viirya commented on a change in pull request #28560:
URL: https://github.com/apache/spark/pull/28560#discussion_r428975902
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/NestedColumnAliasing.scala
##########
@@ -48,7 +53,10 @@ object NestedColumnAliasing {
case Project(projectList, child) =>
Project(
getNewProjectList(projectList, nestedFieldToAlias),
- replaceChildrenWithAliases(child, attrToAliases))
+ replaceChildrenWithAliases(child, nestedFieldToAlias, attrToAliases))
+
+ case other =>
Review comment:
Let me leave some comments, running `canPruneOn` twice seems redundant.
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