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Date: Mon, 18 Feb 2008 05:12:34 -0800 (PST)
From: "Thomas Nielsen (JIRA)" <jira@apache.org>
To: derby-dev@db.apache.org
Subject: [jira] Closed: (DERBY-3349) Nested WHERE EXISTS queries need
 improved testing
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     [ https://issues.apache.org/jira/browse/DERBY-3349?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Thomas Nielsen closed DERBY-3349.
---------------------------------


Closing the issue now that the updated test has been added/merged to trunk (10.4) and 10.3.

Please feel free to reopen if you think there are more queries that needs to be tested.


> 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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