[jira] [Updated] (HIVE-9531) remove requirement that EXISTS subquery must be correlated

["Alexander Pivovarov (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-9531?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Alexander Pivovarov updated HIVE-9531:
--------------------------------------
    Description: 
lift the documented restriction that a exists/not exists must involve a correlated sub-query

SQL:
{code}
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.
{code}

  was:
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.


> 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:
> {code}
> 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.
> {code}



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