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https://issues.apache.org/jira/browse/DERBY-3002?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Bryan Pendleton updated DERBY-3002:
-----------------------------------
Attachment: rollupNullability.diff
Added more tests, many of which were suggested by Knut. Changed GroupByNode
to set nullability on for ROLLUP group by statements. Fixed some more
whitespace.
I don't understand the behavior on empty result sets. The test includes some
test
cases in that area, but I'm not sure if the results are correct.
Still need to add test cases in the area of sort-avoidance group by, distinct
group by,
and probably other areas.
> Add support for GROUP BY ROLLUP
> -------------------------------
>
> Key: DERBY-3002
> URL: https://issues.apache.org/jira/browse/DERBY-3002
> Project: Derby
> Issue Type: New Feature
> Components: SQL
> Affects Versions: 10.4.1.3
> Reporter: Bryan Pendleton
> Assignee: Bryan Pendleton
> Priority: Minor
> Attachments: fixWhiteSpace.diff, IncludesASimpleTest.diff,
> prototypeChangeNoTests.diff, rollupNullability.diff, useLookahead.diff
>
>
> Provide an implementation of the ROLLUP form of multi-dimensional grouping
> according to the SQL standard.
> See http://wiki.apache.org/db-derby/OLAPRollupLists for some more detailed
> information about this aspect of the SQL standard.
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