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Posted to issues@calcite.apache.org by "Stamatis Zampetakis (Jira)" <ji...@apache.org> on 2019/12/12 06:51:00 UTC

[jira] [Updated] (CALCITE-3590) Support SQL hints for Aggregate

     [ https://issues.apache.org/jira/browse/CALCITE-3590?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Stamatis Zampetakis updated CALCITE-3590:
-----------------------------------------
    Summary: Support SQL hints for Aggregate  (was: Support SQL hints for Aggregate.)

> Support SQL hints for Aggregate
> -------------------------------
>
>                 Key: CALCITE-3590
>                 URL: https://issues.apache.org/jira/browse/CALCITE-3590
>             Project: Calcite
>          Issue Type: Sub-task
>          Components: core
>    Affects Versions: 1.21.0
>            Reporter: Shuo Cheng
>            Priority: Major
>             Fix For: 1.22.0
>
>
> Currently in CALCITE-482, hints are only supported for Project, Join and TableScan. It's also necessary to support hints for Aggregate so as to enable fine grained Aggregate configuration, e.g., two-stage-aggregation.
> SELECT /*+ TWO_STAGE_AGG(true) */ 
>  dep_id,
>  grade, 
>  avg(annual_salary),
>  min(annual_salary),
>  max(annual_salary)
>  FROM T
>  GROUP BY dep_id, grade;



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