amaliujia commented on code in PR #45270:
URL: https://github.com/apache/spark/pull/45270#discussion_r1503516786


##########
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/plans/logical/AnalysisHelper.scala:
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@@ -250,6 +250,29 @@ trait AnalysisHelper extends QueryPlan[LogicalPlan] { 
self: LogicalPlan =>
     }
   }
 
+  /**
+   * Recursively transforms the expressions of a tree, first to all of its

Review Comment:
   Tried to rephrase the wording to emphasize the `bottom-up` over all the 
expressions of all the tree node.



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