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https://issues.apache.org/jira/browse/TAJO-1420?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dongjoon Hyun updated TAJO-1420:
--------------------------------
Issue Type: Sub-task (was: Improvement)
Parent: TAJO-256
> Support GROUPING SET syntax
> ---------------------------
>
> Key: TAJO-1420
> URL: https://issues.apache.org/jira/browse/TAJO-1420
> Project: Tajo
> Issue Type: Sub-task
> Components: parser
> Affects Versions: 0.10.0
> Reporter: Dongjoon Hyun
> Assignee: Dongjoon Hyun
> Priority: Minor
> Fix For: 0.10.1
>
>
> This issue is about SQL parsing only. As of Tajo 0.10.0,
> {code:sql}
> default> create table t(a int, b int);
> OK
> default> select * from t group by cube(a,b);
> ERROR: Cube is not supported yet
> default> select * from t group by rollup(a,b);
> ERROR: Rollup is not supported yet
> default> select * from t group by grouping set(a,b);
> ERROR: syntax error at or near 'grouping'
> {code}
> The last error should be like the following.
> {code:sql}
> default> select * from t group by grouping set(a,b);
> ERROR: GroupingSet is not supported yet
> {code}
> As you know,
> {code:sql}
> GROUP BY a, b, c WITH CUBE
> {code}
> is equivalent to
> {code:sql}
> GROUP BY a, b, c GROUPING SETS ( (a, b, c), (a, b), (b, c), (a, c), (a), (b),
> (c), ( ))
> {code}
> And,
> {code:sql}
> GROUP BY a, b, c, WITH ROLLUP
> {code}
> is equivalent to
> {code:sql}
> GROUP BY a, b, c GROUPING SETS ( (a, b, c), (a, b), (a), ( ))
> {code}
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