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<div class="subTitle">org.apache.calcite.plan</div>
<h2 title="类 RelOptPredicateList" class="title">类 RelOptPredicateList</h2>
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<li>org.apache.calcite.plan.RelOptPredicateList</li>
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<pre>public class <span class="typeNameLabel">RelOptPredicateList</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">Predicates that are known to hold in the output of a particular relational
expression.
<p><b>Pulled up predicates</b> (field <a href="../../../../org/apache/calcite/plan/RelOptPredicateList.html#pulledUpPredicates"><code>pulledUpPredicates</code></a> are
predicates that apply to every row output by the relational expression. They
are inferred from the input relational expression(s) and the relational
operator.
<p>For example, if you apply <code>Filter(x &gt; 1)</code> to a relational
expression that has a predicate <code>y &lt; 10</code> then the pulled up predicates
for the Filter are <code>[y &lt; 10, x &gt; 1]</code>.
<p><b>Inferred predicates</b> only apply to joins. If there there is a
predicate on the left input to a join, and that predicate is over columns
used in the join condition, then a predicate can be inferred on the right
input to the join. (And vice versa.)
<p>For example, in the query
<blockquote>SELECT *<br>
FROM emp<br>
JOIN dept ON emp.deptno = dept.deptno
WHERE emp.gender = 'F' AND emp.deptno &lt; 10</blockquote>
we have
<ul>
<li>left: <code>Filter(Scan(EMP), deptno &lt; 10</code>,
predicates: <code>[deptno &lt; 10]</code>
<li>right: <code>Scan(DEPT)</code>, predicates: <code>[]</code>
<li>join: <code>Join(left, right, emp.deptno = dept.deptno</code>,
leftInferredPredicates: [],
rightInferredPredicates: [deptno &lt; 10],
pulledUpPredicates: [emp.gender = 'F', emp.deptno &lt; 10,
emp.deptno = dept.deptno, dept.deptno &lt; 10]
</ul>
<p>Note that the predicate from the left input appears in
<code>rightInferredPredicates</code>. Predicates from several sources appear in
<code>pulledUpPredicates</code>.</div>
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<h3>字段概要</h3>
<table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="字段概要表, 列表字段和解释">
<caption><span>字段</span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">限定符和类型</th>
<th class="colLast" scope="col">字段和说明</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code>com.google.common.collect.ImmutableMap&lt;<a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a>,<a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/RelOptPredicateList.html#constantMap">constantMap</a></span></code>
<div class="block">A map of each (e, constant) pair that occurs within
<a href="../../../../org/apache/calcite/plan/RelOptPredicateList.html#pulledUpPredicates"><code>pulledUpPredicates</code></a>.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="../../../../org/apache/calcite/plan/RelOptPredicateList.html" title="org.apache.calcite.plan中的类">RelOptPredicateList</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/RelOptPredicateList.html#EMPTY">EMPTY</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>com.google.common.collect.ImmutableList&lt;<a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/RelOptPredicateList.html#leftInferredPredicates">leftInferredPredicates</a></span></code>
<div class="block">Predicates that were inferred from the right input.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>com.google.common.collect.ImmutableList&lt;<a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/RelOptPredicateList.html#pulledUpPredicates">pulledUpPredicates</a></span></code>
<div class="block">Predicates that can be pulled up from the relational expression and its
inputs.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>com.google.common.collect.ImmutableList&lt;<a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/RelOptPredicateList.html#rightInferredPredicates">rightInferredPredicates</a></span></code>
<div class="block">Predicates that were inferred from the left input.</div>
</td>
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<h3>方法概要</h3>
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<caption><span id="t0" class="activeTableTab"><span>所有方法</span><span class="tabEnd">&nbsp;</span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">静态方法</a></span><span class="tabEnd">&nbsp;</span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">实例方法</a></span><span class="tabEnd">&nbsp;</span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">具体方法</a></span><span class="tabEnd">&nbsp;</span></span></caption>
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<th class="colFirst" scope="col">限定符和类型</th>
<th class="colLast" scope="col">方法和说明</th>
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<td class="colFirst"><code>static <a href="../../../../org/apache/calcite/plan/RelOptPredicateList.html" title="org.apache.calcite.plan中的类">RelOptPredicateList</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/RelOptPredicateList.html#of-org.apache.calcite.rex.RexBuilder-java.lang.Iterable-">of</a></span>(<a href="../../../../org/apache/calcite/rex/RexBuilder.html" title="org.apache.calcite.rex中的类">RexBuilder</a>&nbsp;rexBuilder,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true" title="java.lang中的类或接口">Iterable</a>&lt;<a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a>&gt;&nbsp;pulledUpPredicates)</code>
<div class="block">Creates a RelOptPredicateList with only pulled-up predicates, no inferred
predicates.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>static <a href="../../../../org/apache/calcite/plan/RelOptPredicateList.html" title="org.apache.calcite.plan中的类">RelOptPredicateList</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/RelOptPredicateList.html#of-org.apache.calcite.rex.RexBuilder-java.lang.Iterable-java.lang.Iterable-java.lang.Iterable-">of</a></span>(<a href="../../../../org/apache/calcite/rex/RexBuilder.html" title="org.apache.calcite.rex中的类">RexBuilder</a>&nbsp;rexBuilder,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true" title="java.lang中的类或接口">Iterable</a>&lt;<a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a>&gt;&nbsp;pulledUpPredicates,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true" title="java.lang中的类或接口">Iterable</a>&lt;<a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a>&gt;&nbsp;leftInferredPredicates,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true" title="java.lang中的类或接口">Iterable</a>&lt;<a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a>&gt;&nbsp;rightInferredPredicates)</code>
<div class="block">Creates a RelOptPredicateList for a join.</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code><a href="../../../../org/apache/calcite/plan/RelOptPredicateList.html" title="org.apache.calcite.plan中的类">RelOptPredicateList</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/RelOptPredicateList.html#shift-org.apache.calcite.rex.RexBuilder-int-">shift</a></span>(<a href="../../../../org/apache/calcite/rex/RexBuilder.html" title="org.apache.calcite.rex中的类">RexBuilder</a>&nbsp;rexBuilder,
int&nbsp;offset)</code>&nbsp;</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code><a href="../../../../org/apache/calcite/plan/RelOptPredicateList.html" title="org.apache.calcite.plan中的类">RelOptPredicateList</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/plan/RelOptPredicateList.html#union-org.apache.calcite.rex.RexBuilder-org.apache.calcite.plan.RelOptPredicateList-">union</a></span>(<a href="../../../../org/apache/calcite/rex/RexBuilder.html" title="org.apache.calcite.rex中的类">RexBuilder</a>&nbsp;rexBuilder,
<a href="../../../../org/apache/calcite/plan/RelOptPredicateList.html" title="org.apache.calcite.plan中的类">RelOptPredicateList</a>&nbsp;list)</code>&nbsp;</td>
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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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<pre>public static final&nbsp;<a href="../../../../org/apache/calcite/plan/RelOptPredicateList.html" title="org.apache.calcite.plan中的类">RelOptPredicateList</a> EMPTY</pre>
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<pre>public final&nbsp;com.google.common.collect.ImmutableList&lt;<a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a>&gt; pulledUpPredicates</pre>
<div class="block">Predicates that can be pulled up from the relational expression and its
inputs.</div>
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<a name="leftInferredPredicates">
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<h4>leftInferredPredicates</h4>
<pre>public final&nbsp;com.google.common.collect.ImmutableList&lt;<a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a>&gt; leftInferredPredicates</pre>
<div class="block">Predicates that were inferred from the right input.
Empty if the relational expression is not a join.</div>
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<h4>rightInferredPredicates</h4>
<pre>public final&nbsp;com.google.common.collect.ImmutableList&lt;<a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a>&gt; rightInferredPredicates</pre>
<div class="block">Predicates that were inferred from the left input.
Empty if the relational expression is not a join.</div>
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<h4>constantMap</h4>
<pre>public final&nbsp;com.google.common.collect.ImmutableMap&lt;<a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a>,<a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a>&gt; constantMap</pre>
<div class="block">A map of each (e, constant) pair that occurs within
<a href="../../../../org/apache/calcite/plan/RelOptPredicateList.html#pulledUpPredicates"><code>pulledUpPredicates</code></a>.</div>
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<h3>方法详细资料</h3>
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<h4>of</h4>
<pre>public static&nbsp;<a href="../../../../org/apache/calcite/plan/RelOptPredicateList.html" title="org.apache.calcite.plan中的类">RelOptPredicateList</a>&nbsp;of(<a href="../../../../org/apache/calcite/rex/RexBuilder.html" title="org.apache.calcite.rex中的类">RexBuilder</a>&nbsp;rexBuilder,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true" title="java.lang中的类或接口">Iterable</a>&lt;<a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a>&gt;&nbsp;pulledUpPredicates)</pre>
<div class="block">Creates a RelOptPredicateList with only pulled-up predicates, no inferred
predicates.
<p>Use this for relational expressions other than joins.</div>
<dl>
<dt><span class="paramLabel">参数:</span></dt>
<dd><code>pulledUpPredicates</code> - Predicates that apply to the rows returned by the
relational expression</dd>
</dl>
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<h4>of</h4>
<pre>public static&nbsp;<a href="../../../../org/apache/calcite/plan/RelOptPredicateList.html" title="org.apache.calcite.plan中的类">RelOptPredicateList</a>&nbsp;of(<a href="../../../../org/apache/calcite/rex/RexBuilder.html" title="org.apache.calcite.rex中的类">RexBuilder</a>&nbsp;rexBuilder,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true" title="java.lang中的类或接口">Iterable</a>&lt;<a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a>&gt;&nbsp;pulledUpPredicates,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true" title="java.lang中的类或接口">Iterable</a>&lt;<a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a>&gt;&nbsp;leftInferredPredicates,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true" title="java.lang中的类或接口">Iterable</a>&lt;<a href="../../../../org/apache/calcite/rex/RexNode.html" title="org.apache.calcite.rex中的类">RexNode</a>&gt;&nbsp;rightInferredPredicates)</pre>
<div class="block">Creates a RelOptPredicateList for a join.</div>
<dl>
<dt><span class="paramLabel">参数:</span></dt>
<dd><code>rexBuilder</code> - Rex builder</dd>
<dd><code>pulledUpPredicates</code> - Predicates that apply to the rows returned by the
relational expression</dd>
<dd><code>leftInferredPredicates</code> - Predicates that were inferred from the right
input</dd>
<dd><code>rightInferredPredicates</code> - Predicates that were inferred from the left
input</dd>
</dl>
</li>
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<h4>union</h4>
<pre>public&nbsp;<a href="../../../../org/apache/calcite/plan/RelOptPredicateList.html" title="org.apache.calcite.plan中的类">RelOptPredicateList</a>&nbsp;union(<a href="../../../../org/apache/calcite/rex/RexBuilder.html" title="org.apache.calcite.rex中的类">RexBuilder</a>&nbsp;rexBuilder,
<a href="../../../../org/apache/calcite/plan/RelOptPredicateList.html" title="org.apache.calcite.plan中的类">RelOptPredicateList</a>&nbsp;list)</pre>
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<h4>shift</h4>
<pre>public&nbsp;<a href="../../../../org/apache/calcite/plan/RelOptPredicateList.html" title="org.apache.calcite.plan中的类">RelOptPredicateList</a>&nbsp;shift(<a href="../../../../org/apache/calcite/rex/RexBuilder.html" title="org.apache.calcite.rex中的类">RexBuilder</a>&nbsp;rexBuilder,
int&nbsp;offset)</pre>
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