Github user mgaido91 commented on a diff in the pull request:
https://github.com/apache/spark/pull/22141#discussion_r211961738
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/subquery.scala
---
@@ -137,13 +137,21 @@ object RewritePredicateSubquery extends
Rule[LogicalPlan] with PredicateHelper {
plan: LogicalPlan): (Option[Expression], LogicalPlan) = {
var newPlan = plan
val newExprs = exprs.map { e =>
- e transformUp {
+ e transformDown {
--- End diff --
why did you change this?
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