cloud-fan commented on code in PR #38703:
URL: https://github.com/apache/spark/pull/38703#discussion_r1028795081


##########
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/subquery.scala:
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@@ -355,7 +355,7 @@ case class ListQuery(
       plan.canonicalized,
       outerAttrs.map(_.canonicalized),
       ExprId(0),
-      childOutputs.map(_.canonicalized.asInstanceOf[Attribute]),
+      plan.canonicalized.output,

Review Comment:
   @allisonwang-db do you know why we have `childOutputs`? It seems to be 
`child.output` most of the time



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