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<dd><a href="../../../../../org/apache/openjpa/persistence/query/AbsExpression.html" title="class in org.apache.openjpa.persistence.query">AbsExpression</a>, <a href="../../../../../org/apache/openjpa/persistence/query/AverageExpression.html" title="class in org.apache.openjpa.persistence.query">AverageExpression</a>, <a href="../../../../../org/apache/openjpa/persistence/query/ConcatExpression.html" title="class in org.apache.openjpa.persistence.query">ConcatExpression</a>, <a href="../../../../../org/apache/openjpa/persistence/query/CountExpression.html" title="class in org.apache.openjpa.persistence.query">CountExpression</a>, <a href="../../../../../org/apache/openjpa/persistence/query/DistinctExpression.html" title="class in org.apache.openjpa.persistence.query">DistinctExpression</a>, <a href="../../../../../org/apache/openjpa/persistence/query/IndexExpression.html" title="class in org.apache.openjpa.persistence.query">IndexExpression</a>, <a href="../../../../../org/apache/openjpa/persistence/query/LengthExpression.html" title="class in org.apache.openjpa.persistence.query">LengthExpression</a>, <a href="../../../../../org/apache/openjpa/persistence/query/LowerExpression.html" title="class in org.apache.openjpa.persistence.query">LowerExpression</a>, <a href="../../../../../org/apache/openjpa/persistence/query/MaxExpression.html" title="class in org.apache.openjpa.persistence.query">MaxExpression</a>, <a href="../../../../../org/apache/openjpa/persistence/query/MinExpression.html" title="class in org.apache.openjpa.persistence.query">MinExpression</a>, <a href="../../../../../org/apache/openjpa/persistence/query/SizeExpression.html" title="class in org.apache.openjpa.persistence.query">SizeExpression</a>, <a href="../../../../../org/apache/openjpa/persistence/query/SquareRootExpression.html" title="class in org.apache.openjpa.persistence.query">SquareRootExpression</a>, <a href="../../../../../org/apache/openjpa/persistence/query/SubStringExpression.html" title="class in org.apache.openjpa.persistence.query">SubStringExpression</a>, <a href="../../../../../org/apache/openjpa/persistence/query/SumExpression.html" title="class in org.apache.openjpa.persistence.query">SumExpression</a>, <a href="../../../../../org/apache/openjpa/persistence/query/TrimExpression.html" title="class in org.apache.openjpa.persistence.query">TrimExpression</a>, <a href="../../../../../org/apache/openjpa/persistence/query/TypeExpression.html" title="class in org.apache.openjpa.persistence.query">TypeExpression</a>, <a href="../../../../../org/apache/openjpa/persistence/query/UnaryMinusExpression.html" title="class in org.apache.openjpa.persistence.query">UnaryMinusExpression</a>, <a href="../../../../../org/apache/openjpa/persistence/query/UpperExpression.html" title="class in org.apache.openjpa.persistence.query">UpperExpression</a></dd>
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<pre>public interface <span class="typeNameLabel">Aggregate</span>
extends <a href="../../../../../org/apache/openjpa/persistence/query/Expression.html" title="interface in org.apache.openjpa.persistence.query">Expression</a></pre>
<div class="block">Type of the result of an aggregate operation</div>
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<td class="colFirst"><code><a href="../../../../../org/apache/openjpa/persistence/query/Expression.html" title="interface in org.apache.openjpa.persistence.query">Expression</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/openjpa/persistence/query/Aggregate.html#distinct--">distinct</a></span>()</code>
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<h3>Methods inherited from interface&nbsp;org.apache.openjpa.persistence.query.<a href="../../../../../org/apache/openjpa/persistence/query/Expression.html" title="interface in org.apache.openjpa.persistence.query">Expression</a></h3>
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<pre><a href="../../../../../org/apache/openjpa/persistence/query/Expression.html" title="interface in org.apache.openjpa.persistence.query">Expression</a>&nbsp;distinct()</pre>
<div class="block">Specify that duplicates are to be removed before the aggregate operation
is invoked.</div>
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