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_r399100749
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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] {
Review comment:
BTW, it seems that we can `object Optimize` instead of making this.
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