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From "Harish Butani (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-4197) Bring windowing support inline with SQL Standard
Date Mon, 18 Mar 2013 22:31:17 GMT

    [ https://issues.apache.org/jira/browse/HIVE-4197?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13605750#comment-13605750
] 

Harish Butani commented on HIVE-4197:
-------------------------------------

Alan, thanks for reviewing.

- Have explained the concept of Source Windowspec in the previous response to Ashutosh.
- The stable sort issue also crops up when there multiple rows with the same Order expressions.
Again, see previous response.
- The Window Frame Range I was documenting was [start,end), so the end side is open ended.
This an artifact of our implementation...
- Range support is there; I think the changes we need to make are manageable. But if we run
into major blocks, then agree we can defer this. 
                
> Bring windowing support inline with SQL Standard
> ------------------------------------------------
>
>                 Key: HIVE-4197
>                 URL: https://issues.apache.org/jira/browse/HIVE-4197
>             Project: Hive
>          Issue Type: Bug
>          Components: PTF-Windowing
>            Reporter: Harish Butani
>         Attachments: WindowingSpecification.pdf
>
>
> The current behavior defers from the Standard in several significant places.
> Please review attached doc; there are still a few open issues. Once we agree on the behavior,
can proceed with fixing the implementation.

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