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| <b>Release 2.5</b><br /></font></td> |
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| <div class="refsect1"> |
| <h2 class="refsect1"><font face="arial, helvetica, sans-serif" color="#330099">EXCEPT</font></h2> |
| <p>When performing multiple queries, use <code>EXCEPT</code> to remove the results of a second query from the results of a first query.</p> |
| <a id="sthref468" name="sthref468"></a> |
| <p><strong><br /><span class="refsubsect">Usage</span></strong></p> |
| <p>The <code>EXCEPT</code> function is database independent, but requires database support.</p> |
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| <p><strong><br /><span class="refsubsect">Examples</span></strong></p> |
| <p><a href="#BABJIEDC">Example 3-4</a> shows how to use this JPQL extension.</p> |
| <div class="example"><a id="BABJIEDC" name="BABJIEDC"></a><a id="TLJPA612" name="TLJPA612"></a> |
| <p><strong><em><font face="arial, helvetica, sans-serif">Example 3-4 Using EXCEPT EQL</font></em></strong></p> |
| <pre xml:space="preserve" class="oac_no_warn"> |
| SELECT e FROM Employee e |
| EXCEPT SELECT e FROM Employee e WHERE e.salary > e.manager.salary |
| </pre></div> |
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| <p><strong><br /><span class="refsubsect">See Also</span></strong></p> |
| <p>For more information, see:</p> |
| <ul> |
| <li> |
| <p><a href="j_union.htm#union">"UNION"</a></p> |
| </li> |
| <li> |
| <p><a href="j_intersect.htm#intersect">"INTERSECT"</a></p> |
| </li> |
| <li> |
| <p>"JPQL"<br /> |
| <code><a href="http://wiki.eclipse.org/EclipseLink/UserGuide/JPA/Basic_JPA_Development/Querying/JPQL">http://wiki.eclipse.org/EclipseLink/UserGuide/JPA/Basic_JPA_Development/Querying/JPQL</a></code></p> |
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