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<div class="subTitle"><span class="packageLabelInType">Package</span>&nbsp;<a href="package-summary.html">org.apache.calcite.rel.metadata</a></div>
<h2 title="Class RelMdPredicates" class="title">Class RelMdPredicates</h2>
</div>
<div class="contentContainer">
<ul class="inheritance">
<li>java.lang.Object</li>
<li>
<ul class="inheritance">
<li>org.apache.calcite.rel.metadata.RelMdPredicates</li>
</ul>
</li>
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<dt>All Implemented Interfaces:</dt>
<dd><code><a href="MetadataHandler.html" title="interface in org.apache.calcite.rel.metadata">MetadataHandler</a>&lt;<a href="BuiltInMetadata.Predicates.html" title="interface in org.apache.calcite.rel.metadata">BuiltInMetadata.Predicates</a>&gt;</code></dd>
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<pre>public class <span class="typeNameLabel">RelMdPredicates</span>
extends java.lang.Object
implements <a href="MetadataHandler.html" title="interface in org.apache.calcite.rel.metadata">MetadataHandler</a>&lt;<a href="BuiltInMetadata.Predicates.html" title="interface in org.apache.calcite.rel.metadata">BuiltInMetadata.Predicates</a>&gt;</pre>
<div class="block">Utility to infer Predicates that are applicable above a RelNode.
<p>This is currently used by
<a href="../rules/JoinPushTransitivePredicatesRule.html" title="class in org.apache.calcite.rel.rules"><code>JoinPushTransitivePredicatesRule</code></a> to
infer <em>Predicates</em> that can be inferred from one side of a Join
to the other.
<p>The PullUp Strategy is sound but not complete. Here are some of the
limitations:
<ol>
<li> For Aggregations we only PullUp predicates that only contain
Grouping Keys. This can be extended to infer predicates on Aggregation
expressions from expressions on the aggregated columns. For e.g.
<pre>
select a, max(b) from R1 where b &gt; 7
&rarr; max(b) &gt; 7 or max(b) is null
</pre>
<li> For Projections we only look at columns that are projected without
any function applied. So:
<pre>
select a from R1 where a &gt; 7
&rarr; "a &gt; 7" is pulled up from the Projection.
select a + 1 from R1 where a + 1 &gt; 7
&rarr; "a + 1 gt; 7" is not pulled up
</pre>
<li> There are several restrictions on Joins:
<ul>
<li> We only pullUp inferred predicates for now. Pulling up existing
predicates causes an explosion of duplicates. The existing predicates
are pushed back down as new predicates. Once we have rules to eliminate
duplicate Filter conditions, we should pullUp all predicates.
<li> For Left Outer: we infer new predicates from the left and set them
as applicable on the Right side. No predicates are pulledUp.
<li> Right Outer Joins are handled in an analogous manner.
<li> For Full Outer Joins no predicates are pulledUp or inferred.
</ul>
</ol></div>
</li>
</ul>
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<td class="colFirst"><code>(package private) static class&nbsp;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="RelMdPredicates.JoinConditionBasedPredicateInference.html" title="class in org.apache.calcite.rel.metadata">RelMdPredicates.JoinConditionBasedPredicateInference</a></span></code></th>
<td class="colLast">
<div class="block">Utility to infer predicates from one side of the join that apply on the
other side.</div>
</td>
</tr>
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<td class="colFirst"><code>private static java.util.List&lt;<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#EMPTY_LIST">EMPTY_LIST</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="RelMetadataProvider.html" title="interface in org.apache.calcite.rel.metadata">RelMetadataProvider</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#SOURCE">SOURCE</a></span></code></th>
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<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E()">RelMdPredicates</a></span>()</code></th>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colSecond" scope="col">Method</th>
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<td class="colFirst"><code><a href="MetadataDef.html" title="class in org.apache.calcite.rel.metadata">MetadataDef</a>&lt;<a href="BuiltInMetadata.Predicates.html" title="interface in org.apache.calcite.rel.metadata">BuiltInMetadata.Predicates</a>&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getDef()">getDef</a></span>()</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code><a href="../../plan/RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getPredicates(org.apache.calcite.plan.hep.HepRelVertex,org.apache.calcite.rel.metadata.RelMetadataQuery)">getPredicates</a></span>&#8203;(<a href="../../plan/hep/HepRelVertex.html" title="class in org.apache.calcite.plan.hep">HepRelVertex</a>&nbsp;rel,
<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code><a href="../../plan/RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getPredicates(org.apache.calcite.plan.volcano.RelSubset,org.apache.calcite.rel.metadata.RelMetadataQuery)">getPredicates</a></span>&#8203;(<a href="../../plan/volcano/RelSubset.html" title="class in org.apache.calcite.plan.volcano">RelSubset</a>&nbsp;r,
<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code><a href="../../plan/RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getPredicates(org.apache.calcite.rel.core.Aggregate,org.apache.calcite.rel.metadata.RelMetadataQuery)">getPredicates</a></span>&#8203;(<a href="../core/Aggregate.html" title="class in org.apache.calcite.rel.core">Aggregate</a>&nbsp;agg,
<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq)</code></th>
<td class="colLast">
<div class="block">Infers predicates for an Aggregate.</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code><a href="../../plan/RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getPredicates(org.apache.calcite.rel.core.Exchange,org.apache.calcite.rel.metadata.RelMetadataQuery)">getPredicates</a></span>&#8203;(<a href="../core/Exchange.html" title="class in org.apache.calcite.rel.core">Exchange</a>&nbsp;exchange,
<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq)</code></th>
<td class="colLast">
<div class="block">Infers predicates for an Exchange.</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code><a href="../../plan/RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getPredicates(org.apache.calcite.rel.core.Filter,org.apache.calcite.rel.metadata.RelMetadataQuery)">getPredicates</a></span>&#8203;(<a href="../core/Filter.html" title="class in org.apache.calcite.rel.core">Filter</a>&nbsp;filter,
<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq)</code></th>
<td class="colLast">
<div class="block">Add the Filter condition to the pulledPredicates list from the input.</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code><a href="../../plan/RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getPredicates(org.apache.calcite.rel.core.Join,org.apache.calcite.rel.metadata.RelMetadataQuery)">getPredicates</a></span>&#8203;(<a href="../core/Join.html" title="class in org.apache.calcite.rel.core">Join</a>&nbsp;join,
<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq)</code></th>
<td class="colLast">
<div class="block">Infers predicates for a <a href="../core/Join.html" title="class in org.apache.calcite.rel.core"><code>Join</code></a> (including
<code>SemiJoin</code>).</div>
</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code><a href="../../plan/RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getPredicates(org.apache.calcite.rel.core.Project,org.apache.calcite.rel.metadata.RelMetadataQuery)">getPredicates</a></span>&#8203;(<a href="../core/Project.html" title="class in org.apache.calcite.rel.core">Project</a>&nbsp;project,
<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq)</code></th>
<td class="colLast">
<div class="block">Infers predicates for a project.</div>
</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code><a href="../../plan/RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getPredicates(org.apache.calcite.rel.core.Sort,org.apache.calcite.rel.metadata.RelMetadataQuery)">getPredicates</a></span>&#8203;(<a href="../core/Sort.html" title="class in org.apache.calcite.rel.core">Sort</a>&nbsp;sort,
<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq)</code></th>
<td class="colLast">
<div class="block">Infers predicates for a Sort.</div>
</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code><a href="../../plan/RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getPredicates(org.apache.calcite.rel.core.TableScan,org.apache.calcite.rel.metadata.RelMetadataQuery)">getPredicates</a></span>&#8203;(<a href="../core/TableScan.html" title="class in org.apache.calcite.rel.core">TableScan</a>&nbsp;table,
<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq)</code></th>
<td class="colLast">
<div class="block">Infers predicates for a table scan.</div>
</td>
</tr>
<tr id="i10" class="altColor">
<td class="colFirst"><code><a href="../../plan/RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getPredicates(org.apache.calcite.rel.core.Union,org.apache.calcite.rel.metadata.RelMetadataQuery)">getPredicates</a></span>&#8203;(<a href="../core/Union.html" title="class in org.apache.calcite.rel.core">Union</a>&nbsp;union,
<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq)</code></th>
<td class="colLast">
<div class="block">Infers predicates for a Union.</div>
</td>
</tr>
<tr id="i11" class="rowColor">
<td class="colFirst"><code><a href="../../plan/RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getPredicates(org.apache.calcite.rel.RelNode,org.apache.calcite.rel.metadata.RelMetadataQuery)">getPredicates</a></span>&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel,
<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq)</code></th>
<td class="colLast">
<div class="block">Catch-all implementation for
<a href="BuiltInMetadata.Predicates.html#getPredicates()"><code>BuiltInMetadata.Predicates.getPredicates()</code></a>,
invoked using reflection.</div>
</td>
</tr>
<tr id="i12" class="altColor">
<td class="colFirst"><code>private <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="#projectPredicate(org.apache.calcite.rex.RexBuilder,org.apache.calcite.rel.RelNode,org.apache.calcite.rex.RexNode,org.apache.calcite.util.ImmutableBitSet)">projectPredicate</a></span>&#8203;(<a href="../../rex/RexBuilder.html" title="class in org.apache.calcite.rex">RexBuilder</a>&nbsp;rexBuilder,
<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;input,
<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;r,
<a href="../../util/ImmutableBitSet.html" title="class in org.apache.calcite.util">ImmutableBitSet</a>&nbsp;columnsMapped)</code></th>
<td class="colLast">
<div class="block">Converts a predicate on a particular set of columns into a predicate on
a subset of those columns, weakening if necessary.</div>
</td>
</tr>
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<h3>Methods inherited from class&nbsp;java.lang.Object</h3>
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<pre>public static final&nbsp;<a href="RelMetadataProvider.html" title="interface in org.apache.calcite.rel.metadata">RelMetadataProvider</a> SOURCE</pre>
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<pre>private static final&nbsp;java.util.List&lt;<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt; EMPTY_LIST</pre>
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<h4>RelMdPredicates</h4>
<pre>public&nbsp;RelMdPredicates()</pre>
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<h4>getDef</h4>
<pre class="methodSignature">public&nbsp;<a href="MetadataDef.html" title="class in org.apache.calcite.rel.metadata">MetadataDef</a>&lt;<a href="BuiltInMetadata.Predicates.html" title="interface in org.apache.calcite.rel.metadata">BuiltInMetadata.Predicates</a>&gt;&nbsp;getDef()</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="MetadataHandler.html#getDef()">getDef</a></code>&nbsp;in interface&nbsp;<code><a href="MetadataHandler.html" title="interface in org.apache.calcite.rel.metadata">MetadataHandler</a>&lt;<a href="BuiltInMetadata.Predicates.html" title="interface in org.apache.calcite.rel.metadata">BuiltInMetadata.Predicates</a>&gt;</code></dd>
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<h4>getPredicates</h4>
<pre class="methodSignature">public&nbsp;<a href="../../plan/RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a>&nbsp;getPredicates&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel,
<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq)</pre>
<div class="block">Catch-all implementation for
<a href="BuiltInMetadata.Predicates.html#getPredicates()"><code>BuiltInMetadata.Predicates.getPredicates()</code></a>,
invoked using reflection.</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="RelMetadataQuery.html#getPulledUpPredicates(org.apache.calcite.rel.RelNode)"><code>RelMetadataQuery.getPulledUpPredicates(RelNode)</code></a></dd>
</dl>
</li>
</ul>
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<h4>getPredicates</h4>
<pre class="methodSignature">public&nbsp;<a href="../../plan/RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a>&nbsp;getPredicates&#8203;(<a href="../../plan/hep/HepRelVertex.html" title="class in org.apache.calcite.plan.hep">HepRelVertex</a>&nbsp;rel,
<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq)</pre>
</li>
</ul>
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<h4>getPredicates</h4>
<pre class="methodSignature">public&nbsp;<a href="../../plan/RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a>&nbsp;getPredicates&#8203;(<a href="../core/TableScan.html" title="class in org.apache.calcite.rel.core">TableScan</a>&nbsp;table,
<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq)</pre>
<div class="block">Infers predicates for a table scan.</div>
</li>
</ul>
<a id="getPredicates(org.apache.calcite.rel.core.Project,org.apache.calcite.rel.metadata.RelMetadataQuery)">
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<h4>getPredicates</h4>
<pre class="methodSignature">public&nbsp;<a href="../../plan/RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a>&nbsp;getPredicates&#8203;(<a href="../core/Project.html" title="class in org.apache.calcite.rel.core">Project</a>&nbsp;project,
<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq)</pre>
<div class="block">Infers predicates for a project.
<ol>
<li>create a mapping from input to projection. Map only positions that
directly reference an input column.
<li>Expressions that only contain above columns are retained in the
Project's pullExpressions list.
<li>For e.g. expression 'a + e = 9' below will not be pulled up because 'e'
is not in the projection list.
<blockquote><pre>
inputPullUpExprs: {a &gt; 7, b + c &lt; 10, a + e = 9}
projectionExprs: {a, b, c, e / 2}
projectionPullupExprs: {a &gt; 7, b + c &lt; 10}
</pre></blockquote>
</ol></div>
</li>
</ul>
<a id="projectPredicate(org.apache.calcite.rex.RexBuilder,org.apache.calcite.rel.RelNode,org.apache.calcite.rex.RexNode,org.apache.calcite.util.ImmutableBitSet)">
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<h4>projectPredicate</h4>
<pre class="methodSignature">private&nbsp;<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;projectPredicate&#8203;(<a href="../../rex/RexBuilder.html" title="class in org.apache.calcite.rex">RexBuilder</a>&nbsp;rexBuilder,
<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;input,
<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;r,
<a href="../../util/ImmutableBitSet.html" title="class in org.apache.calcite.util">ImmutableBitSet</a>&nbsp;columnsMapped)</pre>
<div class="block">Converts a predicate on a particular set of columns into a predicate on
a subset of those columns, weakening if necessary.
<p>If not possible to simplify, returns <code>true</code>, which is the weakest
possible predicate.
<p>Examples:<ol>
<li>The predicate <code>$7 = $9</code> on columns [7]
becomes <code>$7 is not null</code>
<li>The predicate <code>$7 = $9 + $11</code> on columns [7, 9]
becomes <code>$7 is not null or $9 is not null</code>
<li>The predicate <code>$7 = $9 and $9 = 5</code> on columns [7] becomes
<code>$7 = 5</code>
<li>The predicate
<code>$7 = $9 and ($9 = $1 or $9 = $2) and $1 &gt; 3 and $2 &gt; 10</code>
on columns [7] becomes <code>$7 &gt; 3</code>
</ol>
<p>We currently only handle examples 1 and 2.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>rexBuilder</code> - Rex builder</dd>
<dd><code>input</code> - Input relational expression</dd>
<dd><code>r</code> - Predicate expression</dd>
<dd><code>columnsMapped</code> - Columns which the final predicate can reference</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Predicate expression narrowed to reference only certain columns</dd>
</dl>
</li>
</ul>
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<h4>getPredicates</h4>
<pre class="methodSignature">public&nbsp;<a href="../../plan/RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a>&nbsp;getPredicates&#8203;(<a href="../core/Filter.html" title="class in org.apache.calcite.rel.core">Filter</a>&nbsp;filter,
<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq)</pre>
<div class="block">Add the Filter condition to the pulledPredicates list from the input.</div>
</li>
</ul>
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<h4>getPredicates</h4>
<pre class="methodSignature">public&nbsp;<a href="../../plan/RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a>&nbsp;getPredicates&#8203;(<a href="../core/Join.html" title="class in org.apache.calcite.rel.core">Join</a>&nbsp;join,
<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq)</pre>
<div class="block">Infers predicates for a <a href="../core/Join.html" title="class in org.apache.calcite.rel.core"><code>Join</code></a> (including
<code>SemiJoin</code>).</div>
</li>
</ul>
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<h4>getPredicates</h4>
<pre class="methodSignature">public&nbsp;<a href="../../plan/RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a>&nbsp;getPredicates&#8203;(<a href="../core/Aggregate.html" title="class in org.apache.calcite.rel.core">Aggregate</a>&nbsp;agg,
<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq)</pre>
<div class="block">Infers predicates for an Aggregate.
<p>Pulls up predicates that only contains references to columns in the
GroupSet. For e.g.
<blockquote><pre>
inputPullUpExprs : { a &gt; 7, b + c &lt; 10, a + e = 9}
groupSet : { a, b}
pulledUpExprs : { a &gt; 7}
</pre></blockquote></div>
</li>
</ul>
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<h4>getPredicates</h4>
<pre class="methodSignature">public&nbsp;<a href="../../plan/RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a>&nbsp;getPredicates&#8203;(<a href="../core/Union.html" title="class in org.apache.calcite.rel.core">Union</a>&nbsp;union,
<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq)</pre>
<div class="block">Infers predicates for a Union.</div>
</li>
</ul>
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<h4>getPredicates</h4>
<pre class="methodSignature">public&nbsp;<a href="../../plan/RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a>&nbsp;getPredicates&#8203;(<a href="../core/Sort.html" title="class in org.apache.calcite.rel.core">Sort</a>&nbsp;sort,
<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq)</pre>
<div class="block">Infers predicates for a Sort.</div>
</li>
</ul>
<a id="getPredicates(org.apache.calcite.rel.core.Exchange,org.apache.calcite.rel.metadata.RelMetadataQuery)">
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<h4>getPredicates</h4>
<pre class="methodSignature">public&nbsp;<a href="../../plan/RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a>&nbsp;getPredicates&#8203;(<a href="../core/Exchange.html" title="class in org.apache.calcite.rel.core">Exchange</a>&nbsp;exchange,
<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq)</pre>
<div class="block">Infers predicates for an Exchange.</div>
</li>
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<h4>getPredicates</h4>
<pre class="methodSignature">public&nbsp;<a href="../../plan/RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a>&nbsp;getPredicates&#8203;(<a href="../../plan/volcano/RelSubset.html" title="class in org.apache.calcite.plan.volcano">RelSubset</a>&nbsp;r,
<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq)</pre>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="RelMetadataQuery.html#getPulledUpPredicates(org.apache.calcite.rel.RelNode)"><code>RelMetadataQuery.getPulledUpPredicates(RelNode)</code></a></dd>
</dl>
</li>
</ul>
</li>
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