cloud-fan commented on a change in pull request #28326:
URL: https://github.com/apache/spark/pull/28326#discussion_r415859659
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File path: sql/core/src/main/scala/org/apache/spark/sql/Column.scala
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@@ -1040,17 +1034,11 @@ class Column(val expr: Expression) extends Logging {
cloud-fan commented on a change in pull request #28326:
URL: https://github.com/apache/spark/pull/28326#discussion_r415531970
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/Analyzer.scala
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@@ -3262,10 +3262,21 @@ object CleanupAliases extend