[jira] [Created] (SPARK-36115) Handle the COUNT bug for correlated IN/EXISTS subquery

["Allison Wang (Jira)" <ji...@apache.org>]

Allison Wang created SPARK-36115:
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             Summary: Handle the COUNT bug for correlated IN/EXISTS subquery
                 Key: SPARK-36115
                 URL: https://issues.apache.org/jira/browse/SPARK-36115
             Project: Spark
          Issue Type: Sub-task
          Components: SQL
    Affects Versions: 3.2.0
            Reporter: Allison Wang


Correlated IN/EXISTS subqueries are also subject to the COUNT bug which is not handled.

{code:sql}
create view t1(c1, c2) as values (0, 1), (1, 2)
create view t2(c1, c2) as values (0, 2), (0, 3)

-- Example 1: IN subquery
select * from t1 where c1 in (select count(*) + 1 from t2 where t1.c1 = t2.c1)
-- Correct answer: (1, 2)
+---+---+
|c1 |c2 |
+---+---+
+---+---+

-- Example 2: EXISTS subquery
select * from t1 where exists (select count(*) from t2 where t1.c1 = t2.c1)
-- Correct answer: [(0, 1), (1, 2)]
+---+---+
|c1 |c2 |
+---+---+
|0  |1  |
+---+---+
{code}




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