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From "Lefty Leverenz (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-10650) Improve sum() function over windowing to support additional range formats
Date Sat, 23 May 2015 11:47:17 GMT

    [ https://issues.apache.org/jira/browse/HIVE-10650?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14557289#comment-14557289
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Lefty Leverenz commented on HIVE-10650:
---------------------------------------

Doc note:  This needs to be documented in the wiki for the 1.3.0 release.

* [Windowing and Analytics -- WINDOW clause | https://cwiki.apache.org/confluence/display/Hive/LanguageManual+WindowingAndAnalytics#LanguageManualWindowingAndAnalytics-WINDOWclause]

> Improve sum() function over windowing to support additional range formats
> -------------------------------------------------------------------------
>
>                 Key: HIVE-10650
>                 URL: https://issues.apache.org/jira/browse/HIVE-10650
>             Project: Hive
>          Issue Type: Sub-task
>          Components: PTF-Windowing
>            Reporter: Aihua Xu
>            Assignee: Aihua Xu
>              Labels: TODOC1.3
>             Fix For: 1.3.0
>
>         Attachments: HIVE-10650.patch
>
>
> Support the following windowing function {{x preceding and y preceding}} and {{x following
and y following}}.
> e.g.
> {noformat} 
> select sum(value) over (partition by key order by value rows between 2 preceding and
1 preceding) from tbl1;
> select sum(value) over (partition by key order by value rows between unbounded preceding
and 1 preceding) from tbl1;
> {noformat}



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