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From "ASF subversion and git services (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DERBY-6577) Quantified comparison returns wrong result in CASE, COALESCE, IN and BETWEEN
Date Fri, 16 May 2014 11:23:07 GMT

    [ https://issues.apache.org/jira/browse/DERBY-6577?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13998579#comment-13998579
] 

ASF subversion and git services commented on DERBY-6577:
--------------------------------------------------------

Commit 1594816 from [~knutanders] in branch 'code/trunk'
[ https://svn.apache.org/r1594816 ]

DERBY-6577: Quantified comparison returns wrong result in CASE, COALESCE, IN and BETWEEN

ValueNodeList.preprocess() should update the list with the rewritten expressions.

> Quantified comparison returns wrong result in CASE, COALESCE, IN and BETWEEN
> ----------------------------------------------------------------------------
>
>                 Key: DERBY-6577
>                 URL: https://issues.apache.org/jira/browse/DERBY-6577
>             Project: Derby
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 10.11.0.0, 10.10.2.0
>            Reporter: Knut Anders Hatlen
>            Assignee: Knut Anders Hatlen
>         Attachments: d6577-1a.diff, d6577-2a.diff
>
>
> I'm seeing this on head of trunk:
> {noformat}
> ij> select c, c = all (values 'Y'), case when c = all (values 'Y') then true else
false end from (values 'Y', 'N') v(c);
> C|2    |3    
> -------------
> Y|true |false
> N|false|true 
> 2 rows selected
> {noformat}
> Column 2 and column 3 should have the same value, but something seems to go wrong when
the quantified comparison is used in a CASE expression.
> I'm seeing the expected result on 10.10.2.0, though:
> {noformat}
> ij> select c, c = all (values 'Y'), case when c = all (values 'Y') then true else
false end from (values 'Y', 'N') v(c);
> C|2    |3    
> -------------
> Y|true |true 
> N|false|false
> 2 rows selected
> {noformat}



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