viirya commented on a change in pull request #31595:
URL: https://github.com/apache/spark/pull/31595#discussion_r580582863
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/Optimizer.scala
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@@ -492,12 +492,43 @@ object RemoveRedundantAliases extends Rule[LogicalPlan] {
* Remove no-op operators from the query plan that do not make any
modifications.
*/
object RemoveNoopOperators extends Rule[LogicalPlan] {
+ private def removeAliasOnlyProject(plan: LogicalPlan): LogicalPlan = plan
match {
Review comment:
Alias-only project is not no-op project here.
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