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From "Michael Dick (JIRA)" <j...@apache.org>
Subject [jira] Assigned: (OPENJPA-1308) shouldn't always use CAST with UPPER and LOWER for DB2
Date Wed, 21 Oct 2009 16:11:01 GMT

     [ https://issues.apache.org/jira/browse/OPENJPA-1308?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Michael Dick reassigned OPENJPA-1308:
-------------------------------------

    Assignee: Michael Dick

> shouldn't always use CAST with UPPER and LOWER for DB2
> ------------------------------------------------------
>
>                 Key: OPENJPA-1308
>                 URL: https://issues.apache.org/jira/browse/OPENJPA-1308
>             Project: OpenJPA
>          Issue Type: Improvement
>          Components: sql
>    Affects Versions: 1.0.3, 1.2.1, 2.0.0-M2
>         Environment: DB2
>            Reporter: B.J. Reed
>            Assignee: Michael Dick
>            Priority: Minor
>             Fix For: 1.0.4, 1.2.2, 2.0.0
>
>         Attachments: OPENJPA-1308-1.0.x.patch, OPENJPA-1308-1.2.x.patch, OPENJPA-1308-trunk.patch
>
>
> Using DB2, when a user uses the UPPER or LOWER function, the field is automatically CAST
to a varchar.  It would be nice if OpenJPA were a little smarter and only used CAST when necessary.
 Using the CAST causes any indexes not to be used so performance won't be what it should.
> I saw some other DB2 functions that also are always CAST, so we may need to improve these
also.

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