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https://issues.apache.org/jira/browse/CALCITE-4664?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17371861#comment-17371861
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duan xiong commented on CALCITE-4664:
-------------------------------------
[~julianhyde] I do some test in hive and postgresql , In hive, this Sql above
is valid(must don't have a comma before 'GROUPING SETS',If have, It will filed
because ParseExceprion ). but in postgresql, There must be a comma before
'GROUPING SETS'.
!捕获.PNG!
> When group by is same as sub-query, grouping sets are missing
> -------------------------------------------------------------
>
> Key: CALCITE-4664
> URL: https://issues.apache.org/jira/browse/CALCITE-4664
> Project: Calcite
> Issue Type: Bug
> Components: core
> Reporter: xiejiajun
> Priority: Major
>
> For example:
> {code:java}
> SELECT
> t.ID, t.NAME, count(t.AGE) T_AGE
> FROM
> (SELECT u.ID, u.NAME, u.AGE
> FROM USERS u
> GROUP BY u.ID, u.NAME, u.AGE
> ) t
> GROUP BY t.ID, t.NAME, t.AGE
> GROUPING SETS(
> (t.ID, t.NAME),
> (t.ID, t.NAME, t.AGE)
> )
> {code}
> will be
> {code}
> SELECT u.ID, u.NAME, u.AGE
> FROM USERS u
> GROUP BY u.ID, u.NAME, u.AGE
> {code}
> groupings set is missing
>
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