Add extra rows to join table in QueryPlanTests.

At extremely low cardinalities, we may pick a non-unique index with more columns than a unique index with fewer columns. This behavior disappears at higher cardinalities, which is where we care more about the performance.

Author: nicktobey

enginetest/queries/query_plans.go

@@ -326,7 +326,7 @@ where
 			"     │       │       └─ org1 (longtext)\n" +
 			"     │       └─ TableAlias(dimension)\n" +
 			"     │           └─ IndexedTableAccess(asset)\n" +
-			"     │               ├─ index: [asset.orgId,asset.name,asset.val]\n" +
+			"     │               ├─ index: [asset.orgId,asset.name,asset.assetId]\n" +
 			"     │               └─ columns: [orgid assetid name val]\n" +
 			"     └─ Filter\n" +
 			"         ├─ AND\n" +
@@ -342,7 +342,7 @@ where
 			"         │       └─ org1 (longtext)\n" +
 			"         └─ TableAlias(style)\n" +
 			"             └─ IndexedTableAccess(asset)\n" +
-			"                 ├─ index: [asset.orgId,asset.name,asset.val]\n" +
+			"                 ├─ index: [asset.orgId,asset.name,asset.assetId]\n" +
 			"                 └─ columns: [orgid assetid name val]\n" +
 			"",
 	},

enginetest/scriptgen/setup/scripts/join

@@ -19,7 +19,12 @@ insert into asset values
     (3, 'org1', 'small', 'retries', 'curve'),
     (4, 'org1', 'medium', 'style', 'straight'),
     (5, 'org1', 'medium', 'color', 'green'),
-    (6, 'org1', 'medium', 'dimension', 'narrow');
+    (6, 'org1', 'medium', 'dimension', 'narrow'),
+    (7, 'org1', 'medium', 'retries', 'straight'),
+    (8, 'org1', 'large', 'style', 'bendy'),
+    (9, 'org1', 'large', 'color', 'red'),
+    (10, 'org1', 'large', 'dimension', 'round'),
+    (11, 'org1', 'large', 'retries', 'bendy');
 ----
 
 exec