Github user hvanhovell commented on a diff in the pull request:
https://github.com/apache/spark/pull/12539#discussion_r60696559
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/Optimizer.scala
---
@@ -1536,17 +1560,22 @@ object RewritePredicateSubquery extends
Rule[LogicalPlan] with PredicateHelper {
// Filter the plan by applying left semi and left anti joins.
withSubquery.foldLeft(newFilter) {
- case (p, Exists(sub)) =>
+ case (p, Exists(sub, _)) =>
val (resolved, conditions) = pullOutCorrelatedPredicates(sub, p)
Join(p, resolved, LeftSemi, conditions.reduceOption(And))
- case (p, Not(Exists(sub))) =>
+ case (p, Not(Exists(sub, _))) =>
val (resolved, conditions) = pullOutCorrelatedPredicates(sub, p)
Join(p, resolved, LeftAnti, conditions.reduceOption(And))
case (p, in: InSubQuery) =>
- val (resolved, conditions) = pullOutCorrelatedPredicates(in, p)
- Join(p, resolved, LeftSemi, conditions.reduceOption(And))
+ val (newP, resolved, conditions) =
pullOutCorrelatedPredicates(in, p)
--- End diff --
`newP` is `p` when we don't have to have an inmediate projection right? If
it is, then we don't need the if/else block.
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