[GitHub] [spark] dongjoon-hyun commented on a change in pull request #28043: [SPARK-31280][SQL] Perform propagating empty relation after RewritePredicateSubquery

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dongjoon-hyun commented on a change in pull request #28043: [SPARK-31280][SQL] Perform propagating empty relation after RewritePredicateSubquery
URL: https://github.com/apache/spark/pull/28043#discussion_r399098985
 
 

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 File path: sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/optimizer/RewriteSubquerySuite.scala
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 @@ -52,4 +51,24 @@ class RewriteSubquerySuite extends PlanTest {
     comparePlans(optimized, correctAnswer)
   }
 
+  object OptimizeWithPropagateEmpty extends RuleExecutor[LogicalPlan] {
+    val batches =
+      Batch("Column Pruning", FixedPoint(100), ColumnPruning) ::
+        Batch("Rewrite Subquery", FixedPoint(1),
 
 Review comment:
   indentation?

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