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https://issues.apache.org/jira/browse/DERBY-2998?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12572040#action_12572040
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thomanie edited comment on DERBY-2998 at 2/25/08 2:03 AM:
----------------------------------------------------------------
d2998-15 changes:
- adds abstract class WindowFunctionColumnNode, which RowNumberColumnNode
subclasses. This makes any instanceof-checks in other parts of code generic.
Common code moved from RNCN to WFCN.
- simplified pulling WindowNodes into the querytree in
SelectNode.genProjectRestrictNode.
The 15 patch still has the resultset numbering problem in the RCLof the PRN
that was originally a FromSubquery.
was (Author: thomanie):
d2998-15 changes:
- adds abstract class WindowFunctionColumnNode, which RowNumberColumnNode
subclasses. This makes any instanceof-checks in other parts of code generic.
Common code moved from RNCN to WFCN.
- simplified pulling WindowNodes into the querytree in
SelectNode.genProjectRestrictNode.
The 15 patch still has the resultset numbering in the RCLof the PRN that was
originally a FromSubquery.
> 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: d2998-10.diff, d2998-10.stat, d2998-11.diff,
> d2998-12.diff, d2998-12.stat, d2998-13.diff, d2998-13.stat, d2998-14.diff,
> d2998-14.stat, d2998-15.diff, d2998-15.stat, d2998-4.diff, d2998-4.stat,
> d2998-5.diff, d2998-5.stat, d2998-6.diff, d2998-6.stat, d2998-7.diff,
> d2998-7.stat, d2998-8.diff, d2998-8.stat, d2998-9-derby.log, d2998-9.diff,
> d2998-9.stat, d2998-doc-1.diff, d2998-doc-1.stat, d2998-test.diff,
> d2998-test.stat, d2998-test2.diff, d2998-test2.stat, d2998-test3.diff,
> d2998-test3.stat, d2998-test4.diff, d2998-test4.stat, d2998-test6.diff,
> d2998-test7.diff
>
>
> 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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