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| <h2 title="Interface AuxiliaryConverter" class="title">Interface AuxiliaryConverter</h2> |
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| <pre>public interface <span class="typeNameLabel">AuxiliaryConverter</span></pre> |
| <div class="block">Converts an expression for a group window function (e.g. TUMBLE) |
| into an expression for an auxiliary group function (e.g. TUMBLE_START).</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../sql/fun/SqlStdOperatorTable.html#TUMBLE"><code>SqlStdOperatorTable.TUMBLE</code></a></dd> |
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| <td class="colFirst"><code>static class </code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="AuxiliaryConverter.Impl.html" title="class in org.apache.calcite.sql2rel">AuxiliaryConverter.Impl</a></span></code></th> |
| <td class="colLast"> |
| <div class="block">Simple implementation of <a href="AuxiliaryConverter.html" title="interface in org.apache.calcite.sql2rel"><code>AuxiliaryConverter</code></a>.</div> |
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| <td class="colFirst"><code><a href="../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#convert(org.apache.calcite.rex.RexBuilder,org.apache.calcite.rex.RexNode,org.apache.calcite.rex.RexNode)">convert</a></span>​(<a href="../rex/RexBuilder.html" title="class in org.apache.calcite.rex">RexBuilder</a> rexBuilder, |
| <a href="../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a> groupCall, |
| <a href="../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a> e)</code></th> |
| <td class="colLast"> |
| <div class="block">Converts an expression.</div> |
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| <a id="convert(org.apache.calcite.rex.RexBuilder,org.apache.calcite.rex.RexNode,org.apache.calcite.rex.RexNode)"> |
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| <h4>convert</h4> |
| <pre class="methodSignature"><a href="../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a> convert​(<a href="../rex/RexBuilder.html" title="class in org.apache.calcite.rex">RexBuilder</a> rexBuilder, |
| <a href="../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a> groupCall, |
| <a href="../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a> e)</pre> |
| <div class="block">Converts an expression.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>rexBuilder</code> - Rex builder</dd> |
| <dd><code>groupCall</code> - Call to the group function, e.g. "TUMBLE($2, 36000)"</dd> |
| <dd><code>e</code> - Expression holding result of the group function, e.g. "$0"</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Expression for auxiliary function, e.g. "$0 + 36000" converts |
| the result of TUMBLE to the result of TUMBLE_END</dd> |
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