Github user nsyca commented on a diff in the pull request:
https://github.com/apache/spark/pull/16012#discussion_r89664100
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/Analyzer.scala
---
@@ -989,7 +989,7 @@ class Analyzer(
withPosition(u) {
try {
outer.resolve(nameParts, resolver) match {
- case Some(outerAttr) => OuterReference(outerAttr)
+ case Some(outerAttr) => OuterReference(outerAttr)()
--- End diff --
Another interesting case to consider:
````sql
select ...
from t1
where t1.c1 in (select sum(t1.c2) from t2)
````
If we support correlated columns in SELECT clause, do we build the
Aggregate on T2 or T1?
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