maropu commented on a change in pull request #29104:
URL: https://github.com/apache/spark/pull/29104#discussion_r457097282
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/planning/patterns.scala
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@@ -388,3 +390,36 @@ object PhysicalWindow {
case _ => None
}
}
+
+object ExtractSingleColumnNotInSubquery extends JoinSelectionHelper {
Review comment:
Yea, thanks. Keeping the PR title/description updated is important for
making other reviewers understood smoothly.
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