cloud-fan commented on a change in pull request #29107:
URL: https://github.com/apache/spark/pull/29107#discussion_r458962281
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/CheckAnalysis.scala
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@@ -337,6 +337,10 @@ trait CheckAnalysis extends PredicateHelper {
case Tail(limitExpr, _) => checkLimitLikeClause("tail", limitExpr)
+ case Union(_, byName, allowMissingCol) if byName || allowMissingCol
=>
+ failAnalysis("Union should not be with true `byName` or " +
Review comment:
Since this is not something users can hit(only bug can trigger this),
maybe we can just remove this check here.
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