viirya commented on a change in pull request #32303:
URL: https://github.com/apache/spark/pull/32303#discussion_r619571428
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/CheckAnalysis.scala
##########
@@ -857,12 +865,21 @@ trait CheckAnalysis extends PredicateHelper with
LookupCatalog {
}
}
+ // Check whether the logical plan node can host outer references.
+ // A `Project` can host outer references if it is inside a lateral join.
Otherwise,
+ // only Filter can only outer references.
+ def canHostOuter(plan: LogicalPlan): Boolean = plan match {
+ case _: Filter => true
+ case _: Project => isLateral
+ case _ => false
+ }
+
// Make sure a plan's expressions do not contain :
// 1. Aggregate expressions that have mixture of outer and local
references.
// 2. Expressions containing outer references on plan nodes other than
Filter.
Review comment:
Also update this comment?
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
For queries about this service, please contact Infrastructure at:
[email protected]
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
