind" : "$k.y.z"
-	}
-]
-```
-### Results
-```json
-{  "_id" : 2,  "a" : 2,  "b" : "bar",  "k" : {  "y" : {  "z" : {  "_id" : 0,  "b" : "bar",  "d" : 2 } } },  "w" : {  "y" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } },  "x" : {  "_id" : 1,  "a" : 2,  "c" : "blah",  "d" : 2 } }
-```
-### Summarized explain
-Execution Engine: sbe
-```json
-{
-	"queryShapeHash" : "9226A4FAA10C8790B27D9B5B865D46D0C58179A837F014E6289A34A6EBE76420",
-	"rejectedPlans" : [ ],
-	"winningPlan" : {
-		"inputStages" : [
-			{
-				"inputStages" : [
-					{
-						"inputStages" : [
-							{
-								"direction" : "forward",
-								"filter" : {
-									
-								},
-								"nss" : "test.basic_joins_md",
-								"stage" : "COLLSCAN"
-							},
-							{
-								"inputStage" : {
-									"indexName" : "a_1",
-									"isMultiKey" : false,
-									"isPartial" : false,
-									"isSparse" : false,
-									"isUnique" : false,
-									"keyPattern" : {
-										"a" : 1
-									},
-									"nss" : "test.basic_joins_md_foreign1",
-									"stage" : "INDEX_PROBE_NODE"
-								},
-								"nss" : "test.basic_joins_md_foreign1",
-								"stage" : "FETCH"
-							}
-						],
-						"joinPredicates" : [
-							"a = a"
-						],
-						"leftEmbeddingField" : "none",
-						"rightEmbeddingField" : "x",
-						"stage" : "INDEXED_NESTED_LOOP_JOIN_EMBEDDING"
-					},
-					{
-						"direction" : "forward",
-						"filter" : {
-							
-						},
-						"nss" : "test.basic_joins_md_foreign3",
-						"stage" : "COLLSCAN"
-					}
-				],
-				"joinPredicates" : [
-					"x.c = c"
-				],
-				"leftEmbeddingField" : "none",
-				"rightEmbeddingField" : "w.y",
-				"stage" : "HASH_JOIN_EMBEDDING"
-			},
-			{
-				"direction" : "forward",
-				"filter" : {
-					
-				},
-				"nss" : "test.basic_joins_md_foreign2",
-				"stage" : "COLLSCAN"
-			}
-		],
-		"joinPredicates" : [
-			"w.y.d = d"
-		],
-		"leftEmbeddingField" : "none",
-		"planNodeId" : 8,
-		"rightEmbeddingField" : "k.y.z",
-		"stage" : "HASH_JOIN_EMBEDDING"
-	}
-}
-```
+usedJoinOptimization: true
 
+```
+HASH_JOIN_EMBEDDING [w.y.d = d]
+leftEmbeddingField: "none"
+rightEmbeddingField: "k.y.z"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign2]
+  |  direction: "forward"
+  |
+  HASH_JOIN_EMBEDDING [x.c = c]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "w.y"
+  |  |
+  |  COLLSCAN [test.basic_joins_md_foreign3]
+  |  direction: "forward"
+  |
+  INDEXED_NESTED_LOOP_JOIN_EMBEDDING [a = a]
+  leftEmbeddingField: "none"
+  rightEmbeddingField: "x"
+  |  |
+  |  FETCH [test.basic_joins_md_foreign1]
+  |  
+  |  |
+  |  INDEX_PROBE_NODE [test.basic_joins_md_foreign1]
+  |  keyPattern: {  "a" : 1 }
+  |  indexName: "a_1"
+  |  isMultiKey: false
+  |  isUnique: false
+  |  isSparse: false
+  |  isPartial: false
+  |
+  COLLSCAN [test.basic_joins_md]
+  direction: "forward"
+```
diff --git a/jstests/query_golden/join_opt/base_coll_reorder_md.js b/jstests/query_golden/join_opt/base_coll_reorder_md.js
index a394528b94e..9669fee4699 100644
--- a/jstests/query_golden/join_opt/base_coll_reorder_md.js
+++ b/jstests/query_golden/join_opt/base_coll_reorder_md.js
@@ -5,10 +5,10 @@
  *   requires_fcv_83
  * ]
  */
-import {codeOneLine, linebreak, section, subSection} from "jstests/libs/pretty_md.js";
+import {linebreak, section, subSection} from "jstests/libs/pretty_md.js";
 import {outputAggregationPlanAndResults} from "jstests/libs/query/golden_test_utils.js";
-import {normalizePlan, getWinningPlanFromExplain} from "jstests/libs/query/analyze_plan.js";
 import {checkSbeFullFeatureFlagEnabled} from "jstests/libs/query/sbe_util.js";
+import {prettyPrintWinningPlan, getWinningJoinOrderOneLine} from "jstests/query_golden/libs/pretty_plan.js";
 
 const coll = db[jsTestName() + "_base"];
 coll.drop();
@@ -55,49 +55,11 @@ const origParams = assert.commandWorked(
 );
 delete origParams.ok;
 
-function getStageAbbreviation(stageName) {
-    switch (stageName) {
-        case "HASH_JOIN_EMBEDDING":
-            return "HJ";
-        case "NESTED_LOOP_JOIN":
-            return "NLJ";
-        case "MERGE_JOIN":
-            return "MJ";
-        default:
-            return stageName;
-    }
-}
-
-function formatEmbeddingField(field) {
-    if (field && field !== "none") {
-        return field;
-    }
-
-    return "_";
-}
-
-function abbreviate(node) {
-    const abbrev = getStageAbbreviation(node.stage);
-    if (abbrev == node.stage) {
-        return abbrev;
-    }
-    const l = formatEmbeddingField(node.leftEmbeddingField);
-    const r = formatEmbeddingField(node.rightEmbeddingField);
-    const children = node.inputStages.map(abbreviate);
-    assert.eq(children.length, 2);
-    return `(${abbrev} ${l} = ${children[0]}, ${r} = ${children[1]})`;
-}
-
-function getJoinOrder(explain) {
-    const winningPlan = normalizePlan(getWinningPlanFromExplain(explain), false /*shouldPlatten*/);
-    const x = abbreviate(winningPlan);
-    return x;
-}
-
 function runSingleTest(subtitle, pipeline, seen = undefined) {
     let joinOrder = undefined;
+    const explain = coll.explain().aggregate(pipeline);
     if (seen) {
-        joinOrder = getJoinOrder(coll.explain().aggregate(pipeline));
+        joinOrder = getWinningJoinOrderOneLine(explain);
         if (seen.has(joinOrder)) {
             return undefined;
         }
@@ -105,7 +67,7 @@ function runSingleTest(subtitle, pipeline, seen = undefined) {
     }
     subSection(subtitle);
     if (joinOrder) {
-        codeOneLine(joinOrder, true);
+        prettyPrintWinningPlan(explain);
     } else {
         outputAggregationPlanAndResults(coll, pipeline, {}, true, false);
     }
diff --git a/jstests/query_golden/join_opt/basic_joins_md.js b/jstests/query_golden/join_opt/basic_joins_md.js
index bef91d2b8da..1fdb89d49aa 100644
--- a/jstests/query_golden/join_opt/basic_joins_md.js
+++ b/jstests/query_golden/join_opt/basic_joins_md.js
@@ -5,10 +5,12 @@
  *   requires_fcv_83
  * ]
  */
+import {assertArrayEq} from "jstests/aggregation/extras/utils.js";
 import {line, linebreak, section, subSection} from "jstests/libs/pretty_md.js";
 import {outputAggregationPlanAndResults} from "jstests/libs/query/golden_test_utils.js";
 import {getQueryPlanner} from "jstests/libs/query/analyze_plan.js";
 import {checkSbeFullFeatureFlagEnabled} from "jstests/libs/query/sbe_util.js";
+import {prettyPrintWinningPlan} from "jstests/query_golden/libs/pretty_plan.js";
 
 const coll = db[jsTestName()];
 coll.drop();
@@ -39,8 +41,7 @@ assert.commandWorked(
     ]),
 );
 
-function verifyExplainOutput(pipeline, joinOptExpectedInExplainOutput) {
-    const explain = coll.explain().aggregate(pipeline);
+function verifyExplainOutput(explain, joinOptExpectedInExplainOutput) {
     const winningPlan = getQueryPlanner(explain).winningPlan;
 
     if (joinOptExpectedInExplainOutput) {
@@ -55,131 +56,100 @@ function verifyExplainOutput(pipeline, joinOptExpectedInExplainOutput) {
     assert(!("usedJoinOptimization" in winningPlan), winningPlan);
 }
 
+function getJoinTestResultsAndExplain(desc, pipeline, params) {
+    subSection(desc);
+    assert.commandWorked(db.adminCommand({setParameter: 1, ...params}));
+    return [coll.aggregate(pipeline).toArray(), coll.explain().aggregate(pipeline)];
+}
+
+function runJoinTestAndCompare(desc, pipeline, params, expected) {
+    const [actual, explain] = getJoinTestResultsAndExplain(desc, pipeline, params);
+    assertArrayEq({expected, actual});
+    verifyExplainOutput(explain, true /* joinOptExpectedInExplainOutput */);
+    prettyPrintWinningPlan(explain);
+}
+
 function runBasicJoinTest(pipeline) {
     try {
         subSection("No join opt");
         assert.commandWorked(db.adminCommand({setParameter: 1, internalEnableJoinOptimization: false}));
         outputAggregationPlanAndResults(coll, pipeline, {}, true, false, false /* noLineBreak*/);
+        const noJoinExplain = coll.explain().aggregate(pipeline);
         const noJoinOptResults = coll.aggregate(pipeline).toArray();
-        verifyExplainOutput(pipeline, false /* joinOptExpectedInExplainOutput */);
+        verifyExplainOutput(noJoinExplain, false /* joinOptExpectedInExplainOutput */);
 
-        subSection("With bottom-up plan enumeration (left-deep)");
-        assert.commandWorked(db.adminCommand({setParameter: 1, internalEnableJoinOptimization: true}));
-        assert.commandWorked(
-            db.adminCommand({
-                setParameter: 1,
+        runJoinTestAndCompare(
+            "With bottom-up plan enumeration (left-deep)",
+            pipeline,
+            {
+                internalEnableJoinOptimization: true,
                 internalJoinReorderMode: "bottomUp",
                 internalJoinPlanTreeShape: "leftDeep",
-            }),
-        );
-        outputAggregationPlanAndResults(coll, pipeline, {}, true, false, true /* noLineBreak*/);
-        const bottomUpLeftDeepResults = coll.aggregate(pipeline).toArray();
-        verifyExplainOutput(pipeline, true /* joinOptExpectedInExplainOutput */);
-        assert(
-            _resultSetsEqualUnordered(noJoinOptResults, bottomUpLeftDeepResults),
-            "Results differ between no join opt and bottom-up left-deep join enumeration",
+            },
+            noJoinOptResults,
         );
 
-        subSection("With bottom-up plan enumeration (right-deep)");
-        assert.commandWorked(db.adminCommand({setParameter: 1, internalJoinPlanTreeShape: "rightDeep"}));
-        outputAggregationPlanAndResults(coll, pipeline, {}, true, false, true /* noLineBreak*/);
-        const bottomUpRightDeepResults = coll.aggregate(pipeline).toArray();
-        verifyExplainOutput(pipeline, true /* joinOptExpectedInExplainOutput */);
-        assert(
-            _resultSetsEqualUnordered(noJoinOptResults, bottomUpRightDeepResults),
-            "Results differ between no join opt and bottom-up right-deep join enumeration",
+        runJoinTestAndCompare(
+            "With bottom-up plan enumeration (right-deep)",
+            pipeline,
+            {internalJoinPlanTreeShape: "rightDeep"},
+            noJoinOptResults,
         );
 
-        subSection("With bottom-up plan enumeration (zig-zag)");
-        assert.commandWorked(db.adminCommand({setParameter: 1, internalJoinPlanTreeShape: "zigZag"}));
-        outputAggregationPlanAndResults(coll, pipeline, {}, true, false, true /* noLineBreak*/);
-        const bottomUpZigZagResults = coll.aggregate(pipeline).toArray();
-        verifyExplainOutput(pipeline, true /* joinOptExpectedInExplainOutput */);
-        assert(
-            _resultSetsEqualUnordered(noJoinOptResults, bottomUpZigZagResults),
-            "Results differ between no join opt and bottom-up zig-zag join enumeration",
+        runJoinTestAndCompare(
+            "With bottom-up plan enumeration (zig-zag)",
+            pipeline,
+            {internalJoinPlanTreeShape: "zigZag"},
+            noJoinOptResults,
         );
 
-        subSection("With random order, seed 44, nested loop joins");
-        assert.commandWorked(db.adminCommand({setParameter: 1, internalJoinReorderMode: "random"}));
-        assert.commandWorked(db.adminCommand({setParameter: 1, internalRandomJoinOrderSeed: 44}));
-        outputAggregationPlanAndResults(coll, pipeline, {}, true, false, true /* noLineBreak*/);
-        const seed44NLJResults = coll.aggregate(pipeline).toArray();
-        verifyExplainOutput(pipeline, true /* joinOptExpectedInExplainOutput */);
-        assert(
-            _resultSetsEqualUnordered(noJoinOptResults, seed44NLJResults),
-            "Results differ between no join opt and seed 44 NLJ",
+        for (const internalRandomJoinOrderSeed of [44, 45]) {
+            runJoinTestAndCompare(
+                `With random order, seed ${internalRandomJoinOrderSeed}, nested loop joins`,
+                pipeline,
+                {internalJoinReorderMode: "random", internalRandomJoinOrderSeed},
+                noJoinOptResults,
+            );
+
+            runJoinTestAndCompare(
+                `With random order, seed ${internalRandomJoinOrderSeed}, hash join enabled`,
+                pipeline,
+                {internalRandomJoinReorderDefaultToHashJoin: true},
+                noJoinOptResults,
+            );
+        }
+
+        // Run tests with indexes.
+        assert.commandWorked(foreignColl1.createIndex({a: 1}));
+        assert.commandWorked(foreignColl2.createIndex({b: 1}));
+
+        runJoinTestAndCompare(
+            "With fixed order, index join",
+            pipeline,
+            {internalRandomJoinReorderDefaultToHashJoin: false},
+            noJoinOptResults,
         );
 
-        subSection("With random order, seed 44, hash join enabled");
-        assert.commandWorked(db.adminCommand({setParameter: 1, internalRandomJoinReorderDefaultToHashJoin: true}));
-        outputAggregationPlanAndResults(coll, pipeline, {}, true, false, true /* noLineBreak*/);
-        const seed44HJResults = coll.aggregate(pipeline).toArray();
-        verifyExplainOutput(pipeline, true /* joinOptExpectedInExplainOutput */);
-        assert(
-            _resultSetsEqualUnordered(noJoinOptResults, seed44HJResults),
-            "Results differ between no join opt and seed 44 HJ",
+        runJoinTestAndCompare(
+            "With bottom-up plan enumeration and indexes",
+            pipeline,
+            {internalJoinReorderMode: "bottomUp", internalJoinPlanTreeShape: "leftDeep"},
+            noJoinOptResults,
         );
 
-        assert.commandWorked(db.adminCommand({setParameter: 1, internalRandomJoinReorderDefaultToHashJoin: false}));
-
-        subSection("With random order, seed 420, nested loop joins");
-        assert.commandWorked(db.adminCommand({setParameter: 1, internalEnableJoinOptimization: true}));
-        assert.commandWorked(db.adminCommand({setParameter: 1, internalRandomJoinOrderSeed: 420}));
-        outputAggregationPlanAndResults(coll, pipeline, {}, true, false, true /* noLineBreak*/);
-        const seed420NLJResults = coll.aggregate(pipeline).toArray();
-        verifyExplainOutput(pipeline, true /* joinOptExpectedInExplainOutput */);
-        assert(
-            _resultSetsEqualUnordered(noJoinOptResults, seed420NLJResults),
-            "Results differ between no join opt and seed 420 NLJ",
-        );
-
-        subSection("With random order, seed 420, hash join enabled");
-        assert.commandWorked(db.adminCommand({setParameter: 1, internalRandomJoinReorderDefaultToHashJoin: true}));
-        outputAggregationPlanAndResults(coll, pipeline, {}, true, false, true /* noLineBreak*/);
-        const seed420HJResults = coll.aggregate(pipeline).toArray();
-        verifyExplainOutput(pipeline, true /* joinOptExpectedInExplainOutput */);
-        assert(
-            _resultSetsEqualUnordered(noJoinOptResults, seed420HJResults),
-            "Results differ between no join opt and seed 420 HJ",
-        );
-
-        assert.commandWorked(db.adminCommand({setParameter: 1, internalRandomJoinReorderDefaultToHashJoin: false}));
-        foreignColl1.createIndex({a: 1});
-        foreignColl2.createIndex({b: 1});
-        subSection("With fixed order, index join");
-
-        outputAggregationPlanAndResults(coll, pipeline, {}, true, false, true /* noLineBreak*/);
-        verifyExplainOutput(pipeline, true /* joinOptExpectedInExplainOutput */);
-        const seedINLJResults = coll.aggregate(pipeline).toArray();
-        assert(
-            _resultSetsEqualUnordered(noJoinOptResults, seedINLJResults),
-            "Results differ between no join opt and INLJ",
-        );
-
-        subSection("With bottom-up plan enumeration and indexes");
-        assert.commandWorked(
-            db.adminCommand({
-                setParameter: 1,
-                internalJoinReorderMode: "bottomUp",
-                internalJoinPlanTreeShape: "leftDeep",
-            }),
-        );
-        outputAggregationPlanAndResults(coll, pipeline, {}, true, false);
-        const bottomUpINLJResults = coll.aggregate(pipeline).toArray();
-        assert(
-            _resultSetsEqualUnordered(noJoinOptResults, bottomUpINLJResults),
-            "Results differ between no join opt and INLJ",
-        );
-
-        foreignColl1.dropIndex({a: 1});
-        foreignColl2.dropIndex({b: 1});
+        assert.commandWorked(foreignColl1.dropIndex({a: 1}));
+        assert.commandWorked(foreignColl2.dropIndex({b: 1}));
     } finally {
         // Reset flags.
-        assert.commandWorked(db.adminCommand({setParameter: 1, internalEnableJoinOptimization: false}));
-        assert.commandWorked(db.adminCommand({setParameter: 1, internalRandomJoinReorderDefaultToHashJoin: false}));
-        assert.commandWorked(db.adminCommand({setParameter: 1, internalJoinReorderMode: "bottomUp"}));
-        assert.commandWorked(db.adminCommand({setParameter: 1, internalJoinPlanTreeShape: "zigZag"}));
+        assert.commandWorked(
+            db.adminCommand({
+                setParameter: 1,
+                internalEnableJoinOptimization: false,
+                internalRandomJoinReorderDefaultToHashJoin: false,
+                internalJoinReorderMode: "bottomUp",
+                internalJoinPlanTreeShape: "zigZag",
+            }),
+        );
     }
 }
 
diff --git a/jstests/query_golden/libs/pretty_plan.js b/jstests/query_golden/libs/pretty_plan.js
new file mode 100644
index 00000000000..c5c9acc5d39
--- /dev/null
+++ b/jstests/query_golden/libs/pretty_plan.js
@@ -0,0 +1,123 @@
+/**
+ * Pretty-printing helpers for query plans in explain.
+ */
+import {prettyPrintTree} from "jstests/query_golden/libs/pretty_tree.js";
+import {normalizePlan, getWinningPlanFromExplain, kExplainChildFieldNames} from "jstests/libs/query/analyze_plan.js";
+
+//
+// Helpers used below to get an abbreviated join order.
+//
+
+function getStageAbbreviation(stageName) {
+    switch (stageName) {
+        case "HASH_JOIN_EMBEDDING":
+            return "HJ";
+        case "NESTED_LOOP_JOIN":
+            return "NLJ";
+        case "INDEX_NESTED_LOOP_JOIN":
+            return "INLJ";
+        default:
+            return stageName;
+    }
+}
+
+function formatEmbeddingField(field) {
+    if (field && field !== "none") {
+        return field;
+    }
+    return "_";
+}
+
+function abbreviate(node) {
+    const abbrev = getStageAbbreviation(node.stage);
+    if (abbrev == node.stage) {
+        if (node.nss) {
+            return `${node.stage} [${node.nss}]`;
+        }
+        return abbrev;
+    }
+    const l = formatEmbeddingField(node.leftEmbeddingField);
+    const r = formatEmbeddingField(node.rightEmbeddingField);
+    const children = node.inputStages.map(abbreviate);
+    assert.eq(children.length, 2);
+    return `(${abbrev} ${l} = ${children[0]}, ${r} = ${children[1]})`;
+}
+
+//
+// End of helpers.
+//
+
+/**
+ * Helper function to extract a one line join order from the input plan.
+ * Useful for checking if this is a duplicate join order.
+ */
+export function getJoinOrderOneLine(plan) {
+    const winningPlan = normalizePlan(plan, false /*shouldFlatten*/);
+    const x = abbreviate(winningPlan);
+    return x;
+}
+
+/**
+ * Same as above, but for the winning plan in an 'explain'.
+ */
+export function getWinningJoinOrderOneLine(explain) {
+    return getJoinOrderOneLine(getWinningPlanFromExplain(explain));
+}
+
+//
+// Helpers used below to get a query plan pretty-printed as a tree.
+//
+
+function shortenField(node, fieldName) {
+    return node[fieldName] ? " [" + node[fieldName] + "]" : "";
+}
+
+function printPlanNode(node) {
+    // Place any fields with special formatting/ that we don't want in the default output here.
+    const bannedFieldNames = ["stage", "planNodeId", "nss", "joinPredicates"].concat(kExplainChildFieldNames);
+
+    const entries = Object.entries(node).filter(([f, _]) => !bannedFieldNames.includes(f));
+    let str = `${node.stage}${shortenField(node, "nss")}${shortenField(node, "joinPredicates")}\n`;
+    for (let i = 0; i < entries.length; i++) {
+        const [f, v] = entries[i];
+        if (f == "filter" && Object.entries(v).length == 0) {
+            // Omit empty filters.
+            continue;
+        }
+        str += `${f}: ${tojsononeline(v)}${i < entries.length - 1 ? "\n" : ""}`;
+    }
+    return str;
+}
+
+function getNodeChildren(node) {
+    let children = [];
+    for (const [field, entry] of Object.entries(node)) {
+        if (kExplainChildFieldNames.includes(field)) {
+            if (Array.isArray(entry)) {
+                children = children.concat(entry);
+            } else {
+                children.push(entry);
+            }
+        }
+    }
+    return children;
+}
+
+//
+// End of helpers.
+//
+
+/**
+ * Pretty-prints the given plan as a tree.
+ */
+export function prettyPrintPlan(plan) {
+    const winningPlan = normalizePlan(plan, false /*shouldFlatten*/);
+    prettyPrintTree(winningPlan, printPlanNode, getNodeChildren);
+}
+
+/**
+ * Same as above, but extracts the winning plan from 'explain' to print.
+ */
+export function prettyPrintWinningPlan(explain) {
+    return prettyPrintPlan(getWinningPlanFromExplain(explain));
+}
diff --git a/jstests/query_golden/libs/pretty_tree.js b/jstests/query_golden/libs/pretty_tree.js
new file mode 100644
index 00000000000..85f134dbe61
--- /dev/null
+++ b/jstests/query_golden/libs/pretty_tree.js
@@ -0,0 +1,68 @@
+/**
+ * Generic tree-printer for golden tests.
+ */
+import {code} from "jstests/libs/pretty_md.js";
+
+function defaultNodeToString(node) {
+    return tojsononeline(node);
+}
+
+function defaultGetChildrenForNode(node) {
+    return node.children || [];
+}
+
+const kWhitespaceSeparator = "  ";
+const kEdge = "|";
+function prefix(numEdges) {
+    return (kWhitespaceSeparator + kEdge).repeat(numEdges + 1);
+}
+
+function formatMultilineNodeStr(nodeStr, numEdges) {
+    const lines = nodeStr.split("\n");
+    const edges = "\n" + prefix(numEdges - 1) + kWhitespaceSeparator;
+    const prevEdges = prefix(numEdges) + "\n";
+    return prevEdges + prefix(numEdges - 1) + kWhitespaceSeparator + lines.join(edges);
+}
+
+function formatNodeForTree(nodeStr, depth, numEdges) {
+    if (depth == 0) {
+        // Root node.
+        return nodeStr + "\n";
+    }
+
+    return formatMultilineNodeStr(nodeStr, numEdges) + "\n";
+}
+
+/**
+ * Main entry point for generating a pretty-printed tree string.
+ */
+export function prettyTreeString(
+    node,
+    nodeLambda = defaultNodeToString,
+    getChildrenForNode = defaultGetChildrenForNode,
+    depth = 0,
+    numEdges = 0,
+) {
+    // Print root.
+    const printedNode = nodeLambda(node);
+    let out = formatNodeForTree(printedNode, depth, numEdges);
+
+    // Traverse tree- we print the last child first (highest in the tree).
+    const children = getChildrenForNode(node);
+    for (let i = children.length - 1; i >= 0; i--) {
+        // Increase distance from left & number of edges to print by index of child.
+        out += prettyTreeString(children[i], nodeLambda, getChildrenForNode, depth + 1, numEdges + i);
+    }
+    return out;
+}
+
+/**
+ * Main entry point for markdown-formatted tree string.
+ */
+export function prettyPrintTree(
+    node,
+    nodeLambda = defaultNodeToString,
+    getChildrenForNode = defaultGetChildrenForNode,
+) {
+    code(prettyTreeString(node, nodeLambda, getChildrenForNode), "");
+}