Github user dilipbiswal commented on a diff in the pull request:
https://github.com/apache/spark/pull/16954#discussion_r101597000
--- Diff: sql/core/src/test/scala/org/apache/spark/sql/SubquerySuite.scala
---
@@ -622,7 +622,12 @@ class SubquerySuite extends QueryTest with
SharedSQLContext {
test("SPARK-15370: COUNT bug with attribute ref in subquery input and
output ") {
checkAnswer(
- sql("select l.b, (select (r.c + count(*)) is null from r where l.a =
r.c) from l"),
+ sql(
--- End diff --
In this test, the query is not a valid query as its missing group by. It
used to pass before as we implicitly added r.c into aggregate grouping as part
of pulling up correlated predicates in analyzer.
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