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From "Dzmitry Kazimirchyk (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CAY-1210) mysql does not use index for case insensitive searches
Date Thu, 15 Sep 2011 08:36:08 GMT

    [ https://issues.apache.org/jira/browse/CAY-1210?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13105210#comment-13105210
] 

Dzmitry Kazimirchyk commented on CAY-1210:
------------------------------------------

Committed the changes which will enable us to do this. Anyway, we still need to configure
Jenkins to work with our new version naming pattern: http://markmail.org/message/m4x3lxtcoxlsi6r2

> mysql does not use index for case insensitive searches
> ------------------------------------------------------
>
>                 Key: CAY-1210
>                 URL: https://issues.apache.org/jira/browse/CAY-1210
>             Project: Cayenne
>          Issue Type: Improvement
>          Components: Database integration
>            Reporter: Ari Maniatis
>            Assignee: Ari Maniatis
>             Fix For: 3.1 (final)
>
>         Attachments: case-insensitive-search.patch, case-insensitive-search.patch
>
>
> When performing a case insensitive search Cayenne spits out SQL which looks like this
> SELECT .... WHERE upper(name) LIKE upper("fred")
> This prevents any index being used for the search. Since mysql already performed case
insensitive searches on text fields we need to suppress the 'upper' functions being used in
these situations. All searches on these fields are already case insensitive.
> http://dev.mysql.com/doc/refman/5.0/en/case-sensitivity.html

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