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From "Albert Lee (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (OPENJPA-2356) Use new Offset/Limit/ROWNUM features in DB2 family of databases for range queries
Date Mon, 06 May 2013 00:00:16 GMT

    [ https://issues.apache.org/jira/browse/OPENJPA-2356?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13649463#comment-13649463
] 

Albert Lee commented on OPENJPA-2356:
-------------------------------------

commit r1459918 cause the following failure when run against Oracle. It passed with Derby.

     73   <testcase time="2.058" classname="org.apache.openjpa.persistence.jdbc.meta.TestRangeQuery"
name="testQueryRange">
     74     <failure message="expected:&lt;5&gt; but was:&lt;0&gt;" type="junit.framework.AssertionFailedError">junit.framework.AssertionFailedError:
expected:&lt;5&gt; but was:&lt;0&gt;
     75   at junit.framework.Assert.fail(Assert.java:47)
     76   at junit.framework.Assert.failNotEquals(Assert.java:282)
     77   at junit.framework.Assert.assertEquals(Assert.java:64)
     78   at junit.framework.Assert.assertEquals(Assert.java:201)
     79   at junit.framework.Assert.assertEquals(Assert.java:207)
     80   at org.apache.openjpa.persistence.jdbc.meta.TestRangeQuery.testQueryRange(TestRangeQuery.java:74)
     81   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

                
> Use new Offset/Limit/ROWNUM features in DB2 family of databases for range queries
> ---------------------------------------------------------------------------------
>
>                 Key: OPENJPA-2356
>                 URL: https://issues.apache.org/jira/browse/OPENJPA-2356
>             Project: OpenJPA
>          Issue Type: Improvement
>            Reporter: Pinaki Poddar
>            Assignee: Pinaki Poddar
>             Fix For: 2.3.0
>
>
> JPA queries that use setFirstResult() and/or setMaxResult() translate to some form of
Offset and Limit syntax in database SQL query. Recently DB2 and Derby has added ROWNUM and
FETCH offset respectively.
> OpenJPA should use these facilities when appropriate.   

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