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From "Thomas Nielsen (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-2998) Add support for ROW_NUMBER() window function
Date Wed, 29 Aug 2007 11:05:31 GMT

    [ https://issues.apache.org/jira/browse/DERBY-2998?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12523537

Thomas Nielsen commented on DERBY-2998:

Thanks for chiming in Bryan!

My plan for the prototype patch was, like you propose, to disregard the windowing entirely
and enable simple queries like
   select row_number(), ...  from t
and treat row_number() is a simple scalar function.

After having another look at how 'select a+b from t'  works, I'm finally getting somewhere

Currently at the point where I get one generated value per row returned in the ResultSet,
although they are all the default value, they do come from my RowNumberColumnNode class. Now
I need to find a way to do the incrementation.

> 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
> 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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