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https://issues.apache.org/jira/browse/DERBY-2887?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Bryan Pendleton updated DERBY-2887:
-----------------------------------
Attachment: prototypeCodeNoTests.diff
Attached is 'prototype_code_no_tests.diff', which is NOT for commit. I've
started experimenting with some changes, and I wanted to attach them so I
wouldn't lose them, but I've still got more work to do.
This first attempt modifies the compare(DVD) api so that the caller can pass in
a boolean indicating whether NULLS should sort FIRST or LAST, and modifies the
sorter to use that new api. The patch also has changes to the grammar and the
compiler to parse the user's <null ordering> specification and track it in the
data structures.
> NULLS FIRST / LAST for ORDER BY
> -------------------------------
>
> Key: DERBY-2887
> URL: https://issues.apache.org/jira/browse/DERBY-2887
> Project: Derby
> Issue Type: Improvement
> Components: SQL
> Reporter: Christian d'Heureuse
> Assignee: Bryan Pendleton
> Priority: Minor
> Attachments: prototypeCodeNoTests.diff
>
>
> I suggest to implement the "null ordering" option for the "ORDER BY" clause:
> According to the SQL standard, 10.10 <sort specification list>:
> <null ordering> ::=
> NULLS FIRST
> | NULLS LAST
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