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https://issues.apache.org/jira/browse/OPENJPA-2265?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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garpinc updated OPENJPA-2265:
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Attachment: testselect0.zip
test case to try is the testSelect0 one. When run in the console you will see
the select in the trace right after the last alter table
> An unnecessary select statement appears to be occurring on primary key table
> ----------------------------------------------------------------------------
>
> Key: OPENJPA-2265
> URL: https://issues.apache.org/jira/browse/OPENJPA-2265
> Project: OpenJPA
> Issue Type: Bug
> Components: jdbc
> Affects Versions: 2.2.0
> Reporter: garpinc
> Attachments: testselect0.zip
>
>
> This issue pertains to
> http://openjpa.208410.n2.nabble.com/Can-someone-explain-this-OpenJPA-trace-td7580862.html
> Basically I'm seeing an unnecessary select statement of the form:
> 1487 test TRACE [main] openjpa.jdbc.SQL - <t 1920940938, conn 488448102>
> executing prepstmnt 163450945 SELECT t0.otherField1, t0.uniqueField1 FROM
> KeyClass t0 WHERE t0.pk = ? [params=(long) 0]
> My application does millions of these so performance is suffering. I'll be
> attaching a test case to illustrate. testselect0.zip
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