Github user cloud-fan commented on a diff in the pull request: https://github.com/apache/spark/pull/21823#discussion_r203978990 --- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/plans/QueryPlan.scala --- @@ -282,9 +282,9 @@ object QueryPlan extends PredicateHelper { case ar: AttributeReference => val ordinal = input.indexOf(ar.exprId) if (ordinal == -1) { - ar + ar.withName("") --- End diff -- let's leave it. We don't even normalize the exprId here.
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