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https://issues.apache.org/jira/browse/DERBY-495?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12750085#action_12750085
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Dag H. Wanvik commented on DERBY-495:
-------------------------------------
Thanks for the patch, Kim! Some small comments:
> COALESCE ( expression, expression[, expression]... )
^ add a space before
left bracket for legibility
Prefer * repetition operator in the grammar production. The manual is
schizophrenic on whether to use * or ..., though. But * dominates, I
counted 25 occurences vs. 2-3.
COALESCE ( expression, expression [, expression]* )
Maybe it would be nice to have the second example take three args? E.g.
ij> select coalesce (smallintcol, bigintcol, intcol) from temp;
1
--------------------
1
2
3
> COALESCE
> --------
>
> Key: DERBY-495
> URL: https://issues.apache.org/jira/browse/DERBY-495
> Project: Derby
> Issue Type: Bug
> Components: Documentation
> Affects Versions: 10.0.2.0
> Environment: n/a
> Reporter: Paul Jenkins
> Assignee: Kim Haase
> Priority: Minor
> Attachments: DERBY-495.diff, rreffunccoalesce.html
>
>
> The COALESCE function has been implemeted since 10.0.2.0 (at least) but isn't
> documented.
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