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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-9740) Support group windows over intervals of months
Date Tue, 04 Dec 2018 09:33:00 GMT

    [ https://issues.apache.org/jira/browse/FLINK-9740?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16708463#comment-16708463
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ASF GitHub Bot commented on FLINK-9740:
---------------------------------------

twalthr commented on issue #7228: [FLINK-9740][Table API &SQL] Support group windows over
intervals of months
URL: https://github.com/apache/flink/pull/7228#issuecomment-444032456
 
 
   I think you should post a little design outline first. Because this change is not trivial.

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> Support group windows over intervals of months 
> -----------------------------------------------
>
>                 Key: FLINK-9740
>                 URL: https://issues.apache.org/jira/browse/FLINK-9740
>             Project: Flink
>          Issue Type: New Feature
>          Components: Table API &amp; SQL
>    Affects Versions: 1.5.0
>            Reporter: Timo Walther
>            Assignee: Renjie Liu
>            Priority: Major
>              Labels: pull-request-available
>
> Currently, time-based group windows can be defined using intervals of milliseconds such
as {{.window(Tumble over 10.minutes on 'rowtime as 'w)}}. For some use cases it might useful
to define windows of months (esp. in event-time) that work even with leap years and other
special time cases.
> The following should be supported in Table API & SQL:
> {{.window(Tumble over 1.month on 'rowtime as 'w)}}
> {{.window(Tumble over 1.quarter on 'rowtime as 'w)}}
> {{.window(Tumble over 1.year on 'rowtime as 'w)}}



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