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https://issues.apache.org/jira/browse/DERBY-6103?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13615221#comment-13615221
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Kim Haase commented on DERBY-6103:
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Thanks, Dag!
I am still a bit confused because I don't see the window clause anywhere in the
SQL syntax for a window function. That syntax appears to allow only
ROW_NUMBER() OVER ()
or
ROW_NUMBER() OVER window_name
> Improve documentation of ROW_NUMBER function
> --------------------------------------------
>
> Key: DERBY-6103
> URL: https://issues.apache.org/jira/browse/DERBY-6103
> Project: Derby
> Issue Type: Improvement
> Components: Documentation
> Affects Versions: 10.10.1.1
> Reporter: Dag H. Wanvik
> Assignee: Kim Haase
> Priority: Minor
> Attachments: DERBY-6103.diff, DERBY-6103.stat, DERBY-6103.zip
>
>
> The current documentation doesn't mention that we allow the window definition
> to be explicit.
> The restriction on WHERE clause no longer applies, nor does the sentence
> about ORDER BY not being allowed in subqueries. Cf. rreffuncrownumber.dita.
> Also, the documentation mentions that we don't support LIMIT, but not that we
> now support the FETCH/OFFSET clause, which is often a better option than
> ROW_NUMBER.
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