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https://issues.apache.org/jira/browse/OPENJPA-1440?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Heath Thomann updated OPENJPA-1440:
-----------------------------------
Attachment: OPENJPA-1440-1.2.x.patch.txt
OPENJPA-1440-1.3.x.patch.txt
Updated header per Pinaki.
> Allow COUNT(*) instead of COUNT(t0.id) for simple queries as an option
> ----------------------------------------------------------------------
>
> Key: OPENJPA-1440
> URL: https://issues.apache.org/jira/browse/OPENJPA-1440
> Project: OpenJPA
> Issue Type: Improvement
> Reporter: Pinaki Poddar
> Assignee: Pinaki Poddar
> Fix For: 2.0.0-beta
>
> Attachments: OPENJPA-1440-1.2.x.patch.txt,
> OPENJPA-1440-1.3.x.patch.txt
>
>
> SQL generated for "select p for PObject p" is SELECT COUNT(t0.id) FROM
> POBJECT t0". This is valid and according to JPQL spec which does not accept
> COUNT(*).
> However, JDBC Drivers for legacy databases may not always support
> COUNT(columnName) as reported in [1].
> OpenJPA should support such cases with a boolean option
> DBDictionary.useWildCardForCount.
> [1] http://n2.nabble.com/COUNT-t-to-COUNT-tc4176827.html#a4176827
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