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Posted to issues@flink.apache.org by "ASF GitHub Bot (JIRA)" <ji...@apache.org> on 2019/07/04 05:45:00 UTC

[jira] [Updated] (FLINK-13087) Add group window Aggregate operator to Table API

     [ https://issues.apache.org/jira/browse/FLINK-13087?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated FLINK-13087:
-----------------------------------
    Labels: pull-request-available  (was: )

> Add group window Aggregate operator to Table API
> ------------------------------------------------
>
>                 Key: FLINK-13087
>                 URL: https://issues.apache.org/jira/browse/FLINK-13087
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Table SQL / API
>            Reporter: Hequn Cheng
>            Assignee: Hequn Cheng
>            Priority: Major
>              Labels: pull-request-available
>
> Add Group Window Aggregate operator to Table API as described in [Google doc|https://docs.google.com/document/d/1tnpxg31EQz2-MEzSotwFzqatsB4rNLz0I-l_vPa5H4Q/edit#heading=h.q23rny2iglsr].
> The usage:
> {code:java}
> val res = tab
>  .window(Tumble over 15.minute on 'rowtime as 'w)
>  .groupBy('w, 'a) // leave out groupBy-clause to define global aggregates
>  .agg(fun: AggregateFunction)  // output has columns 'a, 'b, 'c
>  .select('a, 'c, 'w.start)
> {code}



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