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From "garpinc (JIRA)" <j...@apache.org>
Subject [jira] [Created] (OPENJPA-2265) An unnecessary select statement appears to be occurring on primary key table
Date Fri, 21 Sep 2012 14:23:07 GMT
garpinc created OPENJPA-2265:
--------------------------------

             Summary: 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


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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