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Posted to derby-dev@db.apache.org by "Dyre Tjeldvoll (JIRA)" <ji...@apache.org> on 2008/02/18 13:38:35 UTC

[jira] Commented: (DERBY-3349) Nested WHERE EXISTS queries need improved testing

    [ https://issues.apache.org/jira/browse/DERBY-3349?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12569881#action_12569881 ] 

Dyre Tjeldvoll commented on DERBY-3349:
---------------------------------------

Merged to 10.3 in revision 628704.

> Nested WHERE EXISTS queries need improved testing
> -------------------------------------------------
>
>                 Key: DERBY-3349
>                 URL: https://issues.apache.org/jira/browse/DERBY-3349
>             Project: Derby
>          Issue Type: Improvement
>          Components: Test
>    Affects Versions: 10.2.2.0, 10.3.2.1
>            Reporter: Thomas Nielsen
>            Assignee: Thomas Nielsen
>             Fix For: 10.3.2.2, 10.4.0.0
>
>         Attachments: d3349-1.diff, d3349-1.stat, d3349-2.diff, d3349-3.diff
>
>
> DERBY-3301 reported an error in subquery flattening of nested WHERE EXISTS clauses, or WHERE EXISTS subqueries. The query returned the wrong number of rows. 
> There is currently some tests for WHERE EXISTS, but none for nested WHERE EXISTS clauses.
> See DERBY-3301 for a full sql repro.

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