N Campbell created HIVE-9531:
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Summary: remove requirement that EXISTS subquery must be correlated
Key: HIVE-9531
URL: https://issues.apache.org/jira/browse/HIVE-9531
Project: Hive
Issue Type: Improvement
Components: SQL
Reporter: N Campbell
lift the documented restriction that a exists/not exists must involve a
correlated sub-query
SQL: select rnum, c1, c2 from tjoin2 where exists ( select c1 from tjoin1)
FAILED: SemanticException Line 1:62 Invalid SubQuery expression 'c1' in
definition of SubQuery sq_1 [
exists ( select c1 from tjoin1)
] used as sq_1 at Line 1:38: For Exists/Not Exists operator SubQuery must be
Correlated.
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