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Posted to issues@flink.apache.org by "Timo Walther (JIRA)" <ji...@apache.org> on 2016/08/31 14:13:20 UTC

[jira] [Commented] (FLINK-2980) Add CUBE/ROLLUP/GROUPING SETS operator in Table API.

    [ https://issues.apache.org/jira/browse/FLINK-2980?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15452344#comment-15452344 ] 

Timo Walther commented on FLINK-2980:
-------------------------------------

This tasks also includes implementing the functions {{GROUPING_ID}}, {{GROUP_ID}}.

> Add CUBE/ROLLUP/GROUPING SETS operator in Table API.
> ----------------------------------------------------
>
>                 Key: FLINK-2980
>                 URL: https://issues.apache.org/jira/browse/FLINK-2980
>             Project: Flink
>          Issue Type: New Feature
>          Components: Documentation, Table API & SQL
>            Reporter: Chengxiang Li
>            Assignee: Chengxiang Li
>         Attachments: Cube-Rollup-GroupSet design doc in Flink.pdf
>
>
> Computing aggregates over a cube/rollup/grouping sets of several dimensions is a common operation in data warehousing. It would be nice to have them in Table API.



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