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From "Michael Dick (JIRA)" <j...@apache.org>
Subject [jira] Commented: (OPENJPA-511) Unable to execute native queries which start with the WITH keyword.
Date Thu, 07 Feb 2008 16:10:08 GMT

    [ https://issues.apache.org/jira/browse/OPENJPA-511?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12566657#action_12566657
] 

Michael Dick commented on OPENJPA-511:
--------------------------------------

That's pretty much what the patch does, I used a Set instead of a List, and I didn't mess
with the callable statement checking though. I'm running the tests on 1.0.x now and I'll commit
when they're done. 


> Unable to execute native queries which start with the WITH keyword. 
> --------------------------------------------------------------------
>
>                 Key: OPENJPA-511
>                 URL: https://issues.apache.org/jira/browse/OPENJPA-511
>             Project: OpenJPA
>          Issue Type: Bug
>          Components: jdbc
>    Affects Versions: 1.0.1
>         Environment: DB2
>            Reporter: Michael Dick
>            Assignee: Michael Dick
>             Fix For: 1.1.0
>
>         Attachments: OPENJPA-511.patch.txt
>
>
> Some databases support using WITH ${var} AS (SELECT . . .) SELECT ${var}, . . . The variable
may be used in a future select statement.
> Currently OpenJPA checks whether a native query begins with "select" (case insensitive)
and throws an exception if an application calls getSingleResult() or getResultList() if select
isn't found.  As I understand it the WITH statement may only be used in conjunction with a
SELECT statement, so it should be safe to treat the WITH statement as a select. 
> I'm not sure how many databases support this syntax so it might be best to limit the
support to specific databases. 
> The only database to support the WITH statement that I know of is DB2, but this may apply
to other databases too. Additional documentation can be found in the DB2 infocenter : http://publib.boulder.ibm.com/infocenter/db2luw/v8/index.jsp?topic=/com.ibm.datatools.sqlbuilder.doc/topics/ruisqlbldrwth.html.


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