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From "Hequn Cheng (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (FLINK-10977) Add FlatAggregate operator to unbounded streaming Table API
Date Tue, 04 Dec 2018 07:17:00 GMT

     [ https://issues.apache.org/jira/browse/FLINK-10977?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Hequn Cheng updated FLINK-10977:
--------------------------------
    Summary: Add FlatAggregate operator to unbounded streaming Table API  (was: Add UnBounded
FlatAggregate operator to streaming Table API)

> Add FlatAggregate operator to unbounded streaming Table API
> -----------------------------------------------------------
>
>                 Key: FLINK-10977
>                 URL: https://issues.apache.org/jira/browse/FLINK-10977
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Table API &amp; SQL
>            Reporter: sunjincheng
>            Assignee: Hequn Cheng
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 1.8.0
>
>
> Add FlatAggregate operator to streaming 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
> .groupBy('a) // leave out groupBy-clause to define global table aggregates
> .flatAgg(fun: TableAggregateFunction) // output has columns 'a, 'b, 'c
> .select('a, 'c){code}



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