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Date: Thu, 13 Dec 2007 08:51:43 -0800 (PST)
From: "Mamta A. Satoor (JIRA)" <jira@apache.org>
To: derby-dev@db.apache.org
Subject: [jira] Commented: (DERBY-2998) Add support for ROW_NUMBER() window
 function
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    [ https://issues.apache.org/jira/browse/DERBY-2998?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12551555 ] 

Mamta A. Satoor commented on DERBY-2998:
----------------------------------------

I thought I would chime in here and say that ROW_NUMBER OVER ()  is SQL standards compliant. 

SQL spec has following (Section 7.11 <window clause>)
<window specification> ::=
<left paren> <window specification details> <right paren>
<window specification details> ::=
[ <existing window name> ]
[ <window partition clause> ]
[ <window order clause> ]
[ <window frame clause> ]

This indicates that window specificatoin details are optional.

> Add support for ROW_NUMBER() window function
> --------------------------------------------
>
>                 Key: DERBY-2998
>                 URL: https://issues.apache.org/jira/browse/DERBY-2998
>             Project: Derby
>          Issue Type: Sub-task
>          Components: SQL
>            Reporter: Thomas Nielsen
>            Assignee: Thomas Nielsen
>            Priority: Minor
>         Attachments: d2998-4.diff, d2998-4.stat, d2998-5.diff, d2998-5.stat, d2998-6.diff, d2998-6.stat, d2998-test.diff, d2998-test.stat, d2998-test2.diff, d2998-test2.stat
>
>
> As part of implementing the overall OLAP Operations features of SQL (DERBY-581), implement the ROW_NUMBER() window function.
> More information about this feature is available at http://wiki.apache.org/db-derby/OLAPRowNumber

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