Google Git
Sign in
apache / calcite-site / f3651d86b6f63f8b6bbb735c74220c093b7bf506 / . / apidocs / org / apache / calcite / rel / metadata / RelMetadataQuery.html
blob: 850a79934ad3453179babe9c9b2d3950ad39a6f7 [file] [log] [blame]
<!DOCTYPE HTML>
<!-- NewPage -->
<html lang="en">
<head>
<!-- Generated by javadoc -->
<title>RelMetadataQuery (Apache Calcite API)</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<link rel="stylesheet" type="text/css" href="../../../../../stylesheet.css" title="Style">
<link rel="stylesheet" type="text/css" href="../../../../../jquery/jquery-ui.css" title="Style">
<script type="text/javascript" src="../../../../../script.js"></script>
<script type="text/javascript" src="../../../../../jquery/jszip/dist/jszip.min.js"></script>
<script type="text/javascript" src="../../../../../jquery/jszip-utils/dist/jszip-utils.min.js"></script>
<!--[if IE]>
<script type="text/javascript" src="../../../../../jquery/jszip-utils/dist/jszip-utils-ie.min.js"></script>
<![endif]-->
<script type="text/javascript" src="../../../../../jquery/jquery-3.3.1.js"></script>
<script type="text/javascript" src="../../../../../jquery/jquery-migrate-3.0.1.js"></script>
<script type="text/javascript" src="../../../../../jquery/jquery-ui.js"></script>
</head>
<body>
<script type="text/javascript"><!--
try {
if (location.href.indexOf('is-external=true') == -1) {
parent.document.title="RelMetadataQuery (Apache Calcite API)";
}
}
catch(err) {
}
//-->
var data = {"i0":10,"i1":10,"i2":10,"i3":10,"i4":10,"i5":10,"i6":10,"i7":10,"i8":10,"i9":10,"i10":10,"i11":10,"i12":10,"i13":10,"i14":10,"i15":10,"i16":10,"i17":10,"i18":10,"i19":10,"i20":10,"i21":10,"i22":10,"i23":10,"i24":10,"i25":10,"i26":10,"i27":10,"i28":10,"i29":10,"i30":9,"i31":9,"i32":9,"i33":9,"i34":10,"i35":10,"i36":10,"i37":10,"i38":10,"i39":9,"i40":9};
var tabs = {65535:["t0","All Methods"],1:["t1","Static Methods"],2:["t2","Instance Methods"],8:["t4","Concrete Methods"]};
var altColor = "altColor";
var rowColor = "rowColor";
var tableTab = "tableTab";
var activeTableTab = "activeTableTab";
var pathtoroot = "../../../../../";
var useModuleDirectories = true;
loadScripts(document, 'script');</script>
<noscript>
<div>JavaScript is disabled on your browser.</div>
</noscript>
<header role="banner">
<nav role="navigation">
<div class="fixedNav">
<!-- ========= START OF TOP NAVBAR ======= -->
<div class="topNav"><a id="navbar.top">
<!-- -->
</a>
<div class="skipNav"><a href="#skip.navbar.top" title="Skip navigation links">Skip navigation links</a></div>
<a id="navbar.top.firstrow">
<!-- -->
</a>
<ul class="navList" title="Navigation">
<li><a href="../../../../../index.html">Overview</a></li>
<li><a href="package-summary.html">Package</a></li>
<li class="navBarCell1Rev">Class</li>
<li><a href="class-use/RelMetadataQuery.html">Use</a></li>
<li><a href="package-tree.html">Tree</a></li>
<li><a href="../../../../../deprecated-list.html">Deprecated</a></li>
<li><a href="../../../../../index-all.html">Index</a></li>
<li><a href="../../../../../help-doc.html">Help</a></li>
</ul>
</div>
<div class="subNav">
<ul class="navList" id="allclasses_navbar_top">
<li><a href="../../../../../allclasses.html">All&nbsp;Classes</a></li>
</ul>
<ul class="navListSearch">
<li><label for="search">SEARCH:</label>
<input type="text" id="search" value="search" disabled="disabled">
<input type="reset" id="reset" value="reset" disabled="disabled">
</li>
</ul>
<div>
<script type="text/javascript"><!--
allClassesLink = document.getElementById("allclasses_navbar_top");
if(window==top) {
allClassesLink.style.display = "block";
}
else {
allClassesLink.style.display = "none";
}
//-->
</script>
<noscript>
<div>JavaScript is disabled on your browser.</div>
</noscript>
</div>
<div>
<ul class="subNavList">
<li>Summary:&nbsp;</li>
<li>Nested&nbsp;|&nbsp;</li>
<li><a href="#field.summary">Field</a>&nbsp;|&nbsp;</li>
<li><a href="#constructor.summary">Constr</a>&nbsp;|&nbsp;</li>
<li><a href="#method.summary">Method</a></li>
</ul>
<ul class="subNavList">
<li>Detail:&nbsp;</li>
<li><a href="#field.detail">Field</a>&nbsp;|&nbsp;</li>
<li><a href="#constructor.detail">Constr</a>&nbsp;|&nbsp;</li>
<li><a href="#method.detail">Method</a></li>
</ul>
</div>
<a id="skip.navbar.top">
<!-- -->
</a></div>
<!-- ========= END OF TOP NAVBAR ========= -->
</div>
<div class="navPadding">&nbsp;</div>
<script type="text/javascript"><!--
$('.navPadding').css('padding-top', $('.fixedNav').css("height"));
//-->
</script>
</nav>
</header>
<!-- ======== START OF CLASS DATA ======== -->
<main role="main">
<div class="header">
<div class="subTitle"><span class="packageLabelInType">Package</span>&nbsp;<a href="package-summary.html">org.apache.calcite.rel.metadata</a></div>
<h2 title="Class RelMetadataQuery" class="title">Class RelMetadataQuery</h2>
</div>
<div class="contentContainer">
<ul class="inheritance">
<li>java.lang.Object</li>
<li>
<ul class="inheritance">
<li>org.apache.calcite.rel.metadata.RelMetadataQuery</li>
</ul>
</li>
</ul>
<div class="description">
<ul class="blockList">
<li class="blockList">
<hr>
<pre>public class <span class="typeNameLabel">RelMetadataQuery</span>
extends java.lang.Object</pre>
<div class="block">RelMetadataQuery provides a strongly-typed facade on top of
<a href="RelMetadataProvider.html" title="interface in org.apache.calcite.rel.metadata"><code>RelMetadataProvider</code></a> for the set of relational expression metadata
queries defined as standard within Calcite. The Javadoc on these methods
serves as their primary specification.
<p>To add a new standard query <code>Xyz</code> to this interface, follow
these steps:
<ol>
<li>Add a static method <code>getXyz</code> specification to this class.
<li>Add unit tests to <code>org.apache.calcite.test.RelMetadataTest</code>.
<li>Write a new provider class <code>RelMdXyz</code> in this package. Follow
the pattern from an existing class such as <a href="RelMdColumnOrigins.html" title="class in org.apache.calcite.rel.metadata"><code>RelMdColumnOrigins</code></a>,
overloading on all of the logical relational expressions to which the query
applies.
<li>Add a <code>SOURCE</code> static member, similar to
<a href="RelMdColumnOrigins.html#SOURCE"><code>RelMdColumnOrigins.SOURCE</code></a>.
<li>Register the <code>SOURCE</code> object in <a href="DefaultRelMetadataProvider.html" title="class in org.apache.calcite.rel.metadata"><code>DefaultRelMetadataProvider</code></a>.
<li>Get unit tests working.
</ol>
<p>Because relational expression metadata is extensible, extension projects
can define similar facades in order to specify access to custom metadata.
Please do not add queries here (nor on <a href="../RelNode.html" title="interface in org.apache.calcite.rel"><code>RelNode</code></a>) which lack meaning
outside of your extension.
<p>Besides adding new metadata queries, extension projects may need to add
custom providers for the standard queries in order to handle additional
relational expressions (either logical or physical). In either case, the
process is the same: write a reflective provider and chain it on to an
instance of <a href="DefaultRelMetadataProvider.html" title="class in org.apache.calcite.rel.metadata"><code>DefaultRelMetadataProvider</code></a>, pre-pending it to the default
providers. Then supply that instance to the planner via the appropriate
plugin mechanism.</div>
</li>
</ul>
</div>
<div class="summary">
<ul class="blockList">
<li class="blockList">
<!-- =========== FIELD SUMMARY =========== -->
<section role="region">
<ul class="blockList">
<li class="blockList"><a id="field.summary">
<!-- -->
</a>
<h3>Field Summary</h3>
<table class="memberSummary">
<caption><span>Fields</span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colSecond" scope="col">Field</th>
<th class="colLast" scope="col">Description</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private <a href="BuiltInMetadata.AllPredicates.Handler.html" title="interface in org.apache.calcite.rel.metadata">BuiltInMetadata.AllPredicates.Handler</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#allPredicatesHandler">allPredicatesHandler</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>private <a href="BuiltInMetadata.Collation.Handler.html" title="interface in org.apache.calcite.rel.metadata">BuiltInMetadata.Collation.Handler</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#collationHandler">collationHandler</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private <a href="BuiltInMetadata.ColumnOrigin.Handler.html" title="interface in org.apache.calcite.rel.metadata">BuiltInMetadata.ColumnOrigin.Handler</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#columnOriginHandler">columnOriginHandler</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>private <a href="BuiltInMetadata.ColumnUniqueness.Handler.html" title="interface in org.apache.calcite.rel.metadata">BuiltInMetadata.ColumnUniqueness.Handler</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#columnUniquenessHandler">columnUniquenessHandler</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private <a href="BuiltInMetadata.CumulativeCost.Handler.html" title="interface in org.apache.calcite.rel.metadata">BuiltInMetadata.CumulativeCost.Handler</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#cumulativeCostHandler">cumulativeCostHandler</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>private <a href="BuiltInMetadata.DistinctRowCount.Handler.html" title="interface in org.apache.calcite.rel.metadata">BuiltInMetadata.DistinctRowCount.Handler</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#distinctRowCountHandler">distinctRowCountHandler</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private <a href="BuiltInMetadata.Distribution.Handler.html" title="interface in org.apache.calcite.rel.metadata">BuiltInMetadata.Distribution.Handler</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#distributionHandler">distributionHandler</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>protected static <a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#EMPTY">EMPTY</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private <a href="BuiltInMetadata.ExplainVisibility.Handler.html" title="interface in org.apache.calcite.rel.metadata">BuiltInMetadata.ExplainVisibility.Handler</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#explainVisibilityHandler">explainVisibilityHandler</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>private <a href="BuiltInMetadata.ExpressionLineage.Handler.html" title="interface in org.apache.calcite.rel.metadata">BuiltInMetadata.ExpressionLineage.Handler</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#expressionLineageHandler">expressionLineageHandler</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>java.util.Map&lt;java.util.List,&#8203;java.lang.Object&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#map">map</a></span></code></th>
<td class="colLast">
<div class="block">Set of active metadata queries, and cache of previous results.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>private <a href="BuiltInMetadata.MaxRowCount.Handler.html" title="interface in org.apache.calcite.rel.metadata">BuiltInMetadata.MaxRowCount.Handler</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#maxRowCountHandler">maxRowCountHandler</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private <a href="BuiltInMetadata.Memory.Handler.html" title="interface in org.apache.calcite.rel.metadata">BuiltInMetadata.Memory.Handler</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#memoryHandler">memoryHandler</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="JaninoRelMetadataProvider.html" title="class in org.apache.calcite.rel.metadata">JaninoRelMetadataProvider</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#metadataProvider">metadataProvider</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private <a href="BuiltInMetadata.MinRowCount.Handler.html" title="interface in org.apache.calcite.rel.metadata">BuiltInMetadata.MinRowCount.Handler</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#minRowCountHandler">minRowCountHandler</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>private <a href="BuiltInMetadata.NodeTypes.Handler.html" title="interface in org.apache.calcite.rel.metadata">BuiltInMetadata.NodeTypes.Handler</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#nodeTypesHandler">nodeTypesHandler</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private <a href="BuiltInMetadata.NonCumulativeCost.Handler.html" title="interface in org.apache.calcite.rel.metadata">BuiltInMetadata.NonCumulativeCost.Handler</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#nonCumulativeCostHandler">nonCumulativeCostHandler</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>private <a href="BuiltInMetadata.Parallelism.Handler.html" title="interface in org.apache.calcite.rel.metadata">BuiltInMetadata.Parallelism.Handler</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#parallelismHandler">parallelismHandler</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private <a href="BuiltInMetadata.PercentageOriginalRows.Handler.html" title="interface in org.apache.calcite.rel.metadata">BuiltInMetadata.PercentageOriginalRows.Handler</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#percentageOriginalRowsHandler">percentageOriginalRowsHandler</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>private <a href="BuiltInMetadata.PopulationSize.Handler.html" title="interface in org.apache.calcite.rel.metadata">BuiltInMetadata.PopulationSize.Handler</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#populationSizeHandler">populationSizeHandler</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private <a href="BuiltInMetadata.Predicates.Handler.html" title="interface in org.apache.calcite.rel.metadata">BuiltInMetadata.Predicates.Handler</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#predicatesHandler">predicatesHandler</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>private <a href="BuiltInMetadata.RowCount.Handler.html" title="interface in org.apache.calcite.rel.metadata">BuiltInMetadata.RowCount.Handler</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#rowCountHandler">rowCountHandler</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private <a href="BuiltInMetadata.Selectivity.Handler.html" title="interface in org.apache.calcite.rel.metadata">BuiltInMetadata.Selectivity.Handler</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#selectivityHandler">selectivityHandler</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>private <a href="BuiltInMetadata.Size.Handler.html" title="interface in org.apache.calcite.rel.metadata">BuiltInMetadata.Size.Handler</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#sizeHandler">sizeHandler</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private <a href="BuiltInMetadata.TableReferences.Handler.html" title="interface in org.apache.calcite.rel.metadata">BuiltInMetadata.TableReferences.Handler</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#tableReferencesHandler">tableReferencesHandler</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static java.lang.ThreadLocal&lt;<a href="JaninoRelMetadataProvider.html" title="class in org.apache.calcite.rel.metadata">JaninoRelMetadataProvider</a>&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#THREAD_PROVIDERS">THREAD_PROVIDERS</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private <a href="BuiltInMetadata.UniqueKeys.Handler.html" title="interface in org.apache.calcite.rel.metadata">BuiltInMetadata.UniqueKeys.Handler</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#uniqueKeysHandler">uniqueKeysHandler</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
</table>
</li>
</ul>
</section>
<!-- ======== CONSTRUCTOR SUMMARY ======== -->
<section role="region">
<ul class="blockList">
<li class="blockList"><a id="constructor.summary">
<!-- -->
</a>
<h3>Constructor Summary</h3>
<table class="memberSummary">
<caption><span>Constructors</span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Modifier</th>
<th class="colSecond" scope="col">Constructor</th>
<th class="colLast" scope="col">Description</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private </code></td>
<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(boolean)">RelMetadataQuery</a></span>&#8203;(boolean&nbsp;dummy)</code></th>
<td class="colLast">
<div class="block">Creates and initializes the instance that will serve as a prototype for
all other instances.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>protected </code></td>
<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(org.apache.calcite.rel.metadata.JaninoRelMetadataProvider,org.apache.calcite.rel.metadata.RelMetadataQuery)">RelMetadataQuery</a></span>&#8203;(<a href="JaninoRelMetadataProvider.html" title="class in org.apache.calcite.rel.metadata">JaninoRelMetadataProvider</a>&nbsp;metadataProvider,
<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;prototype)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
</table>
</li>
</ul>
</section>
<!-- ========== METHOD SUMMARY =========== -->
<section role="region">
<ul class="blockList">
<li class="blockList"><a id="method.summary">
<!-- -->
</a>
<h3>Method Summary</h3>
<table class="memberSummary">
<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd">&nbsp;</span></span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colSecond" scope="col">Method</th>
<th class="colLast" scope="col">Description</th>
</tr>
<tr id="i0" class="altColor">
<td class="colFirst"><code>java.lang.Boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#areColumnsUnique(org.apache.calcite.rel.RelNode,org.apache.calcite.util.ImmutableBitSet)">areColumnsUnique</a></span>&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel,
<a href="../../util/ImmutableBitSet.html" title="class in org.apache.calcite.util">ImmutableBitSet</a>&nbsp;columns)</code></th>
<td class="colLast">
<div class="block">Returns the
<a href="BuiltInMetadata.ColumnUniqueness.html#areColumnsUnique(org.apache.calcite.util.ImmutableBitSet,boolean)"><code>BuiltInMetadata.ColumnUniqueness.areColumnsUnique(ImmutableBitSet, boolean)</code></a>
statistic.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>java.lang.Boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#areColumnsUnique(org.apache.calcite.rel.RelNode,org.apache.calcite.util.ImmutableBitSet,boolean)">areColumnsUnique</a></span>&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel,
<a href="../../util/ImmutableBitSet.html" title="class in org.apache.calcite.util">ImmutableBitSet</a>&nbsp;columns,
boolean&nbsp;ignoreNulls)</code></th>
<td class="colLast">
<div class="block">Returns the
<a href="BuiltInMetadata.ColumnUniqueness.html#areColumnsUnique(org.apache.calcite.util.ImmutableBitSet,boolean)"><code>BuiltInMetadata.ColumnUniqueness.areColumnsUnique(ImmutableBitSet, boolean)</code></a>
statistic.</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>java.lang.Boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#areRowsUnique(org.apache.calcite.rel.RelNode)">areRowsUnique</a></span>&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel)</code></th>
<td class="colLast">
<div class="block">Returns whether the rows of a given relational expression are distinct.</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>com.google.common.collect.ImmutableList&lt;<a href="../RelCollation.html" title="interface in org.apache.calcite.rel">RelCollation</a>&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#collations(org.apache.calcite.rel.RelNode)">collations</a></span>&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel)</code></th>
<td class="colLast">
<div class="block">Returns the
<a href="BuiltInMetadata.Collation.html#collations()"><code>BuiltInMetadata.Collation.collations()</code></a>
statistic.</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>java.lang.Double</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#cumulativeMemoryWithinPhase(org.apache.calcite.rel.RelNode)">cumulativeMemoryWithinPhase</a></span>&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel)</code></th>
<td class="colLast">
<div class="block">Returns the
<a href="BuiltInMetadata.Memory.html#cumulativeMemoryWithinPhase()"><code>BuiltInMetadata.Memory.cumulativeMemoryWithinPhase()</code></a>
statistic.</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>java.lang.Double</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#cumulativeMemoryWithinPhaseSplit(org.apache.calcite.rel.RelNode)">cumulativeMemoryWithinPhaseSplit</a></span>&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel)</code></th>
<td class="colLast">
<div class="block">Returns the
<a href="BuiltInMetadata.Memory.html#cumulativeMemoryWithinPhaseSplit()"><code>BuiltInMetadata.Memory.cumulativeMemoryWithinPhaseSplit()</code></a>
statistic.</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code><a href="../RelDistribution.html" title="interface in org.apache.calcite.rel">RelDistribution</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#distribution(org.apache.calcite.rel.RelNode)">distribution</a></span>&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel)</code></th>
<td class="colLast">
<div class="block">Returns the
<a href="BuiltInMetadata.Distribution.html#distribution()"><code>BuiltInMetadata.Distribution.distribution()</code></a>
statistic.</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="#getAllPredicates(org.apache.calcite.rel.RelNode)">getAllPredicates</a></span>&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel)</code></th>
<td class="colLast">
<div class="block">Returns the
<a href="BuiltInMetadata.AllPredicates.html#getAllPredicates()"><code>BuiltInMetadata.AllPredicates.getAllPredicates()</code></a>
statistic.</div>
</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>java.util.List&lt;java.lang.Double&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getAverageColumnSizes(org.apache.calcite.rel.RelNode)">getAverageColumnSizes</a></span>&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel)</code></th>
<td class="colLast">
<div class="block">Returns the
<a href="BuiltInMetadata.Size.html#averageColumnSizes()"><code>BuiltInMetadata.Size.averageColumnSizes()</code></a>
statistic.</div>
</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code>java.util.List&lt;java.lang.Double&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getAverageColumnSizesNotNull(org.apache.calcite.rel.RelNode)">getAverageColumnSizesNotNull</a></span>&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel)</code></th>
<td class="colLast">
<div class="block">As <a href="#getAverageColumnSizes(org.apache.calcite.rel.RelNode)"><code>getAverageColumnSizes(org.apache.calcite.rel.RelNode)</code></a> but
never returns a null list, only ever a list of nulls.</div>
</td>
</tr>
<tr id="i10" class="altColor">
<td class="colFirst"><code>java.lang.Double</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getAverageRowSize(org.apache.calcite.rel.RelNode)">getAverageRowSize</a></span>&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel)</code></th>
<td class="colLast">
<div class="block">Returns the
<a href="BuiltInMetadata.Size.html#averageRowSize()"><code>BuiltInMetadata.Size.averageRowSize()</code></a>
statistic.</div>
</td>
</tr>
<tr id="i11" class="rowColor">
<td class="colFirst"><code><a href="RelColumnOrigin.html" title="class in org.apache.calcite.rel.metadata">RelColumnOrigin</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getColumnOrigin(org.apache.calcite.rel.RelNode,int)">getColumnOrigin</a></span>&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel,
int&nbsp;column)</code></th>
<td class="colLast">
<div class="block">Determines the origin of a column, provided the column maps to a single
column that isn't derived.</div>
</td>
</tr>
<tr id="i12" class="altColor">
<td class="colFirst"><code>java.util.Set&lt;<a href="RelColumnOrigin.html" title="class in org.apache.calcite.rel.metadata">RelColumnOrigin</a>&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getColumnOrigins(org.apache.calcite.rel.RelNode,int)">getColumnOrigins</a></span>&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel,
int&nbsp;column)</code></th>
<td class="colLast">
<div class="block">Returns the
<a href="BuiltInMetadata.ColumnOrigin.html#getColumnOrigins(int)"><code>BuiltInMetadata.ColumnOrigin.getColumnOrigins(int)</code></a>
statistic.</div>
</td>
</tr>
<tr id="i13" class="rowColor">
<td class="colFirst"><code><a href="../../plan/RelOptCost.html" title="interface in org.apache.calcite.plan">RelOptCost</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getCumulativeCost(org.apache.calcite.rel.RelNode)">getCumulativeCost</a></span>&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel)</code></th>
<td class="colLast">
<div class="block">Returns the
<a href="BuiltInMetadata.CumulativeCost.html#getCumulativeCost()"><code>BuiltInMetadata.CumulativeCost.getCumulativeCost()</code></a>
statistic.</div>
</td>
</tr>
<tr id="i14" class="altColor">
<td class="colFirst"><code>java.lang.Double</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getDistinctRowCount(org.apache.calcite.rel.RelNode,org.apache.calcite.util.ImmutableBitSet,org.apache.calcite.rex.RexNode)">getDistinctRowCount</a></span>&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel,
<a href="../../util/ImmutableBitSet.html" title="class in org.apache.calcite.util">ImmutableBitSet</a>&nbsp;groupKey,
<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;predicate)</code></th>
<td class="colLast">
<div class="block">Returns the
<a href="BuiltInMetadata.DistinctRowCount.html#getDistinctRowCount(org.apache.calcite.util.ImmutableBitSet,org.apache.calcite.rex.RexNode)"><code>BuiltInMetadata.DistinctRowCount.getDistinctRowCount(ImmutableBitSet, RexNode)</code></a>
statistic.</div>
</td>
</tr>
<tr id="i15" class="rowColor">
<td class="colFirst"><code><a href="../RelDistribution.html" title="interface in org.apache.calcite.rel">RelDistribution</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getDistribution(org.apache.calcite.rel.RelNode)">getDistribution</a></span>&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel)</code></th>
<td class="colLast">
<div class="block">Returns the
<a href="BuiltInMetadata.Distribution.html#distribution()"><code>BuiltInMetadata.Distribution.distribution()</code></a>
statistic.</div>
</td>
</tr>
<tr id="i16" class="altColor">
<td class="colFirst"><code>java.util.Set&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="#getExpressionLineage(org.apache.calcite.rel.RelNode,org.apache.calcite.rex.RexNode)">getExpressionLineage</a></span>&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel,
<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;expression)</code></th>
<td class="colLast">
<div class="block">Determines the origin of a column.</div>
</td>
</tr>
<tr id="i17" class="rowColor">
<td class="colFirst"><code>java.lang.Double</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getMaxRowCount(org.apache.calcite.rel.RelNode)">getMaxRowCount</a></span>&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel)</code></th>
<td class="colLast">
<div class="block">Returns the
<a href="BuiltInMetadata.MaxRowCount.html#getMaxRowCount()"><code>BuiltInMetadata.MaxRowCount.getMaxRowCount()</code></a>
statistic.</div>
</td>
</tr>
<tr id="i18" class="altColor">
<td class="colFirst"><code>java.lang.Double</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getMinRowCount(org.apache.calcite.rel.RelNode)">getMinRowCount</a></span>&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel)</code></th>
<td class="colLast">
<div class="block">Returns the
<a href="BuiltInMetadata.MinRowCount.html#getMinRowCount()"><code>BuiltInMetadata.MinRowCount.getMinRowCount()</code></a>
statistic.</div>
</td>
</tr>
<tr id="i19" class="rowColor">
<td class="colFirst"><code>com.google.common.collect.Multimap&lt;java.lang.Class&lt;? extends <a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&gt;,&#8203;<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getNodeTypes(org.apache.calcite.rel.RelNode)">getNodeTypes</a></span>&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel)</code></th>
<td class="colLast">
<div class="block">Returns the
<a href="BuiltInMetadata.NodeTypes.html#getNodeTypes()"><code>BuiltInMetadata.NodeTypes.getNodeTypes()</code></a>
statistic.</div>
</td>
</tr>
<tr id="i20" class="altColor">
<td class="colFirst"><code><a href="../../plan/RelOptCost.html" title="interface in org.apache.calcite.plan">RelOptCost</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getNonCumulativeCost(org.apache.calcite.rel.RelNode)">getNonCumulativeCost</a></span>&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel)</code></th>
<td class="colLast">
<div class="block">Returns the
<a href="BuiltInMetadata.NonCumulativeCost.html#getNonCumulativeCost()"><code>BuiltInMetadata.NonCumulativeCost.getNonCumulativeCost()</code></a>
statistic.</div>
</td>
</tr>
<tr id="i21" class="rowColor">
<td class="colFirst"><code>java.lang.Double</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getPercentageOriginalRows(org.apache.calcite.rel.RelNode)">getPercentageOriginalRows</a></span>&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel)</code></th>
<td class="colLast">
<div class="block">Returns the
<a href="BuiltInMetadata.PercentageOriginalRows.html#getPercentageOriginalRows()"><code>BuiltInMetadata.PercentageOriginalRows.getPercentageOriginalRows()</code></a>
statistic.</div>
</td>
</tr>
<tr id="i22" class="altColor">
<td class="colFirst"><code>java.lang.Double</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getPopulationSize(org.apache.calcite.rel.RelNode,org.apache.calcite.util.ImmutableBitSet)">getPopulationSize</a></span>&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel,
<a href="../../util/ImmutableBitSet.html" title="class in org.apache.calcite.util">ImmutableBitSet</a>&nbsp;groupKey)</code></th>
<td class="colLast">
<div class="block">Returns the
<a href="BuiltInMetadata.PopulationSize.html#getPopulationSize(org.apache.calcite.util.ImmutableBitSet)"><code>BuiltInMetadata.PopulationSize.getPopulationSize(ImmutableBitSet)</code></a>
statistic.</div>
</td>
</tr>
<tr id="i23" 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="#getPulledUpPredicates(org.apache.calcite.rel.RelNode)">getPulledUpPredicates</a></span>&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel)</code></th>
<td class="colLast">
<div class="block">Returns the
<a href="BuiltInMetadata.Predicates.html#getPredicates()"><code>BuiltInMetadata.Predicates.getPredicates()</code></a>
statistic.</div>
</td>
</tr>
<tr id="i24" class="altColor">
<td class="colFirst"><code>java.lang.Double</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getRowCount(org.apache.calcite.rel.RelNode)">getRowCount</a></span>&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel)</code></th>
<td class="colLast">
<div class="block">Returns the
<a href="BuiltInMetadata.RowCount.html#getRowCount()"><code>BuiltInMetadata.RowCount.getRowCount()</code></a>
statistic.</div>
</td>
</tr>
<tr id="i25" class="rowColor">
<td class="colFirst"><code>java.lang.Double</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getSelectivity(org.apache.calcite.rel.RelNode,org.apache.calcite.rex.RexNode)">getSelectivity</a></span>&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel,
<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;predicate)</code></th>
<td class="colLast">
<div class="block">Returns the
<a href="BuiltInMetadata.Selectivity.html#getSelectivity(org.apache.calcite.rex.RexNode)"><code>BuiltInMetadata.Selectivity.getSelectivity(RexNode)</code></a>
statistic.</div>
</td>
</tr>
<tr id="i26" class="altColor">
<td class="colFirst"><code><a href="../../plan/RelOptTable.html" title="interface in org.apache.calcite.plan">RelOptTable</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getTableOrigin(org.apache.calcite.rel.RelNode)">getTableOrigin</a></span>&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel)</code></th>
<td class="colLast">
<div class="block">Determines the origin of a <a href="../RelNode.html" title="interface in org.apache.calcite.rel"><code>RelNode</code></a>, provided it maps to a single
table, optionally with filtering and projection.</div>
</td>
</tr>
<tr id="i27" class="rowColor">
<td class="colFirst"><code>java.util.Set&lt;<a href="../../rex/RexTableInputRef.RelTableRef.html" title="class in org.apache.calcite.rex">RexTableInputRef.RelTableRef</a>&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getTableReferences(org.apache.calcite.rel.RelNode)">getTableReferences</a></span>&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel)</code></th>
<td class="colLast">
<div class="block">Determines the tables used by a plan.</div>
</td>
</tr>
<tr id="i28" class="altColor">
<td class="colFirst"><code>java.util.Set&lt;<a href="../../util/ImmutableBitSet.html" title="class in org.apache.calcite.util">ImmutableBitSet</a>&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getUniqueKeys(org.apache.calcite.rel.RelNode)">getUniqueKeys</a></span>&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel)</code></th>
<td class="colLast">
<div class="block">Returns the
<a href="BuiltInMetadata.UniqueKeys.html#getUniqueKeys(boolean)"><code>BuiltInMetadata.UniqueKeys.getUniqueKeys(boolean)</code></a>
statistic.</div>
</td>
</tr>
<tr id="i29" class="rowColor">
<td class="colFirst"><code>java.util.Set&lt;<a href="../../util/ImmutableBitSet.html" title="class in org.apache.calcite.util">ImmutableBitSet</a>&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getUniqueKeys(org.apache.calcite.rel.RelNode,boolean)">getUniqueKeys</a></span>&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel,
boolean&nbsp;ignoreNulls)</code></th>
<td class="colLast">
<div class="block">Returns the
<a href="BuiltInMetadata.UniqueKeys.html#getUniqueKeys(boolean)"><code>BuiltInMetadata.UniqueKeys.getUniqueKeys(boolean)</code></a>
statistic.</div>
</td>
</tr>
<tr id="i30" class="altColor">
<td class="colFirst"><code>protected static &lt;H&gt;&nbsp;H</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#initialHandler(java.lang.Class)">initialHandler</a></span>&#8203;(java.lang.Class&lt;H&gt;&nbsp;handlerClass)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i31" class="rowColor">
<td class="colFirst"><code>static <a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#instance()">instance</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns an instance of RelMetadataQuery.</div>
</td>
</tr>
<tr id="i32" class="altColor">
<td class="colFirst"><code>private static boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isNonNegative(java.lang.Double,boolean)">isNonNegative</a></span>&#8203;(java.lang.Double&nbsp;result,
boolean&nbsp;fail)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i33" class="rowColor">
<td class="colFirst"><code>private static boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isPercentage(java.lang.Double,boolean)">isPercentage</a></span>&#8203;(java.lang.Double&nbsp;result,
boolean&nbsp;fail)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i34" class="altColor">
<td class="colFirst"><code>java.lang.Boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isPhaseTransition(org.apache.calcite.rel.RelNode)">isPhaseTransition</a></span>&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel)</code></th>
<td class="colLast">
<div class="block">Returns the
<a href="BuiltInMetadata.Parallelism.html#isPhaseTransition()"><code>BuiltInMetadata.Parallelism.isPhaseTransition()</code></a>
statistic.</div>
</td>
</tr>
<tr id="i35" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isVisibleInExplain(org.apache.calcite.rel.RelNode,org.apache.calcite.sql.SqlExplainLevel)">isVisibleInExplain</a></span>&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel,
<a href="../../sql/SqlExplainLevel.html" title="enum in org.apache.calcite.sql">SqlExplainLevel</a>&nbsp;explainLevel)</code></th>
<td class="colLast">
<div class="block">Returns the
<a href="BuiltInMetadata.ExplainVisibility.html#isVisibleInExplain(org.apache.calcite.sql.SqlExplainLevel)"><code>BuiltInMetadata.ExplainVisibility.isVisibleInExplain(SqlExplainLevel)</code></a>
statistic.</div>
</td>
</tr>
<tr id="i36" class="altColor">
<td class="colFirst"><code>java.lang.Double</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#memory(org.apache.calcite.rel.RelNode)">memory</a></span>&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel)</code></th>
<td class="colLast">
<div class="block">Returns the
<a href="BuiltInMetadata.Memory.html#memory()"><code>BuiltInMetadata.Memory.memory()</code></a>
statistic.</div>
</td>
</tr>
<tr id="i37" class="rowColor">
<td class="colFirst"><code>protected &lt;M extends <a href="Metadata.html" title="interface in org.apache.calcite.rel.metadata">Metadata</a>,&#8203;H extends <a href="MetadataHandler.html" title="interface in org.apache.calcite.rel.metadata">MetadataHandler</a>&lt;M&gt;&gt;<br>H</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#revise(java.lang.Class,org.apache.calcite.rel.metadata.MetadataDef)">revise</a></span>&#8203;(java.lang.Class&lt;? extends <a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&gt;&nbsp;class_,
<a href="MetadataDef.html" title="class in org.apache.calcite.rel.metadata">MetadataDef</a>&lt;M&gt;&nbsp;def)</code></th>
<td class="colLast">
<div class="block">Re-generates the handler for a given kind of metadata, adding support for
<code>class_</code> if it is not already present.</div>
</td>
</tr>
<tr id="i38" class="altColor">
<td class="colFirst"><code>java.lang.Integer</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#splitCount(org.apache.calcite.rel.RelNode)">splitCount</a></span>&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel)</code></th>
<td class="colLast">
<div class="block">Returns the
<a href="BuiltInMetadata.Parallelism.html#splitCount()"><code>BuiltInMetadata.Parallelism.splitCount()</code></a>
statistic.</div>
</td>
</tr>
<tr id="i39" class="rowColor">
<td class="colFirst"><code>private static java.lang.Double</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#validatePercentage(java.lang.Double)">validatePercentage</a></span>&#8203;(java.lang.Double&nbsp;result)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i40" class="altColor">
<td class="colFirst"><code>private static java.lang.Double</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#validateResult(java.lang.Double)">validateResult</a></span>&#8203;(java.lang.Double&nbsp;result)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
</table>
<ul class="blockList">
<li class="blockList"><a id="methods.inherited.from.class.java.lang.Object">
<!-- -->
</a>
<h3>Methods inherited from class&nbsp;java.lang.Object</h3>
<code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li>
</ul>
</li>
</ul>
</section>
</li>
</ul>
</div>
<div class="details">
<ul class="blockList">
<li class="blockList">
<!-- ============ FIELD DETAIL =========== -->
<section role="region">
<ul class="blockList">
<li class="blockList"><a id="field.detail">
<!-- -->
</a>
<h3>Field Detail</h3>
<a id="map">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>map</h4>
<pre>public final&nbsp;java.util.Map&lt;java.util.List,&#8203;java.lang.Object&gt; map</pre>
<div class="block">Set of active metadata queries, and cache of previous results.</div>
</li>
</ul>
<a id="metadataProvider">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>metadataProvider</h4>
<pre>public final&nbsp;<a href="JaninoRelMetadataProvider.html" title="class in org.apache.calcite.rel.metadata">JaninoRelMetadataProvider</a> metadataProvider</pre>
</li>
</ul>
<a id="EMPTY">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>EMPTY</h4>
<pre>protected static final&nbsp;<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a> EMPTY</pre>
</li>
</ul>
<a id="collationHandler">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>collationHandler</h4>
<pre>private&nbsp;<a href="BuiltInMetadata.Collation.Handler.html" title="interface in org.apache.calcite.rel.metadata">BuiltInMetadata.Collation.Handler</a> collationHandler</pre>
</li>
</ul>
<a id="columnOriginHandler">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>columnOriginHandler</h4>
<pre>private&nbsp;<a href="BuiltInMetadata.ColumnOrigin.Handler.html" title="interface in org.apache.calcite.rel.metadata">BuiltInMetadata.ColumnOrigin.Handler</a> columnOriginHandler</pre>
</li>
</ul>
<a id="expressionLineageHandler">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>expressionLineageHandler</h4>
<pre>private&nbsp;<a href="BuiltInMetadata.ExpressionLineage.Handler.html" title="interface in org.apache.calcite.rel.metadata">BuiltInMetadata.ExpressionLineage.Handler</a> expressionLineageHandler</pre>
</li>
</ul>
<a id="tableReferencesHandler">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>tableReferencesHandler</h4>
<pre>private&nbsp;<a href="BuiltInMetadata.TableReferences.Handler.html" title="interface in org.apache.calcite.rel.metadata">BuiltInMetadata.TableReferences.Handler</a> tableReferencesHandler</pre>
</li>
</ul>
<a id="columnUniquenessHandler">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>columnUniquenessHandler</h4>
<pre>private&nbsp;<a href="BuiltInMetadata.ColumnUniqueness.Handler.html" title="interface in org.apache.calcite.rel.metadata">BuiltInMetadata.ColumnUniqueness.Handler</a> columnUniquenessHandler</pre>
</li>
</ul>
<a id="cumulativeCostHandler">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>cumulativeCostHandler</h4>
<pre>private&nbsp;<a href="BuiltInMetadata.CumulativeCost.Handler.html" title="interface in org.apache.calcite.rel.metadata">BuiltInMetadata.CumulativeCost.Handler</a> cumulativeCostHandler</pre>
</li>
</ul>
<a id="distinctRowCountHandler">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>distinctRowCountHandler</h4>
<pre>private&nbsp;<a href="BuiltInMetadata.DistinctRowCount.Handler.html" title="interface in org.apache.calcite.rel.metadata">BuiltInMetadata.DistinctRowCount.Handler</a> distinctRowCountHandler</pre>
</li>
</ul>
<a id="distributionHandler">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>distributionHandler</h4>
<pre>private&nbsp;<a href="BuiltInMetadata.Distribution.Handler.html" title="interface in org.apache.calcite.rel.metadata">BuiltInMetadata.Distribution.Handler</a> distributionHandler</pre>
</li>
</ul>
<a id="explainVisibilityHandler">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>explainVisibilityHandler</h4>
<pre>private&nbsp;<a href="BuiltInMetadata.ExplainVisibility.Handler.html" title="interface in org.apache.calcite.rel.metadata">BuiltInMetadata.ExplainVisibility.Handler</a> explainVisibilityHandler</pre>
</li>
</ul>
<a id="maxRowCountHandler">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>maxRowCountHandler</h4>
<pre>private&nbsp;<a href="BuiltInMetadata.MaxRowCount.Handler.html" title="interface in org.apache.calcite.rel.metadata">BuiltInMetadata.MaxRowCount.Handler</a> maxRowCountHandler</pre>
</li>
</ul>
<a id="minRowCountHandler">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>minRowCountHandler</h4>
<pre>private&nbsp;<a href="BuiltInMetadata.MinRowCount.Handler.html" title="interface in org.apache.calcite.rel.metadata">BuiltInMetadata.MinRowCount.Handler</a> minRowCountHandler</pre>
</li>
</ul>
<a id="memoryHandler">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>memoryHandler</h4>
<pre>private&nbsp;<a href="BuiltInMetadata.Memory.Handler.html" title="interface in org.apache.calcite.rel.metadata">BuiltInMetadata.Memory.Handler</a> memoryHandler</pre>
</li>
</ul>
<a id="nonCumulativeCostHandler">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>nonCumulativeCostHandler</h4>
<pre>private&nbsp;<a href="BuiltInMetadata.NonCumulativeCost.Handler.html" title="interface in org.apache.calcite.rel.metadata">BuiltInMetadata.NonCumulativeCost.Handler</a> nonCumulativeCostHandler</pre>
</li>
</ul>
<a id="parallelismHandler">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>parallelismHandler</h4>
<pre>private&nbsp;<a href="BuiltInMetadata.Parallelism.Handler.html" title="interface in org.apache.calcite.rel.metadata">BuiltInMetadata.Parallelism.Handler</a> parallelismHandler</pre>
</li>
</ul>
<a id="percentageOriginalRowsHandler">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>percentageOriginalRowsHandler</h4>
<pre>private&nbsp;<a href="BuiltInMetadata.PercentageOriginalRows.Handler.html" title="interface in org.apache.calcite.rel.metadata">BuiltInMetadata.PercentageOriginalRows.Handler</a> percentageOriginalRowsHandler</pre>
</li>
</ul>
<a id="populationSizeHandler">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>populationSizeHandler</h4>
<pre>private&nbsp;<a href="BuiltInMetadata.PopulationSize.Handler.html" title="interface in org.apache.calcite.rel.metadata">BuiltInMetadata.PopulationSize.Handler</a> populationSizeHandler</pre>
</li>
</ul>
<a id="predicatesHandler">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>predicatesHandler</h4>
<pre>private&nbsp;<a href="BuiltInMetadata.Predicates.Handler.html" title="interface in org.apache.calcite.rel.metadata">BuiltInMetadata.Predicates.Handler</a> predicatesHandler</pre>
</li>
</ul>
<a id="allPredicatesHandler">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>allPredicatesHandler</h4>
<pre>private&nbsp;<a href="BuiltInMetadata.AllPredicates.Handler.html" title="interface in org.apache.calcite.rel.metadata">BuiltInMetadata.AllPredicates.Handler</a> allPredicatesHandler</pre>
</li>
</ul>
<a id="nodeTypesHandler">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>nodeTypesHandler</h4>
<pre>private&nbsp;<a href="BuiltInMetadata.NodeTypes.Handler.html" title="interface in org.apache.calcite.rel.metadata">BuiltInMetadata.NodeTypes.Handler</a> nodeTypesHandler</pre>
</li>
</ul>
<a id="rowCountHandler">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>rowCountHandler</h4>
<pre>private&nbsp;<a href="BuiltInMetadata.RowCount.Handler.html" title="interface in org.apache.calcite.rel.metadata">BuiltInMetadata.RowCount.Handler</a> rowCountHandler</pre>
</li>
</ul>
<a id="selectivityHandler">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>selectivityHandler</h4>
<pre>private&nbsp;<a href="BuiltInMetadata.Selectivity.Handler.html" title="interface in org.apache.calcite.rel.metadata">BuiltInMetadata.Selectivity.Handler</a> selectivityHandler</pre>
</li>
</ul>
<a id="sizeHandler">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>sizeHandler</h4>
<pre>private&nbsp;<a href="BuiltInMetadata.Size.Handler.html" title="interface in org.apache.calcite.rel.metadata">BuiltInMetadata.Size.Handler</a> sizeHandler</pre>
</li>
</ul>
<a id="uniqueKeysHandler">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>uniqueKeysHandler</h4>
<pre>private&nbsp;<a href="BuiltInMetadata.UniqueKeys.Handler.html" title="interface in org.apache.calcite.rel.metadata">BuiltInMetadata.UniqueKeys.Handler</a> uniqueKeysHandler</pre>
</li>
</ul>
<a id="THREAD_PROVIDERS">
<!-- -->
</a>
<ul class="blockListLast">
<li class="blockList">
<h4>THREAD_PROVIDERS</h4>
<pre>public static final&nbsp;java.lang.ThreadLocal&lt;<a href="JaninoRelMetadataProvider.html" title="class in org.apache.calcite.rel.metadata">JaninoRelMetadataProvider</a>&gt; THREAD_PROVIDERS</pre>
</li>
</ul>
</li>
</ul>
</section>
<!-- ========= CONSTRUCTOR DETAIL ======== -->
<section role="region">
<ul class="blockList">
<li class="blockList"><a id="constructor.detail">
<!-- -->
</a>
<h3>Constructor Detail</h3>
<a id="&lt;init&gt;(org.apache.calcite.rel.metadata.JaninoRelMetadataProvider,org.apache.calcite.rel.metadata.RelMetadataQuery)">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>RelMetadataQuery</h4>
<pre>protected&nbsp;RelMetadataQuery&#8203;(<a href="JaninoRelMetadataProvider.html" title="class in org.apache.calcite.rel.metadata">JaninoRelMetadataProvider</a>&nbsp;metadataProvider,
<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;prototype)</pre>
</li>
</ul>
<a id="&lt;init&gt;(boolean)">
<!-- -->
</a>
<ul class="blockListLast">
<li class="blockList">
<h4>RelMetadataQuery</h4>
<pre>private&nbsp;RelMetadataQuery&#8203;(boolean&nbsp;dummy)</pre>
<div class="block">Creates and initializes the instance that will serve as a prototype for
all other instances.</div>
</li>
</ul>
</li>
</ul>
</section>
<!-- ============ METHOD DETAIL ========== -->
<section role="region">
<ul class="blockList">
<li class="blockList"><a id="method.detail">
<!-- -->
</a>
<h3>Method Detail</h3>
<a id="initialHandler(java.lang.Class)">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>initialHandler</h4>
<pre class="methodSignature">protected static&nbsp;&lt;H&gt;&nbsp;H&nbsp;initialHandler&#8203;(java.lang.Class&lt;H&gt;&nbsp;handlerClass)</pre>
</li>
</ul>
<a id="instance()">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>instance</h4>
<pre class="methodSignature">public static&nbsp;<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;instance()</pre>
<div class="block">Returns an instance of RelMetadataQuery. It ensures that cycles do not
occur while computing metadata.</div>
</li>
</ul>
<a id="revise(java.lang.Class,org.apache.calcite.rel.metadata.MetadataDef)">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>revise</h4>
<pre class="methodSignature">protected&nbsp;&lt;M extends <a href="Metadata.html" title="interface in org.apache.calcite.rel.metadata">Metadata</a>,&#8203;H extends <a href="MetadataHandler.html" title="interface in org.apache.calcite.rel.metadata">MetadataHandler</a>&lt;M&gt;&gt;&nbsp;H&nbsp;revise&#8203;(java.lang.Class&lt;? extends <a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&gt;&nbsp;class_,
<a href="MetadataDef.html" title="class in org.apache.calcite.rel.metadata">MetadataDef</a>&lt;M&gt;&nbsp;def)</pre>
<div class="block">Re-generates the handler for a given kind of metadata, adding support for
<code>class_</code> if it is not already present.</div>
</li>
</ul>
<a id="getNodeTypes(org.apache.calcite.rel.RelNode)">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>getNodeTypes</h4>
<pre class="methodSignature">public&nbsp;com.google.common.collect.Multimap&lt;java.lang.Class&lt;? extends <a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&gt;,&#8203;<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&gt;&nbsp;getNodeTypes&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel)</pre>
<div class="block">Returns the
<a href="BuiltInMetadata.NodeTypes.html#getNodeTypes()"><code>BuiltInMetadata.NodeTypes.getNodeTypes()</code></a>
statistic.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>rel</code> - the relational expression</dd>
</dl>
</li>
</ul>
<a id="getRowCount(org.apache.calcite.rel.RelNode)">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>getRowCount</h4>
<pre class="methodSignature">public&nbsp;java.lang.Double&nbsp;getRowCount&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel)</pre>
<div class="block">Returns the
<a href="BuiltInMetadata.RowCount.html#getRowCount()"><code>BuiltInMetadata.RowCount.getRowCount()</code></a>
statistic.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>rel</code> - the relational expression</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>estimated row count, or null if no reliable estimate can be
determined</dd>
</dl>
</li>
</ul>
<a id="getMaxRowCount(org.apache.calcite.rel.RelNode)">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>getMaxRowCount</h4>
<pre class="methodSignature">public&nbsp;java.lang.Double&nbsp;getMaxRowCount&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel)</pre>
<div class="block">Returns the
<a href="BuiltInMetadata.MaxRowCount.html#getMaxRowCount()"><code>BuiltInMetadata.MaxRowCount.getMaxRowCount()</code></a>
statistic.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>rel</code> - the relational expression</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>max row count</dd>
</dl>
</li>
</ul>
<a id="getMinRowCount(org.apache.calcite.rel.RelNode)">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>getMinRowCount</h4>
<pre class="methodSignature">public&nbsp;java.lang.Double&nbsp;getMinRowCount&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel)</pre>
<div class="block">Returns the
<a href="BuiltInMetadata.MinRowCount.html#getMinRowCount()"><code>BuiltInMetadata.MinRowCount.getMinRowCount()</code></a>
statistic.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>rel</code> - the relational expression</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>max row count</dd>
</dl>
</li>
</ul>
<a id="getCumulativeCost(org.apache.calcite.rel.RelNode)">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>getCumulativeCost</h4>
<pre class="methodSignature">public&nbsp;<a href="../../plan/RelOptCost.html" title="interface in org.apache.calcite.plan">RelOptCost</a>&nbsp;getCumulativeCost&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel)</pre>
<div class="block">Returns the
<a href="BuiltInMetadata.CumulativeCost.html#getCumulativeCost()"><code>BuiltInMetadata.CumulativeCost.getCumulativeCost()</code></a>
statistic.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>rel</code> - the relational expression</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>estimated cost, or null if no reliable estimate can be determined</dd>
</dl>
</li>
</ul>
<a id="getNonCumulativeCost(org.apache.calcite.rel.RelNode)">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>getNonCumulativeCost</h4>
<pre class="methodSignature">public&nbsp;<a href="../../plan/RelOptCost.html" title="interface in org.apache.calcite.plan">RelOptCost</a>&nbsp;getNonCumulativeCost&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel)</pre>
<div class="block">Returns the
<a href="BuiltInMetadata.NonCumulativeCost.html#getNonCumulativeCost()"><code>BuiltInMetadata.NonCumulativeCost.getNonCumulativeCost()</code></a>
statistic.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>rel</code> - the relational expression</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>estimated cost, or null if no reliable estimate can be determined</dd>
</dl>
</li>
</ul>
<a id="getPercentageOriginalRows(org.apache.calcite.rel.RelNode)">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>getPercentageOriginalRows</h4>
<pre class="methodSignature">public&nbsp;java.lang.Double&nbsp;getPercentageOriginalRows&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel)</pre>
<div class="block">Returns the
<a href="BuiltInMetadata.PercentageOriginalRows.html#getPercentageOriginalRows()"><code>BuiltInMetadata.PercentageOriginalRows.getPercentageOriginalRows()</code></a>
statistic.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>rel</code> - the relational expression</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>estimated percentage (between 0.0 and 1.0), or null if no
reliable estimate can be determined</dd>
</dl>
</li>
</ul>
<a id="getColumnOrigins(org.apache.calcite.rel.RelNode,int)">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>getColumnOrigins</h4>
<pre class="methodSignature">public&nbsp;java.util.Set&lt;<a href="RelColumnOrigin.html" title="class in org.apache.calcite.rel.metadata">RelColumnOrigin</a>&gt;&nbsp;getColumnOrigins&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel,
int&nbsp;column)</pre>
<div class="block">Returns the
<a href="BuiltInMetadata.ColumnOrigin.html#getColumnOrigins(int)"><code>BuiltInMetadata.ColumnOrigin.getColumnOrigins(int)</code></a>
statistic.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>rel</code> - the relational expression</dd>
<dd><code>column</code> - 0-based ordinal for output column of interest</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>set of origin columns, or null if this information cannot be
determined (whereas empty set indicates definitely no origin columns at
all)</dd>
</dl>
</li>
</ul>
<a id="getColumnOrigin(org.apache.calcite.rel.RelNode,int)">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>getColumnOrigin</h4>
<pre class="methodSignature">public&nbsp;<a href="RelColumnOrigin.html" title="class in org.apache.calcite.rel.metadata">RelColumnOrigin</a>&nbsp;getColumnOrigin&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel,
int&nbsp;column)</pre>
<div class="block">Determines the origin of a column, provided the column maps to a single
column that isn't derived.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>rel</code> - the RelNode of the column</dd>
<dd><code>column</code> - the offset of the column whose origin we are trying to
determine</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the origin of a column provided it's a simple column; otherwise,
returns null</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="#getColumnOrigins(org.apache.calcite.rel.RelNode,int)"><code>getColumnOrigins(org.apache.calcite.rel.RelNode, int)</code></a></dd>
</dl>
</li>
</ul>
<a id="getExpressionLineage(org.apache.calcite.rel.RelNode,org.apache.calcite.rex.RexNode)">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>getExpressionLineage</h4>
<pre class="methodSignature">public&nbsp;java.util.Set&lt;<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;getExpressionLineage&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel,
<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;expression)</pre>
<div class="block">Determines the origin of a column.</div>
</li>
</ul>
<a id="getTableReferences(org.apache.calcite.rel.RelNode)">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>getTableReferences</h4>
<pre class="methodSignature">public&nbsp;java.util.Set&lt;<a href="../../rex/RexTableInputRef.RelTableRef.html" title="class in org.apache.calcite.rex">RexTableInputRef.RelTableRef</a>&gt;&nbsp;getTableReferences&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel)</pre>
<div class="block">Determines the tables used by a plan.</div>
</li>
</ul>
<a id="getTableOrigin(org.apache.calcite.rel.RelNode)">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>getTableOrigin</h4>
<pre class="methodSignature">public&nbsp;<a href="../../plan/RelOptTable.html" title="interface in org.apache.calcite.plan">RelOptTable</a>&nbsp;getTableOrigin&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel)</pre>
<div class="block">Determines the origin of a <a href="../RelNode.html" title="interface in org.apache.calcite.rel"><code>RelNode</code></a>, provided it maps to a single
table, optionally with filtering and projection.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>rel</code> - the RelNode</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the table, if the RelNode is a simple table; otherwise null</dd>
</dl>
</li>
</ul>
<a id="getSelectivity(org.apache.calcite.rel.RelNode,org.apache.calcite.rex.RexNode)">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>getSelectivity</h4>
<pre class="methodSignature">public&nbsp;java.lang.Double&nbsp;getSelectivity&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel,
<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;predicate)</pre>
<div class="block">Returns the
<a href="BuiltInMetadata.Selectivity.html#getSelectivity(org.apache.calcite.rex.RexNode)"><code>BuiltInMetadata.Selectivity.getSelectivity(RexNode)</code></a>
statistic.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>rel</code> - the relational expression</dd>
<dd><code>predicate</code> - predicate whose selectivity is to be estimated against
<code>rel</code>'s output</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>estimated selectivity (between 0.0 and 1.0), or null if no
reliable estimate can be determined</dd>
</dl>
</li>
</ul>
<a id="getUniqueKeys(org.apache.calcite.rel.RelNode)">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>getUniqueKeys</h4>
<pre class="methodSignature">public&nbsp;java.util.Set&lt;<a href="../../util/ImmutableBitSet.html" title="class in org.apache.calcite.util">ImmutableBitSet</a>&gt;&nbsp;getUniqueKeys&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel)</pre>
<div class="block">Returns the
<a href="BuiltInMetadata.UniqueKeys.html#getUniqueKeys(boolean)"><code>BuiltInMetadata.UniqueKeys.getUniqueKeys(boolean)</code></a>
statistic.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>rel</code> - the relational expression</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>set of keys, or null if this information cannot be determined
(whereas empty set indicates definitely no keys at all)</dd>
</dl>
</li>
</ul>
<a id="getUniqueKeys(org.apache.calcite.rel.RelNode,boolean)">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>getUniqueKeys</h4>
<pre class="methodSignature">public&nbsp;java.util.Set&lt;<a href="../../util/ImmutableBitSet.html" title="class in org.apache.calcite.util">ImmutableBitSet</a>&gt;&nbsp;getUniqueKeys&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel,
boolean&nbsp;ignoreNulls)</pre>
<div class="block">Returns the
<a href="BuiltInMetadata.UniqueKeys.html#getUniqueKeys(boolean)"><code>BuiltInMetadata.UniqueKeys.getUniqueKeys(boolean)</code></a>
statistic.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>rel</code> - the relational expression</dd>
<dd><code>ignoreNulls</code> - if true, ignore null values when determining
whether the keys are unique</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>set of keys, or null if this information cannot be determined
(whereas empty set indicates definitely no keys at all)</dd>
</dl>
</li>
</ul>
<a id="areRowsUnique(org.apache.calcite.rel.RelNode)">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>areRowsUnique</h4>
<pre class="methodSignature">public&nbsp;java.lang.Boolean&nbsp;areRowsUnique&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel)</pre>
<div class="block">Returns whether the rows of a given relational expression are distinct.
This is derived by applying the
<a href="BuiltInMetadata.ColumnUniqueness.html#areColumnsUnique(org.apache.calcite.util.ImmutableBitSet,boolean)"><code>BuiltInMetadata.ColumnUniqueness.areColumnsUnique(org.apache.calcite.util.ImmutableBitSet, boolean)</code></a>
statistic over all columns.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>rel</code> - the relational expression</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>true or false depending on whether the rows are unique, or
null if not enough information is available to make that determination</dd>
</dl>
</li>
</ul>
<a id="areColumnsUnique(org.apache.calcite.rel.RelNode,org.apache.calcite.util.ImmutableBitSet)">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>areColumnsUnique</h4>
<pre class="methodSignature">public&nbsp;java.lang.Boolean&nbsp;areColumnsUnique&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel,
<a href="../../util/ImmutableBitSet.html" title="class in org.apache.calcite.util">ImmutableBitSet</a>&nbsp;columns)</pre>
<div class="block">Returns the
<a href="BuiltInMetadata.ColumnUniqueness.html#areColumnsUnique(org.apache.calcite.util.ImmutableBitSet,boolean)"><code>BuiltInMetadata.ColumnUniqueness.areColumnsUnique(ImmutableBitSet, boolean)</code></a>
statistic.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>rel</code> - the relational expression</dd>
<dd><code>columns</code> - column mask representing the subset of columns for which
uniqueness will be determined</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>true or false depending on whether the columns are unique, or
null if not enough information is available to make that determination</dd>
</dl>
</li>
</ul>
<a id="areColumnsUnique(org.apache.calcite.rel.RelNode,org.apache.calcite.util.ImmutableBitSet,boolean)">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>areColumnsUnique</h4>
<pre class="methodSignature">public&nbsp;java.lang.Boolean&nbsp;areColumnsUnique&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel,
<a href="../../util/ImmutableBitSet.html" title="class in org.apache.calcite.util">ImmutableBitSet</a>&nbsp;columns,
boolean&nbsp;ignoreNulls)</pre>
<div class="block">Returns the
<a href="BuiltInMetadata.ColumnUniqueness.html#areColumnsUnique(org.apache.calcite.util.ImmutableBitSet,boolean)"><code>BuiltInMetadata.ColumnUniqueness.areColumnsUnique(ImmutableBitSet, boolean)</code></a>
statistic.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>rel</code> - the relational expression</dd>
<dd><code>columns</code> - column mask representing the subset of columns for which
uniqueness will be determined</dd>
<dd><code>ignoreNulls</code> - if true, ignore null values when determining column
uniqueness</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>true or false depending on whether the columns are unique, or
null if not enough information is available to make that determination</dd>
</dl>
</li>
</ul>
<a id="collations(org.apache.calcite.rel.RelNode)">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>collations</h4>
<pre class="methodSignature">public&nbsp;com.google.common.collect.ImmutableList&lt;<a href="../RelCollation.html" title="interface in org.apache.calcite.rel">RelCollation</a>&gt;&nbsp;collations&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel)</pre>
<div class="block">Returns the
<a href="BuiltInMetadata.Collation.html#collations()"><code>BuiltInMetadata.Collation.collations()</code></a>
statistic.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>rel</code> - the relational expression</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>List of sorted column combinations, or
null if not enough information is available to make that determination</dd>
</dl>
</li>
</ul>
<a id="distribution(org.apache.calcite.rel.RelNode)">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>distribution</h4>
<pre class="methodSignature">public&nbsp;<a href="../RelDistribution.html" title="interface in org.apache.calcite.rel">RelDistribution</a>&nbsp;distribution&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel)</pre>
<div class="block">Returns the
<a href="BuiltInMetadata.Distribution.html#distribution()"><code>BuiltInMetadata.Distribution.distribution()</code></a>
statistic.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>rel</code> - the relational expression</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>List of sorted column combinations, or
null if not enough information is available to make that determination</dd>
</dl>
</li>
</ul>
<a id="getPopulationSize(org.apache.calcite.rel.RelNode,org.apache.calcite.util.ImmutableBitSet)">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>getPopulationSize</h4>
<pre class="methodSignature">public&nbsp;java.lang.Double&nbsp;getPopulationSize&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel,
<a href="../../util/ImmutableBitSet.html" title="class in org.apache.calcite.util">ImmutableBitSet</a>&nbsp;groupKey)</pre>
<div class="block">Returns the
<a href="BuiltInMetadata.PopulationSize.html#getPopulationSize(org.apache.calcite.util.ImmutableBitSet)"><code>BuiltInMetadata.PopulationSize.getPopulationSize(ImmutableBitSet)</code></a>
statistic.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>rel</code> - the relational expression</dd>
<dd><code>groupKey</code> - column mask representing the subset of columns for which
the row count will be determined</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>distinct row count for the given groupKey, or null if no reliable
estimate can be determined</dd>
</dl>
</li>
</ul>
<a id="getAverageRowSize(org.apache.calcite.rel.RelNode)">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>getAverageRowSize</h4>
<pre class="methodSignature">public&nbsp;java.lang.Double&nbsp;getAverageRowSize&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel)</pre>
<div class="block">Returns the
<a href="BuiltInMetadata.Size.html#averageRowSize()"><code>BuiltInMetadata.Size.averageRowSize()</code></a>
statistic.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>rel</code> - the relational expression</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>average size of a row, in bytes, or null if not known</dd>
</dl>
</li>
</ul>
<a id="getAverageColumnSizes(org.apache.calcite.rel.RelNode)">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>getAverageColumnSizes</h4>
<pre class="methodSignature">public&nbsp;java.util.List&lt;java.lang.Double&gt;&nbsp;getAverageColumnSizes&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel)</pre>
<div class="block">Returns the
<a href="BuiltInMetadata.Size.html#averageColumnSizes()"><code>BuiltInMetadata.Size.averageColumnSizes()</code></a>
statistic.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>rel</code> - the relational expression</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>a list containing, for each column, the average size of a column
value, in bytes. Each value or the entire list may be null if the
metadata is not available</dd>
</dl>
</li>
</ul>
<a id="getAverageColumnSizesNotNull(org.apache.calcite.rel.RelNode)">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>getAverageColumnSizesNotNull</h4>
<pre class="methodSignature">public&nbsp;java.util.List&lt;java.lang.Double&gt;&nbsp;getAverageColumnSizesNotNull&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel)</pre>
<div class="block">As <a href="#getAverageColumnSizes(org.apache.calcite.rel.RelNode)"><code>getAverageColumnSizes(org.apache.calcite.rel.RelNode)</code></a> but
never returns a null list, only ever a list of nulls.</div>
</li>
</ul>
<a id="isPhaseTransition(org.apache.calcite.rel.RelNode)">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>isPhaseTransition</h4>
<pre class="methodSignature">public&nbsp;java.lang.Boolean&nbsp;isPhaseTransition&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel)</pre>
<div class="block">Returns the
<a href="BuiltInMetadata.Parallelism.html#isPhaseTransition()"><code>BuiltInMetadata.Parallelism.isPhaseTransition()</code></a>
statistic.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>rel</code> - the relational expression</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>whether each physical operator implementing this relational
expression belongs to a different process than its inputs, or null if not
known</dd>
</dl>
</li>
</ul>
<a id="splitCount(org.apache.calcite.rel.RelNode)">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>splitCount</h4>
<pre class="methodSignature">public&nbsp;java.lang.Integer&nbsp;splitCount&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel)</pre>
<div class="block">Returns the
<a href="BuiltInMetadata.Parallelism.html#splitCount()"><code>BuiltInMetadata.Parallelism.splitCount()</code></a>
statistic.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>rel</code> - the relational expression</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the number of distinct splits of the data, or null if not known</dd>
</dl>
</li>
</ul>
<a id="memory(org.apache.calcite.rel.RelNode)">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>memory</h4>
<pre class="methodSignature">public&nbsp;java.lang.Double&nbsp;memory&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel)</pre>
<div class="block">Returns the
<a href="BuiltInMetadata.Memory.html#memory()"><code>BuiltInMetadata.Memory.memory()</code></a>
statistic.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>rel</code> - the relational expression</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the expected amount of memory, in bytes, required by a physical
operator implementing this relational expression, across all splits,
or null if not known</dd>
</dl>
</li>
</ul>
<a id="cumulativeMemoryWithinPhase(org.apache.calcite.rel.RelNode)">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>cumulativeMemoryWithinPhase</h4>
<pre class="methodSignature">public&nbsp;java.lang.Double&nbsp;cumulativeMemoryWithinPhase&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel)</pre>
<div class="block">Returns the
<a href="BuiltInMetadata.Memory.html#cumulativeMemoryWithinPhase()"><code>BuiltInMetadata.Memory.cumulativeMemoryWithinPhase()</code></a>
statistic.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>rel</code> - the relational expression</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the cumulative amount of memory, in bytes, required by the
physical operator implementing this relational expression, and all other
operators within the same phase, across all splits, or null if not known</dd>
</dl>
</li>
</ul>
<a id="cumulativeMemoryWithinPhaseSplit(org.apache.calcite.rel.RelNode)">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>cumulativeMemoryWithinPhaseSplit</h4>
<pre class="methodSignature">public&nbsp;java.lang.Double&nbsp;cumulativeMemoryWithinPhaseSplit&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel)</pre>
<div class="block">Returns the
<a href="BuiltInMetadata.Memory.html#cumulativeMemoryWithinPhaseSplit()"><code>BuiltInMetadata.Memory.cumulativeMemoryWithinPhaseSplit()</code></a>
statistic.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>rel</code> - the relational expression</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the expected cumulative amount of memory, in bytes, required by
the physical operator implementing this relational expression, and all
operators within the same phase, within each split, or null if not known</dd>
</dl>
</li>
</ul>
<a id="getDistinctRowCount(org.apache.calcite.rel.RelNode,org.apache.calcite.util.ImmutableBitSet,org.apache.calcite.rex.RexNode)">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>getDistinctRowCount</h4>
<pre class="methodSignature">public&nbsp;java.lang.Double&nbsp;getDistinctRowCount&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel,
<a href="../../util/ImmutableBitSet.html" title="class in org.apache.calcite.util">ImmutableBitSet</a>&nbsp;groupKey,
<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;predicate)</pre>
<div class="block">Returns the
<a href="BuiltInMetadata.DistinctRowCount.html#getDistinctRowCount(org.apache.calcite.util.ImmutableBitSet,org.apache.calcite.rex.RexNode)"><code>BuiltInMetadata.DistinctRowCount.getDistinctRowCount(ImmutableBitSet, RexNode)</code></a>
statistic.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>rel</code> - the relational expression</dd>
<dd><code>groupKey</code> - column mask representing group by columns</dd>
<dd><code>predicate</code> - pre-filtered predicates</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>distinct row count for groupKey, filtered by predicate, or null
if no reliable estimate can be determined</dd>
</dl>
</li>
</ul>
<a id="getPulledUpPredicates(org.apache.calcite.rel.RelNode)">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>getPulledUpPredicates</h4>
<pre class="methodSignature">public&nbsp;<a href="../../plan/RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a>&nbsp;getPulledUpPredicates&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel)</pre>
<div class="block">Returns the
<a href="BuiltInMetadata.Predicates.html#getPredicates()"><code>BuiltInMetadata.Predicates.getPredicates()</code></a>
statistic.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>rel</code> - the relational expression</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Predicates that can be pulled above this RelNode</dd>
</dl>
</li>
</ul>
<a id="getAllPredicates(org.apache.calcite.rel.RelNode)">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>getAllPredicates</h4>
<pre class="methodSignature">public&nbsp;<a href="../../plan/RelOptPredicateList.html" title="class in org.apache.calcite.plan">RelOptPredicateList</a>&nbsp;getAllPredicates&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel)</pre>
<div class="block">Returns the
<a href="BuiltInMetadata.AllPredicates.html#getAllPredicates()"><code>BuiltInMetadata.AllPredicates.getAllPredicates()</code></a>
statistic.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>rel</code> - the relational expression</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>All predicates within and below this RelNode</dd>
</dl>
</li>
</ul>
<a id="isVisibleInExplain(org.apache.calcite.rel.RelNode,org.apache.calcite.sql.SqlExplainLevel)">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>isVisibleInExplain</h4>
<pre class="methodSignature">public&nbsp;boolean&nbsp;isVisibleInExplain&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel,
<a href="../../sql/SqlExplainLevel.html" title="enum in org.apache.calcite.sql">SqlExplainLevel</a>&nbsp;explainLevel)</pre>
<div class="block">Returns the
<a href="BuiltInMetadata.ExplainVisibility.html#isVisibleInExplain(org.apache.calcite.sql.SqlExplainLevel)"><code>BuiltInMetadata.ExplainVisibility.isVisibleInExplain(SqlExplainLevel)</code></a>
statistic.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>rel</code> - the relational expression</dd>
<dd><code>explainLevel</code> - level of detail</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>true for visible, false for invisible; if no metadata is available,
defaults to true</dd>
</dl>
</li>
</ul>
<a id="validatePercentage(java.lang.Double)">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>validatePercentage</h4>
<pre class="methodSignature">private static&nbsp;java.lang.Double&nbsp;validatePercentage&#8203;(java.lang.Double&nbsp;result)</pre>
</li>
</ul>
<a id="getDistribution(org.apache.calcite.rel.RelNode)">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>getDistribution</h4>
<pre class="methodSignature">public&nbsp;<a href="../RelDistribution.html" title="interface in org.apache.calcite.rel">RelDistribution</a>&nbsp;getDistribution&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel)</pre>
<div class="block">Returns the
<a href="BuiltInMetadata.Distribution.html#distribution()"><code>BuiltInMetadata.Distribution.distribution()</code></a>
statistic.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>rel</code> - the relational expression</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>description of how the rows in the relational expression are
physically distributed</dd>
</dl>
</li>
</ul>
<a id="isPercentage(java.lang.Double,boolean)">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>isPercentage</h4>
<pre class="methodSignature">private static&nbsp;boolean&nbsp;isPercentage&#8203;(java.lang.Double&nbsp;result,
boolean&nbsp;fail)</pre>
</li>
</ul>
<a id="isNonNegative(java.lang.Double,boolean)">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>isNonNegative</h4>
<pre class="methodSignature">private static&nbsp;boolean&nbsp;isNonNegative&#8203;(java.lang.Double&nbsp;result,
boolean&nbsp;fail)</pre>
</li>
</ul>
<a id="validateResult(java.lang.Double)">
<!-- -->
</a>
<ul class="blockListLast">
<li class="blockList">
<h4>validateResult</h4>
<pre class="methodSignature">private static&nbsp;java.lang.Double&nbsp;validateResult&#8203;(java.lang.Double&nbsp;result)</pre>
</li>
</ul>
</li>
</ul>
</section>
</li>
</ul>
</div>
</div>
</main>
<!-- ========= END OF CLASS DATA ========= -->
<footer role="contentinfo">
<nav role="navigation">
<!-- ======= START OF BOTTOM NAVBAR ====== -->
<div class="bottomNav"><a id="navbar.bottom">
<!-- -->
</a>
<div class="skipNav"><a href="#skip.navbar.bottom" title="Skip navigation links">Skip navigation links</a></div>
<a id="navbar.bottom.firstrow">
<!-- -->
</a>
<ul class="navList" title="Navigation">
<li><a href="../../../../../index.html">Overview</a></li>
<li><a href="package-summary.html">Package</a></li>
<li class="navBarCell1Rev">Class</li>
<li><a href="class-use/RelMetadataQuery.html">Use</a></li>
<li><a href="package-tree.html">Tree</a></li>
<li><a href="../../../../../deprecated-list.html">Deprecated</a></li>
<li><a href="../../../../../index-all.html">Index</a></li>
<li><a href="../../../../../help-doc.html">Help</a></li>
</ul>
</div>
<div class="subNav">
<ul class="navList" id="allclasses_navbar_bottom">
<li><a href="../../../../../allclasses.html">All&nbsp;Classes</a></li>
</ul>
<div>
<script type="text/javascript"><!--
allClassesLink = document.getElementById("allclasses_navbar_bottom");
if(window==top) {
allClassesLink.style.display = "block";
}
else {
allClassesLink.style.display = "none";
}
//-->
</script>
<noscript>
<div>JavaScript is disabled on your browser.</div>
</noscript>
</div>
<div>
<ul class="subNavList">
<li>Summary:&nbsp;</li>
<li>Nested&nbsp;|&nbsp;</li>
<li><a href="#field.summary">Field</a>&nbsp;|&nbsp;</li>
<li><a href="#constructor.summary">Constr</a>&nbsp;|&nbsp;</li>
<li><a href="#method.summary">Method</a></li>
</ul>
<ul class="subNavList">
<li>Detail:&nbsp;</li>
<li><a href="#field.detail">Field</a>&nbsp;|&nbsp;</li>
<li><a href="#constructor.detail">Constr</a>&nbsp;|&nbsp;</li>
<li><a href="#method.detail">Method</a></li>
</ul>
</div>
<a id="skip.navbar.bottom">
<!-- -->
</a></div>
<!-- ======== END OF BOTTOM NAVBAR ======= -->
</nav>
<p class="legalCopy"><small>Copyright &#169; 2012&#x2013;2019 <a href="https://www.apache.org/">The Apache Software Foundation</a>. All rights reserved.</small></p>
</footer>
</body>
</html>