frankyin-factual commented on a change in pull request #28898:
URL: https://github.com/apache/spark/pull/28898#discussion_r445255141
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/NestedColumnAliasing.scala
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@@ -113,6 +113,11 @@ object NestedColumnAliasing {
case _: Sample => true
case _: RepartitionByExpression => true
case _: Join => true
+ case x: Filter => x.child match {
+ case _: Window => true
Review comment:
Looks like the plan is a `Project -> Filter -> Window`. If we only do
`case _: Window => true`, the projection aliasing won't be available at the
`Window` stage, and can't be passed onto later stages described in the ticket.
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