cloud-fan commented on a change in pull request #34053:
URL: https://github.com/apache/spark/pull/34053#discussion_r715025212
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/Optimizer.scala
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@@ -185,6 +185,8 @@ abstract class Optimizer(catalogManager: CatalogManager)
// PropagateEmptyRelation can change the nullability of an attribute
from nullable to
// non-nullable when an empty relation child of a Union is removed
UpdateAttributeNullability) ::
+ Batch("Rewrite with Correlated Expressions", Once,
+ RewriteAsOfJoin) ::
Review comment:
can we put it in the `Finish Analysis` batch?
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