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https://issues.apache.org/jira/browse/DERBY-4397?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12800663#action_12800663
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Dag H. Wanvik commented on DERBY-4397:
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Committed patch derby-4397-sortavoidance-a as svn 899588.


> Allow ORDER BY in subqueries
> ----------------------------
>
>                 Key: DERBY-4397
>                 URL: https://issues.apache.org/jira/browse/DERBY-4397
>             Project: Derby
>          Issue Type: Improvement
>          Components: SQL
>            Reporter: Dag H. Wanvik
>            Assignee: Dag H. Wanvik
>         Attachments: derby-4397-1.diff, derby-4397-1.stat, derby-4397-2.diff, 
> derby-4397-2.stat, derby-4397-all-subqueries.diff, 
> derby-4397-all-subqueries.stat, derby-4397-insert-from-exists.diff, 
> derby-4397-insert-from-exists.stat, derby-4397-sortavoidance-a.diff, 
> derby-4397-sortavoidance-a.stat, orderBySpec.html, orderBySpec.html, 
> orderBySpec.html, orderBySpec.html, orderBySpec.html
>
>
> SQL 2008 allows ORDER BY to be specified in subqueries. In conjunction with 
> OFFSET/FETCH and/or ROW_NUMBER
> meaningful subqueries with row ordering may be formulated. Cf. MySQL's LIMIT 
> may be used in subqueries as well.
> Note that OFFSET/FETCH is currently not allowed in subqueries, either.

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