Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/22957#discussion_r237532156
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/Analyzer.scala
---
@@ -2542,10 +2542,10 @@ object EliminateUnions extends Rule[LogicalPlan] {
* rule can't work for those parameters.
*/
object CleanupAliases extends Rule[LogicalPlan] {
- private def trimAliases(e: Expression): Expression = {
+ private[catalyst] def trimAliases(e: Expression): Expression = {
e.transformDown {
- case Alias(child, _) => child
- case MultiAlias(child, _) => child
+ case Alias(child, _) => trimAliases(child)
--- End diff --
it's `transformDown`, why doesn't it work?
---
---------------------------------------------------------------------
To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org
For additional commands, e-mail: reviews-h...@spark.apache.org
