prakharjain09 commented on a change in pull request #30300:
URL: https://github.com/apache/spark/pull/30300#discussion_r521206322



##########
File path: 
sql/core/src/main/scala/org/apache/spark/sql/execution/AliasAwareOutputExpression.scala
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@@ -48,13 +42,13 @@ trait AliasAwareOutputExpression extends UnaryExecNode {
  */
 trait AliasAwareOutputPartitioning extends AliasAwareOutputExpression {
   final override def outputPartitioning: Partitioning = {
-    if (hasAlias) {
-      child.outputPartitioning match {
-        case h: HashPartitioning => h.copy(expressions = 
replaceAliases(h.expressions))

Review comment:
       Added separate UTs for HashPartitioning, RangePartitioning, 
PartitioningCollection, SinglePartition.




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