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From "Ashutosh Chauhan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-10650) Improve sum() function over windowing to support additional range formats
Date Wed, 13 May 2015 20:38:01 GMT

    [ https://issues.apache.org/jira/browse/HIVE-10650?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14542662#comment-14542662
] 

Ashutosh Chauhan commented on HIVE-10650:
-----------------------------------------

I see.
+1

> 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
>         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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