Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/17636#discussion_r111833515
--- Diff:
sql/core/src/test/resources/sql-tests/results/subquery/negative-cases/invalid-correlation.sql.out
---
@@ -50,17 +50,67 @@ grouping expressions sequence is empty, and 't2.`t2b`'
is not an aggregate funct
-- !query 4
-select *
-from t1
-where t1a in (select min(t2a)
- from t2
- group by t2c
- having t2c in (select max(t3c)
- from t3
- group by t3b
- having t3b > t2b ))
+SELECT *
+FROM t1
+WHERE t1a in (SELECT min(t2a)
+ FROM t2
+ GROUP by t2c
--- End diff --
Nit: `by` -> `BY`
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