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From "Lefty Leverenz (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-10555) Improve windowing spec of range based windowing to support additional range formats
Date Thu, 04 Jun 2015 06:26:38 GMT

    [ https://issues.apache.org/jira/browse/HIVE-10555?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14572250#comment-14572250
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Lefty Leverenz commented on HIVE-10555:
---------------------------------------

Doc note:  Subtasks that need documentation have been marked with TODOC1.3 labels.

> Improve windowing spec of range based windowing to support additional range formats
> -----------------------------------------------------------------------------------
>
>                 Key: HIVE-10555
>                 URL: https://issues.apache.org/jira/browse/HIVE-10555
>             Project: Hive
>          Issue Type: Improvement
>          Components: PTF-Windowing
>    Affects Versions: 1.3.0
>            Reporter: Aihua Xu
>            Assignee: Aihua Xu
>             Fix For: 1.3.0
>
>
> Currently windowing function only supports the formats of {{x preceding and current}},
{{x preceding and y following}}, {{current and y following}}. 
> Windowing of {{x preceding and y preceding}} and {{x following and y following}} doesn't
work properly.
> The following functions should be supported.
> First_value(), last_value(), sum(), avg() , count(), min(), max() 



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