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https://issues.apache.org/jira/browse/DERBY-2998?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12551544
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Daniel John Debrunner commented on DERBY-2998:
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Thanks Thomas, I agree that the implementation path you are on is good
approach, but at some point someone will want to produce a release that is
branched off the trunk, we just need to ensure that non-standard use of
ROW_NUMBER is not supported. That would either mean disabling ROW_NUMBER in the
branch (e.g. 10.4) or not supporting non-standard use in the trunk at any time.
Probably any decision can be deferred until closer to the next release, which
is due in Feb.
Note that the 10.4 wiki page does indicate that ROW_NUMBER() is to be supported
in 10.4, from the comments in this issue it seems unlikely a conformant
ROW_NUMBER will be finished by then??
> 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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