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https://issues.apache.org/jira/browse/DERBY-5557?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kim Haase resolved DERBY-5557.
------------------------------
Resolution: Fixed
Fix Version/s: 10.9.0.0
Issue & fix info: (was: Patch Available)
Thanks, Knut! Haven't seen a commit email after several hours, but maybe it's
just me.
Committed patch DERBY-5557-2.diff to documentation trunk at revision 1325247.
> NULLIF topic in reference manual should explain NULLIF
> ------------------------------------------------------
>
> Key: DERBY-5557
> URL: https://issues.apache.org/jira/browse/DERBY-5557
> Project: Derby
> Issue Type: Improvement
> Components: Documentation
> Affects Versions: 10.8.2.2
> Reporter: Knut Anders Hatlen
> Assignee: Kim Haase
> Fix For: 10.9.0.0
>
> Attachments: DERBY-5557-2.diff, DERBY-5557-2.stat, DERBY-5557-2.zip,
> DERBY-5557.diff, rrefcasenullif.html
>
>
> The section describing NULLIF in the reference manual is a bit cryptic.
> http://db.apache.org/derby/docs/10.8/ref/rrefcasenullif.html
> It says that NULLIF is used for conditional expressions, and that it is
> similar to CASE, but it doesn't say in plain words how it works. It would be
> good if it could mention that NULLIF returns NULL if the two arguments are
> equal, and that it returns the first argument if they are not equal.
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