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<div class="subTitle">org.apache.calcite.plan</div>
<h2 title="类 RelOptQuery" class="title">类 RelOptQuery</h2>
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<pre>public class <span class="typeNameLabel">RelOptQuery</span>
extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="java.lang中的类或接口">Object</a></pre>
<div class="block">A <code>RelOptQuery</code> represents a set of
<a href="../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口"><code>relational expressions</code></a> which derive from the same
<code>select</code> statement.</div>
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<h3>字段概要</h3>
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<caption><span>字段</span><span class="tabEnd">&nbsp;</span></caption>
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<th class="colFirst" scope="col">限定符和类型</th>
<th class="colLast" scope="col">字段和说明</th>
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<td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="java.lang中的类或接口">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/RelOptQuery.html#CORREL_PREFIX">CORREL_PREFIX</a></span></code>
<div class="block">Prefix to the name of correlating variables.</div>
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<h3>构造器概要</h3>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/RelOptQuery.html#RelOptQuery-org.apache.calcite.plan.RelOptPlanner-">RelOptQuery</a></span>(<a href="../../../../org/apache/calcite/plan/RelOptPlanner.html" title="org.apache.calcite.plan中的接口">RelOptPlanner</a>&nbsp;planner)</code>
<div class="block"><span class="deprecatedLabel">已过时。</span>&nbsp;</div>
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<td class="colFirst"><code><a href="../../../../org/apache/calcite/plan/RelOptCluster.html" title="org.apache.calcite.plan中的类">RelOptCluster</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/RelOptQuery.html#createCluster-org.apache.calcite.rel.type.RelDataTypeFactory-org.apache.calcite.rex.RexBuilder-">createCluster</a></span>(<a href="../../../../org/apache/calcite/rel/type/RelDataTypeFactory.html" title="org.apache.calcite.rel.type中的接口">RelDataTypeFactory</a>&nbsp;typeFactory,
<a href="../../../../org/apache/calcite/rex/RexBuilder.html" title="org.apache.calcite.rex中的类">RexBuilder</a>&nbsp;rexBuilder)</code>
<div class="block"><span class="deprecatedLabel">已过时。</span>&nbsp;</div>
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<td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="java.lang中的类或接口">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/RelOptQuery.html#createCorrel--">createCorrel</a></span>()</code>
<div class="block"><span class="deprecatedLabel">已过时。</span>&nbsp;
<div class="block"><span class="deprecationComment">Use <a href="../../../../org/apache/calcite/plan/RelOptCluster.html#createCorrel--"><code>RelOptCluster.createCorrel()</code></a></span></div>
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<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/RelOptQuery.html#getCorrelOrdinal-java.lang.String-">getCorrelOrdinal</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="java.lang中的类或接口">String</a>&nbsp;correlName)</code>
<div class="block"><span class="deprecatedLabel">已过时。</span>&nbsp;</div>
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<tr id="i3" class="rowColor">
<td class="colFirst"><code><a href="../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/RelOptQuery.html#lookupCorrel-java.lang.String-">lookupCorrel</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="java.lang中的类或接口">String</a>&nbsp;name)</code>
<div class="block">Returns the relational expression which populates a correlating variable.</div>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/RelOptQuery.html#mapCorrel-java.lang.String-org.apache.calcite.rel.RelNode-">mapCorrel</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="java.lang中的类或接口">String</a>&nbsp;name,
<a href="../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a>&nbsp;rel)</code>
<div class="block">Maps a correlating variable to a <a href="../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口"><code>RelNode</code></a>.</div>
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<code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone--" title="java.lang中的类或接口">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="java.lang中的类或接口">equals</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize--" title="java.lang中的类或接口">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--" title="java.lang中的类或接口">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="java.lang中的类或接口">hashCode</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify--" title="java.lang中的类或接口">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="java.lang中的类或接口">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#toString--" title="java.lang中的类或接口">toString</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait--" title="java.lang中的类或接口">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="java.lang中的类或接口">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="java.lang中的类或接口">wait</a></code></li>
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<h4>CORREL_PREFIX</h4>
<pre>public static final&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="java.lang中的类或接口">String</a> CORREL_PREFIX</pre>
<div class="block">Prefix to the name of correlating variables.</div>
<dl>
<dt><span class="seeLabel">另请参阅:</span></dt>
<dd><a href="../../../../constant-values.html#org.apache.calcite.plan.RelOptQuery.CORREL_PREFIX">常量字段值</a></dd>
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<h3>构造器详细资料</h3>
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<h4>RelOptQuery</h4>
<pre><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Deprecated.html?is-external=true" title="java.lang中的类或接口">@Deprecated</a>
public&nbsp;RelOptQuery(<a href="../../../../org/apache/calcite/plan/RelOptPlanner.html" title="org.apache.calcite.plan中的接口">RelOptPlanner</a>&nbsp;planner)</pre>
<div class="block"><span class="deprecatedLabel">已过时。</span>&nbsp;</div>
<div class="block">Creates a query.</div>
<dl>
<dt><span class="paramLabel">参数:</span></dt>
<dd><code>planner</code> - Planner</dd>
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<h4>getCorrelOrdinal</h4>
<pre><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Deprecated.html?is-external=true" title="java.lang中的类或接口">@Deprecated</a>
public static&nbsp;int&nbsp;getCorrelOrdinal(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="java.lang中的类或接口">String</a>&nbsp;correlName)</pre>
<div class="block"><span class="deprecatedLabel">已过时。</span>&nbsp;</div>
<div class="block">Converts a correlating variable name into an ordinal, unique within the
query.</div>
<dl>
<dt><span class="paramLabel">参数:</span></dt>
<dd><code>correlName</code> - Name of correlating variable</dd>
<dt><span class="returnLabel">返回:</span></dt>
<dd>Correlating variable ordinal</dd>
</dl>
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<h4>createCluster</h4>
<pre><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Deprecated.html?is-external=true" title="java.lang中的类或接口">@Deprecated</a>
public&nbsp;<a href="../../../../org/apache/calcite/plan/RelOptCluster.html" title="org.apache.calcite.plan中的类">RelOptCluster</a>&nbsp;createCluster(<a href="../../../../org/apache/calcite/rel/type/RelDataTypeFactory.html" title="org.apache.calcite.rel.type中的接口">RelDataTypeFactory</a>&nbsp;typeFactory,
<a href="../../../../org/apache/calcite/rex/RexBuilder.html" title="org.apache.calcite.rex中的类">RexBuilder</a>&nbsp;rexBuilder)</pre>
<div class="block"><span class="deprecatedLabel">已过时。</span>&nbsp;</div>
<div class="block">Creates a cluster.</div>
<dl>
<dt><span class="paramLabel">参数:</span></dt>
<dd><code>typeFactory</code> - Type factory</dd>
<dd><code>rexBuilder</code> - Expression builder</dd>
<dt><span class="returnLabel">返回:</span></dt>
<dd>New cluster</dd>
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<h4>createCorrel</h4>
<pre><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Deprecated.html?is-external=true" title="java.lang中的类或接口">@Deprecated</a>
public&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="java.lang中的类或接口">String</a>&nbsp;createCorrel()</pre>
<div class="block"><span class="deprecatedLabel">已过时。</span>&nbsp;<span class="deprecationComment">Use <a href="../../../../org/apache/calcite/plan/RelOptCluster.html#createCorrel--"><code>RelOptCluster.createCorrel()</code></a></span></div>
<div class="block">Constructs a new name for a correlating variable. It is unique within the
whole query.</div>
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<h4>lookupCorrel</h4>
<pre>public&nbsp;<a href="../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a>&nbsp;lookupCorrel(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="java.lang中的类或接口">String</a>&nbsp;name)</pre>
<div class="block">Returns the relational expression which populates a correlating variable.</div>
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<h4>mapCorrel</h4>
<pre>public&nbsp;void&nbsp;mapCorrel(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="java.lang中的类或接口">String</a>&nbsp;name,
<a href="../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a>&nbsp;rel)</pre>
<div class="block">Maps a correlating variable to a <a href="../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口"><code>RelNode</code></a>.</div>
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