javadocAggregate/org/apache/calcite/rel/metadata/RelMdUtil.html - calcite-site - Git at Google

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 <div class="header">
 <div class="sub-title"><span class="package-label-in-type">Package</span>&nbsp;<a href="package-summary.html">org.apache.calcite.rel.metadata</a></div>
 <h1 title="Class RelMdUtil" class="title">Class RelMdUtil</h1>
 </div>
 <div class="inheritance" title="Inheritance Tree"><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">java.lang.Object</a>
 <div class="inheritance">org.apache.calcite.rel.metadata.RelMdUtil</div>
 </div>
 <section class="class-description" id="class-description">
 <hr>
 <div class="type-signature"><span class="modifiers">public class </span><span class="element-name type-name-label">RelMdUtil</span>
 <span class="extends-implements">extends <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a></span></div>
 <div class="block">RelMdUtil provides utility methods used by the metadata provider methods.</div>
 </section>
 <section class="summary">
 <ul class="summary-list">
 <!-- =========== FIELD SUMMARY =========== -->
 <li>
 <section class="field-summary" id="field-summary">
 <h2>Field Summary</h2>
 <div class="caption"><span>Fields</span></div>
 <div class="summary-table three-column-summary">
 <div class="table-header col-first">Modifier and Type</div>
 <div class="table-header col-second">Field</div>
 <div class="table-header col-last">Description</div>
 <div class="col-first even-row-color"><code>static final <a href="../../sql/SqlFunction.html" title="class in org.apache.calcite.sql">SqlFunction</a></code></div>
 <div class="col-second even-row-color"><code><a href="#ARTIFICIAL_SELECTIVITY_FUNC" class="member-name-link">ARTIFICIAL_SELECTIVITY_FUNC</a></code></div>
 <div class="col-last even-row-color">&nbsp;</div>
 </div>
 </section>
 </li>
 <!-- ========== METHOD SUMMARY =========== -->
 <li>
 <section class="method-summary" id="method-summary">
 <h2>Method Summary</h2>
 <div id="method-summary-table">
 <div class="table-tabs" role="tablist" aria-orientation="horizontal"><button id="method-summary-table-tab0" role="tab" aria-selected="true" aria-controls="method-summary-table.tabpanel" tabindex="0" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table', 3)" class="active-table-tab">All Methods</button><button id="method-summary-table-tab1" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab1', 3)" class="table-tab">Static Methods</button><button id="method-summary-table-tab4" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab4', 3)" class="table-tab">Concrete Methods</button></div>
 <div id="method-summary-table.tabpanel" role="tabpanel">
 <div class="summary-table three-column-summary" aria-labelledby="method-summary-table-tab0">
 <div class="table-header col-first">Modifier and Type</div>
 <div class="table-header col-second">Method</div>
 <div class="table-header col-last">Description</div>
 <div class="col-first even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static double</code></div>
 <div class="col-second even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#addEpsilon(double)" class="member-name-link">addEpsilon</a><wbr>(double&nbsp;d)</code></div>
 <div class="col-last even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">
 <div class="block">Add an epsilon to the value passed in.</div>
 </div>
 <div class="col-first odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static boolean</code></div>
 <div class="col-second odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#areColumnsDefinitelyUnique(org.apache.calcite.rel.metadata.RelMetadataQuery,org.apache.calcite.rel.RelNode,java.util.List)" class="member-name-link">areColumnsDefinitelyUnique</a><wbr>(<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq,
  <a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel,
  <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a>&lt;<a href="../../rex/RexInputRef.html" title="class in org.apache.calcite.rex">RexInputRef</a>&gt;&nbsp;columnRefs)</code></div>
 <div class="col-last odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">&nbsp;</div>
 <div class="col-first even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static boolean</code></div>
 <div class="col-second even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#areColumnsDefinitelyUnique(org.apache.calcite.rel.metadata.RelMetadataQuery,org.apache.calcite.rel.RelNode,org.apache.calcite.util.ImmutableBitSet)" class="member-name-link">areColumnsDefinitelyUnique</a><wbr>(<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq,
  <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;colMask)</code></div>
 <div class="col-last even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">
 <div class="block">Returns true if the columns represented in a bit mask are definitely
  known to form a unique column set.</div>
 </div>
 <div class="col-first odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static boolean</code></div>
 <div class="col-second odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#areColumnsDefinitelyUniqueWhenNullsFiltered(org.apache.calcite.rel.metadata.RelMetadataQuery,org.apache.calcite.rel.RelNode,java.util.List)" class="member-name-link">areColumnsDefinitelyUniqueWhenNullsFiltered</a><wbr>(<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq,
  <a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel,
  <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a>&lt;<a href="../../rex/RexInputRef.html" title="class in org.apache.calcite.rex">RexInputRef</a>&gt;&nbsp;columnRefs)</code></div>
 <div class="col-last odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">&nbsp;</div>
 <div class="col-first even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static boolean</code></div>
 <div class="col-second even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#areColumnsDefinitelyUniqueWhenNullsFiltered(org.apache.calcite.rel.metadata.RelMetadataQuery,org.apache.calcite.rel.RelNode,org.apache.calcite.util.ImmutableBitSet)" class="member-name-link">areColumnsDefinitelyUniqueWhenNullsFiltered</a><wbr>(<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq,
  <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;colMask)</code></div>
 <div class="col-last even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">
 <div class="block">Returns true if the columns represented in a bit mask are definitely
  known to form a unique column set, when nulls have been filtered from
  the columns.</div>
 </div>
 <div class="col-first odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static @Nullable <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Boolean.html" title="class or interface in java.lang" class="external-link">Boolean</a></code></div>
 <div class="col-second odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#areColumnsUnique(org.apache.calcite.rel.metadata.RelMetadataQuery,org.apache.calcite.rel.RelNode,java.util.List)" class="member-name-link">areColumnsUnique</a><wbr>(<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq,
  <a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel,
  <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a>&lt;<a href="../../rex/RexInputRef.html" title="class in org.apache.calcite.rex">RexInputRef</a>&gt;&nbsp;columnRefs)</code></div>
 <div class="col-last odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">&nbsp;</div>
 <div class="col-first even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static @Nullable <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Boolean.html" title="class or interface in java.lang" class="external-link">Boolean</a></code></div>
 <div class="col-second even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#areColumnsUniqueWhenNullsFiltered(org.apache.calcite.rel.metadata.RelMetadataQuery,org.apache.calcite.rel.RelNode,java.util.List)" class="member-name-link">areColumnsUniqueWhenNullsFiltered</a><wbr>(<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq,
  <a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel,
  <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a>&lt;<a href="../../rex/RexInputRef.html" title="class in org.apache.calcite.rex">RexInputRef</a>&gt;&nbsp;columnRefs)</code></div>
 <div class="col-last even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">&nbsp;</div>
 <div class="col-first odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static double</code></div>
 <div class="col-second odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#capInfinity(java.lang.Double)" class="member-name-link">capInfinity</a><wbr>(<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Double.html" title="class or interface in java.lang" class="external-link">Double</a>&nbsp;d)</code></div>
 <div class="col-last odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">
 <div class="block">Caps a double value at Double.MAX_VALUE if it's currently infinity</div>
 </div>
 <div class="col-first even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static @Nullable <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Double.html" title="class or interface in java.lang" class="external-link">Double</a></code></div>
 <div class="col-second even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#cardOfProjExpr(org.apache.calcite.rel.metadata.RelMetadataQuery,org.apache.calcite.rel.core.Project,org.apache.calcite.rex.RexNode)" class="member-name-link">cardOfProjExpr</a><wbr>(<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq,
  <a href="../core/Project.html" title="class in org.apache.calcite.rel.core">Project</a>&nbsp;rel,
  <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;expr)</code></div>
 <div class="col-last even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">
 <div class="block">Computes the cardinality of a particular expression from the projection
  list.</div>
 </div>
 <div class="col-first odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static boolean</code></div>
 <div class="col-second odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#checkInputForCollationAndLimit(org.apache.calcite.rel.metadata.RelMetadataQuery,org.apache.calcite.rel.RelNode,org.apache.calcite.rel.RelCollation,org.apache.calcite.rex.RexNode,org.apache.calcite.rex.RexNode)" class="member-name-link">checkInputForCollationAndLimit</a><wbr>(<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq,
  <a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;input,
  <a href="../RelCollation.html" title="interface in org.apache.calcite.rel">RelCollation</a>&nbsp;collation,
  @Nullable <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;offset,
  @Nullable <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;fetch)</code></div>
 <div class="col-last odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">
 <div class="block">Returns whether a relational expression is already sorted and has fewer
  rows than the sum of offset and limit.</div>
 </div>
 <div class="col-first even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static boolean</code></div>
 <div class="col-second even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#clearCache(org.apache.calcite.rel.RelNode)" class="member-name-link">clearCache</a><wbr>(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel)</code></div>
 <div class="col-last even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">
 <div class="block">Removes cached metadata values for specified RelNode.</div>
 </div>
 <div class="col-first odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static double</code></div>
 <div class="col-second odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#computeSemiJoinSelectivity(org.apache.calcite.rel.metadata.RelMetadataQuery,org.apache.calcite.rel.RelNode,org.apache.calcite.rel.RelNode,java.util.List,java.util.List)" class="member-name-link">computeSemiJoinSelectivity</a><wbr>(<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq,
  <a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;factRel,
  <a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;dimRel,
  <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a>&lt;<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Integer.html" title="class or interface in java.lang" class="external-link">Integer</a>&gt;&nbsp;factKeyList,
  <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a>&lt;<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Integer.html" title="class or interface in java.lang" class="external-link">Integer</a>&gt;&nbsp;dimKeyList)</code></div>
 <div class="col-last odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">
 <div class="block">Computes the selectivity of a semijoin filter if it is applied on a fact
  table.</div>
 </div>
 <div class="col-first even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static double</code></div>
 <div class="col-second even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#computeSemiJoinSelectivity(org.apache.calcite.rel.metadata.RelMetadataQuery,org.apache.calcite.rel.RelNode,org.apache.calcite.rel.RelNode,org.apache.calcite.rel.core.Join)" class="member-name-link">computeSemiJoinSelectivity</a><wbr>(<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq,
  <a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;factRel,
  <a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;dimRel,
  <a href="../core/Join.html" title="class in org.apache.calcite.rel.core">Join</a>&nbsp;rel)</code></div>
 <div class="col-last even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">
 <div class="block">Computes the selectivity of a semijoin filter if it is applied on a fact
  table.</div>
 </div>
 <div class="col-first odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static double</code></div>
 <div class="col-second odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#estimateFilteredRows(org.apache.calcite.rel.RelNode,org.apache.calcite.rex.RexNode,org.apache.calcite.rel.metadata.RelMetadataQuery)" class="member-name-link">estimateFilteredRows</a><wbr>(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;child,
  @Nullable <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;condition,
  <a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq)</code></div>
 <div class="col-last odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">&nbsp;</div>
 <div class="col-first even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static double</code></div>
 <div class="col-second even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#estimateFilteredRows(org.apache.calcite.rel.RelNode,org.apache.calcite.rex.RexProgram,org.apache.calcite.rel.metadata.RelMetadataQuery)" class="member-name-link">estimateFilteredRows</a><wbr>(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;child,
  <a href="../../rex/RexProgram.html" title="class in org.apache.calcite.rex">RexProgram</a>&nbsp;program,
  <a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq)</code></div>
 <div class="col-last even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">&nbsp;</div>
 <div class="col-first odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static @Nullable <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Double.html" title="class or interface in java.lang" class="external-link">Double</a></code></div>
 <div class="col-second odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#getJoinDistinctRowCount(org.apache.calcite.rel.metadata.RelMetadataQuery,org.apache.calcite.rel.RelNode,org.apache.calcite.rel.core.JoinRelType,org.apache.calcite.util.ImmutableBitSet,org.apache.calcite.rex.RexNode,boolean)" class="member-name-link">getJoinDistinctRowCount</a><wbr>(<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq,
  <a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;joinRel,
  <a href="../core/JoinRelType.html" title="enum in org.apache.calcite.rel.core">JoinRelType</a>&nbsp;joinType,
  <a href="../../util/ImmutableBitSet.html" title="class in org.apache.calcite.util">ImmutableBitSet</a>&nbsp;groupKey,
  @Nullable <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;predicate,
  boolean&nbsp;useMaxNdv)</code></div>
 <div class="col-last odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">
 <div class="block">Computes the number of distinct rows for a set of keys returned from a
  join.</div>
 </div>
 <div class="col-first even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static @Nullable <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Double.html" title="class or interface in java.lang" class="external-link">Double</a></code></div>
 <div class="col-second even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#getJoinPopulationSize(org.apache.calcite.rel.metadata.RelMetadataQuery,org.apache.calcite.rel.RelNode,org.apache.calcite.util.ImmutableBitSet)" class="member-name-link">getJoinPopulationSize</a><wbr>(<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq,
  <a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;join_,
  <a href="../../util/ImmutableBitSet.html" title="class in org.apache.calcite.util">ImmutableBitSet</a>&nbsp;groupKey)</code></div>
 <div class="col-last even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">
 <div class="block">Computes the population size for a set of keys returned from a join.</div>
 </div>
 <div class="col-first odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static @Nullable <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Double.html" title="class or interface in java.lang" class="external-link">Double</a></code></div>
 <div class="col-second odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#getJoinRowCount(org.apache.calcite.rel.metadata.RelMetadataQuery,org.apache.calcite.rel.core.Join,org.apache.calcite.rex.RexNode)" class="member-name-link">getJoinRowCount</a><wbr>(<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq,
  <a href="../core/Join.html" title="class in org.apache.calcite.rel.core">Join</a>&nbsp;join,
  <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;condition)</code></div>
 <div class="col-last odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">
 <div class="block">Returns an estimate of the number of rows returned by a <a href="../core/Join.html" title="class in org.apache.calcite.rel.core"><code>Join</code></a>.</div>
 </div>
 <div class="col-first even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static double</code></div>
 <div class="col-second even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#getMinusRowCount(org.apache.calcite.rel.metadata.RelMetadataQuery,org.apache.calcite.rel.core.Minus)" class="member-name-link">getMinusRowCount</a><wbr>(<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq,
  <a href="../core/Minus.html" title="class in org.apache.calcite.rel.core">Minus</a>&nbsp;minus)</code></div>
 <div class="col-last even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">
 <div class="block">Returns an estimate of the number of rows returned by a <a href="../core/Minus.html" title="class in org.apache.calcite.rel.core"><code>Minus</code></a>.</div>
 </div>
 <div class="col-first odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static double</code></div>
 <div class="col-second odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#getSelectivityValue(org.apache.calcite.rex.RexNode)" class="member-name-link">getSelectivityValue</a><wbr>(<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;artificialSelectivityFuncNode)</code></div>
 <div class="col-last odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">
 <div class="block">Returns the selectivity value stored in a call.</div>
 </div>
 <div class="col-first even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static @Nullable <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Double.html" title="class or interface in java.lang" class="external-link">Double</a></code></div>
 <div class="col-second even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#getSemiJoinDistinctRowCount(org.apache.calcite.rel.core.Join,org.apache.calcite.rel.metadata.RelMetadataQuery,org.apache.calcite.util.ImmutableBitSet,org.apache.calcite.rex.RexNode)" class="member-name-link">getSemiJoinDistinctRowCount</a><wbr>(<a href="../core/Join.html" title="class in org.apache.calcite.rel.core">Join</a>&nbsp;semiJoinRel,
  <a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq,
  <a href="../../util/ImmutableBitSet.html" title="class in org.apache.calcite.util">ImmutableBitSet</a>&nbsp;groupKey,
  @Nullable <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;predicate)</code></div>
 <div class="col-last even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">
 <div class="block">Computes the number of distinct rows for a set of keys returned from a
  semi-join.</div>
 </div>
 <div class="col-first odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static double</code></div>
 <div class="col-second odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#getUnionAllRowCount(org.apache.calcite.rel.metadata.RelMetadataQuery,org.apache.calcite.rel.core.Union)" class="member-name-link">getUnionAllRowCount</a><wbr>(<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq,
  <a href="../core/Union.html" title="class in org.apache.calcite.rel.core">Union</a>&nbsp;rel)</code></div>
 <div class="col-last odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">
 <div class="block">Returns an estimate of the number of rows returned by a <a href="../core/Union.html" title="class in org.apache.calcite.rel.core"><code>Union</code></a>
  (before duplicates are eliminated).</div>
 </div>
 <div class="col-first even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static double</code></div>
 <div class="col-second even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#guessSelectivity(org.apache.calcite.rex.RexNode)" class="member-name-link">guessSelectivity</a><wbr>(@Nullable <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;predicate)</code></div>
 <div class="col-last even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">
 <div class="block">Returns default estimates for selectivities, in the absence of stats.</div>
 </div>
 <div class="col-first odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static double</code></div>
 <div class="col-second odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#guessSelectivity(org.apache.calcite.rex.RexNode,boolean)" class="member-name-link">guessSelectivity</a><wbr>(@Nullable <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;predicate,
  boolean&nbsp;artificialOnly)</code></div>
 <div class="col-last odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">
 <div class="block">Returns default estimates for selectivities, in the absence of stats.</div>
 </div>
 <div class="col-first even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static double</code></div>
 <div class="col-second even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#linear(int,int,int,double,double)" class="member-name-link">linear</a><wbr>(int&nbsp;x,
  int&nbsp;minX,
  int&nbsp;maxX,
  double&nbsp;minY,
  double&nbsp;maxY)</code></div>
 <div class="col-last even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">
 <div class="block">Returns a point on a line.</div>
 </div>
 <div class="col-first odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a></code></div>
 <div class="col-second odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#makeSemiJoinSelectivityRexNode(org.apache.calcite.rel.metadata.RelMetadataQuery,org.apache.calcite.rel.core.Join)" class="member-name-link">makeSemiJoinSelectivityRexNode</a><wbr>(<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq,
  <a href="../core/Join.html" title="class in org.apache.calcite.rel.core">Join</a>&nbsp;rel)</code></div>
 <div class="col-last odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">
 <div class="block">Creates a RexNode that stores a selectivity value corresponding to the
  selectivity of a semijoin.</div>
 </div>
 <div class="col-first even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static @Nullable <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a></code></div>
 <div class="col-second even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#minusPreds(org.apache.calcite.rex.RexBuilder,org.apache.calcite.rex.RexNode,org.apache.calcite.rex.RexNode)" class="member-name-link">minusPreds</a><wbr>(<a href="../../rex/RexBuilder.html" title="class in org.apache.calcite.rex">RexBuilder</a>&nbsp;rexBuilder,
  @Nullable <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;pred1,
  @Nullable <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;pred2)</code></div>
 <div class="col-last even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">
 <div class="block">Takes the difference between two predicates, removing from the first any
  predicates also in the second.</div>
 </div>
 <div class="col-first odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static @PolyNull <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Double.html" title="class or interface in java.lang" class="external-link">Double</a></code></div>
 <div class="col-second odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#numDistinctVals(java.lang.Double,java.lang.Double)" class="member-name-link">numDistinctVals</a><wbr>(@PolyNull <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Double.html" title="class or interface in java.lang" class="external-link">Double</a>&nbsp;domainSize,
  @PolyNull <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Double.html" title="class or interface in java.lang" class="external-link">Double</a>&nbsp;numSelected)</code></div>
 <div class="col-last odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">
 <div class="block">Returns the number of distinct values provided numSelected are selected
  where there are domainSize distinct values.</div>
 </div>
 <div class="col-first even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static void</code></div>
 <div class="col-second even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#setAggChildKeys(org.apache.calcite.util.ImmutableBitSet,org.apache.calcite.rel.core.Aggregate,org.apache.calcite.util.ImmutableBitSet.Builder)" class="member-name-link">setAggChildKeys</a><wbr>(<a href="../../util/ImmutableBitSet.html" title="class in org.apache.calcite.util">ImmutableBitSet</a>&nbsp;groupKey,
  <a href="../core/Aggregate.html" title="class in org.apache.calcite.rel.core">Aggregate</a>&nbsp;aggRel,
  <a href="../../util/ImmutableBitSet.Builder.html" title="class in org.apache.calcite.util">ImmutableBitSet.Builder</a>&nbsp;childKey)</code></div>
 <div class="col-last even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">
 <div class="block">Takes a bitmap representing a set of input references and extracts the
  ones that reference the group by columns in an aggregate.</div>
 </div>
 <div class="col-first odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static void</code></div>
 <div class="col-second odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#setLeftRightBitmaps(org.apache.calcite.util.ImmutableBitSet,org.apache.calcite.util.ImmutableBitSet.Builder,org.apache.calcite.util.ImmutableBitSet.Builder,int)" class="member-name-link">setLeftRightBitmaps</a><wbr>(<a href="../../util/ImmutableBitSet.html" title="class in org.apache.calcite.util">ImmutableBitSet</a>&nbsp;groupKey,
  <a href="../../util/ImmutableBitSet.Builder.html" title="class in org.apache.calcite.util">ImmutableBitSet.Builder</a>&nbsp;leftMask,
  <a href="../../util/ImmutableBitSet.Builder.html" title="class in org.apache.calcite.util">ImmutableBitSet.Builder</a>&nbsp;rightMask,
  int&nbsp;nFieldsOnLeft)</code></div>
 <div class="col-last odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">
 <div class="block">Separates a bit-mask representing a join into masks representing the left
  and right inputs into the join.</div>
 </div>
 <div class="col-first even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static void</code></div>
 <div class="col-second even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#splitCols(java.util.List,org.apache.calcite.util.ImmutableBitSet,org.apache.calcite.util.ImmutableBitSet.Builder,org.apache.calcite.util.ImmutableBitSet.Builder)" class="member-name-link">splitCols</a><wbr>(<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a>&lt;<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;projExprs,
  <a href="../../util/ImmutableBitSet.html" title="class in org.apache.calcite.util">ImmutableBitSet</a>&nbsp;groupKey,
  <a href="../../util/ImmutableBitSet.Builder.html" title="class in org.apache.calcite.util">ImmutableBitSet.Builder</a>&nbsp;baseCols,
  <a href="../../util/ImmutableBitSet.Builder.html" title="class in org.apache.calcite.util">ImmutableBitSet.Builder</a>&nbsp;projCols)</code></div>
 <div class="col-last even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">
 <div class="block">Forms two bitmaps by splitting the columns in a bitmap according to
  whether or not the column references the child input or is an expression.</div>
 </div>
 <div class="col-first odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static @Nullable <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a></code></div>
 <div class="col-second odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#unionPreds(org.apache.calcite.rex.RexBuilder,org.apache.calcite.rex.RexNode,org.apache.calcite.rex.RexNode)" class="member-name-link">unionPreds</a><wbr>(<a href="../../rex/RexBuilder.html" title="class in org.apache.calcite.rex">RexBuilder</a>&nbsp;rexBuilder,
  @Nullable <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;pred1,
  @Nullable <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;pred2)</code></div>
 <div class="col-last odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">
 <div class="block">AND's two predicates together, either of which may be null, removing
  redundant filters.</div>
 </div>
 <div class="col-first even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static @PolyNull <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Double.html" title="class or interface in java.lang" class="external-link">Double</a></code></div>
 <div class="col-second even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#validatePercentage(java.lang.Double)" class="member-name-link">validatePercentage</a><wbr>(@PolyNull <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Double.html" title="class or interface in java.lang" class="external-link">Double</a>&nbsp;result)</code></div>
 <div class="col-last even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">
 <div class="block">Validates whether a value represents a percentage number
  (that is, a value in the interval [0.0, 1.0]) and returns the value.</div>
 </div>
 <div class="col-first odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static @PolyNull <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Double.html" title="class or interface in java.lang" class="external-link">Double</a></code></div>
 <div class="col-second odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#validateResult(java.lang.Double)" class="member-name-link">validateResult</a><wbr>(@PolyNull <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Double.html" title="class or interface in java.lang" class="external-link">Double</a>&nbsp;result)</code></div>
 <div class="col-last odd-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">
 <div class="block">Validates the <code>result</code> is valid.</div>
 </div>
 </div>
 </div>
 </div>
 <div class="inherited-list">
 <h3 id="methods-inherited-from-class-java.lang.Object">Methods inherited from class&nbsp;java.lang.<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a></h3>
 <code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#clone()" title="class or interface in java.lang" class="external-link">clone</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#equals(java.lang.Object)" title="class or interface in java.lang" class="external-link">equals</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#finalize()" title="class or interface in java.lang" class="external-link">finalize</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#getClass()" title="class or interface in java.lang" class="external-link">getClass</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#hashCode()" title="class or interface in java.lang" class="external-link">hashCode</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#notify()" title="class or interface in java.lang" class="external-link">notify</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#notifyAll()" title="class or interface in java.lang" class="external-link">notifyAll</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#toString()" title="class or interface in java.lang" class="external-link">toString</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#wait()" title="class or interface in java.lang" class="external-link">wait</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#wait(long)" title="class or interface in java.lang" class="external-link">wait</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#wait(long,int)" title="class or interface in java.lang" class="external-link">wait</a></code></div>
 </section>
 </li>
 </ul>
 </section>
 <section class="details">
 <ul class="details-list">
 <!-- ============ FIELD DETAIL =========== -->
 <li>
 <section class="field-details" id="field-detail">
 <h2>Field Details</h2>
 <ul class="member-list">
 <li>
 <section class="detail" id="ARTIFICIAL_SELECTIVITY_FUNC">
 <h3>ARTIFICIAL_SELECTIVITY_FUNC</h3>
 <div class="member-signature"><span class="modifiers">public static final</span>&nbsp;<span class="return-type"><a href="../../sql/SqlFunction.html" title="class in org.apache.calcite.sql">SqlFunction</a></span>&nbsp;<span class="element-name">ARTIFICIAL_SELECTIVITY_FUNC</span></div>
 </section>
 </li>
 </ul>
 </section>
 </li>
 <!-- ============ METHOD DETAIL ========== -->
 <li>
 <section class="method-details" id="method-detail">
 <h2>Method Details</h2>
 <ul class="member-list">
 <li>
 <section class="detail" id="makeSemiJoinSelectivityRexNode(org.apache.calcite.rel.metadata.RelMetadataQuery,org.apache.calcite.rel.core.Join)">
 <h3>makeSemiJoinSelectivityRexNode</h3>
 <div class="member-signature"><span class="modifiers">public static</span>&nbsp;<span class="return-type"><a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a></span>&nbsp;<span class="element-name">makeSemiJoinSelectivityRexNode</span><wbr><span class="parameters">(<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq,
  <a href="../core/Join.html" title="class in org.apache.calcite.rel.core">Join</a>&nbsp;rel)</span></div>
 <div class="block">Creates a RexNode that stores a selectivity value corresponding to the
  selectivity of a semijoin. This can be added to a filter to simulate the
  effect of the semijoin during costing, but should never appear in a real
  plan since it has no physical implementation.</div>
 <dl class="notes">
 <dt>Parameters:</dt>
 <dd><code>rel</code> - the semijoin of interest</dd>
 <dt>Returns:</dt>
 <dd>constructed rexnode</dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="getSelectivityValue(org.apache.calcite.rex.RexNode)">
 <h3>getSelectivityValue</h3>
 <div class="member-signature"><span class="modifiers">public static</span>&nbsp;<span class="return-type">double</span>&nbsp;<span class="element-name">getSelectivityValue</span><wbr><span class="parameters">(<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;artificialSelectivityFuncNode)</span></div>
 <div class="block">Returns the selectivity value stored in a call.</div>
 <dl class="notes">
 <dt>Parameters:</dt>
 <dd><code>artificialSelectivityFuncNode</code> - Call containing the selectivity value</dd>
 <dt>Returns:</dt>
 <dd>selectivity value</dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="computeSemiJoinSelectivity(org.apache.calcite.rel.metadata.RelMetadataQuery,org.apache.calcite.rel.RelNode,org.apache.calcite.rel.RelNode,org.apache.calcite.rel.core.Join)">
 <h3>computeSemiJoinSelectivity</h3>
 <div class="member-signature"><span class="modifiers">public static</span>&nbsp;<span class="return-type">double</span>&nbsp;<span class="element-name">computeSemiJoinSelectivity</span><wbr><span class="parameters">(<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq,
  <a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;factRel,
  <a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;dimRel,
  <a href="../core/Join.html" title="class in org.apache.calcite.rel.core">Join</a>&nbsp;rel)</span></div>
 <div class="block">Computes the selectivity of a semijoin filter if it is applied on a fact
  table. The computation is based on the selectivity of the dimension
  table/columns and the number of distinct values in the fact table
  columns.</div>
 <dl class="notes">
 <dt>Parameters:</dt>
 <dd><code>factRel</code> - fact table participating in the semijoin</dd>
 <dd><code>dimRel</code> - dimension table participating in the semijoin</dd>
 <dd><code>rel</code> - semijoin rel</dd>
 <dt>Returns:</dt>
 <dd>calculated selectivity</dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="computeSemiJoinSelectivity(org.apache.calcite.rel.metadata.RelMetadataQuery,org.apache.calcite.rel.RelNode,org.apache.calcite.rel.RelNode,java.util.List,java.util.List)">
 <h3>computeSemiJoinSelectivity</h3>
 <div class="member-signature"><span class="modifiers">public static</span>&nbsp;<span class="return-type">double</span>&nbsp;<span class="element-name">computeSemiJoinSelectivity</span><wbr><span class="parameters">(<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq,
  <a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;factRel,
  <a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;dimRel,
  <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a>&lt;<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Integer.html" title="class or interface in java.lang" class="external-link">Integer</a>&gt;&nbsp;factKeyList,
  <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a>&lt;<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Integer.html" title="class or interface in java.lang" class="external-link">Integer</a>&gt;&nbsp;dimKeyList)</span></div>
 <div class="block">Computes the selectivity of a semijoin filter if it is applied on a fact
  table. The computation is based on the selectivity of the dimension
  table/columns and the number of distinct values in the fact table
  columns.</div>
 <dl class="notes">
 <dt>Parameters:</dt>
 <dd><code>factRel</code> - fact table participating in the semijoin</dd>
 <dd><code>dimRel</code> - dimension table participating in the semijoin</dd>
 <dd><code>factKeyList</code> - LHS keys used in the filter</dd>
 <dd><code>dimKeyList</code> - RHS keys used in the filter</dd>
 <dt>Returns:</dt>
 <dd>calculated selectivity</dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="areColumnsDefinitelyUnique(org.apache.calcite.rel.metadata.RelMetadataQuery,org.apache.calcite.rel.RelNode,org.apache.calcite.util.ImmutableBitSet)">
 <h3>areColumnsDefinitelyUnique</h3>
 <div class="member-signature"><span class="modifiers">public static</span>&nbsp;<span class="return-type">boolean</span>&nbsp;<span class="element-name">areColumnsDefinitelyUnique</span><wbr><span class="parameters">(<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq,
  <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;colMask)</span></div>
 <div class="block">Returns true if the columns represented in a bit mask are definitely
  known to form a unique column set.</div>
 <dl class="notes">
 <dt>Parameters:</dt>
 <dd><code>rel</code> - the relational expression that the column mask corresponds
                 to</dd>
 <dd><code>colMask</code> - bit mask containing columns that will be tested for
                 uniqueness</dd>
 <dt>Returns:</dt>
 <dd>true if bit mask represents a unique column set; false if not (or
  if no metadata is available)</dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="areColumnsUnique(org.apache.calcite.rel.metadata.RelMetadataQuery,org.apache.calcite.rel.RelNode,java.util.List)">
 <h3>areColumnsUnique</h3>
 <div class="member-signature"><span class="modifiers">public static</span>&nbsp;<span class="return-type">@Nullable <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Boolean.html" title="class or interface in java.lang" class="external-link">Boolean</a></span>&nbsp;<span class="element-name">areColumnsUnique</span><wbr><span class="parameters">(<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq,
  <a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel,
  <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a>&lt;<a href="../../rex/RexInputRef.html" title="class in org.apache.calcite.rex">RexInputRef</a>&gt;&nbsp;columnRefs)</span></div>
 </section>
 </li>
 <li>
 <section class="detail" id="areColumnsDefinitelyUnique(org.apache.calcite.rel.metadata.RelMetadataQuery,org.apache.calcite.rel.RelNode,java.util.List)">
 <h3>areColumnsDefinitelyUnique</h3>
 <div class="member-signature"><span class="modifiers">public static</span>&nbsp;<span class="return-type">boolean</span>&nbsp;<span class="element-name">areColumnsDefinitelyUnique</span><wbr><span class="parameters">(<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq,
  <a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel,
  <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a>&lt;<a href="../../rex/RexInputRef.html" title="class in org.apache.calcite.rex">RexInputRef</a>&gt;&nbsp;columnRefs)</span></div>
 </section>
 </li>
 <li>
 <section class="detail" id="areColumnsDefinitelyUniqueWhenNullsFiltered(org.apache.calcite.rel.metadata.RelMetadataQuery,org.apache.calcite.rel.RelNode,org.apache.calcite.util.ImmutableBitSet)">
 <h3>areColumnsDefinitelyUniqueWhenNullsFiltered</h3>
 <div class="member-signature"><span class="modifiers">public static</span>&nbsp;<span class="return-type">boolean</span>&nbsp;<span class="element-name">areColumnsDefinitelyUniqueWhenNullsFiltered</span><wbr><span class="parameters">(<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq,
  <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;colMask)</span></div>
 <div class="block">Returns true if the columns represented in a bit mask are definitely
  known to form a unique column set, when nulls have been filtered from
  the columns.</div>
 <dl class="notes">
 <dt>Parameters:</dt>
 <dd><code>rel</code> - the relational expression that the column mask corresponds
                 to</dd>
 <dd><code>colMask</code> - bit mask containing columns that will be tested for
                 uniqueness</dd>
 <dt>Returns:</dt>
 <dd>true if bit mask represents a unique column set; false if not (or
  if no metadata is available)</dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="areColumnsUniqueWhenNullsFiltered(org.apache.calcite.rel.metadata.RelMetadataQuery,org.apache.calcite.rel.RelNode,java.util.List)">
 <h3>areColumnsUniqueWhenNullsFiltered</h3>
 <div class="member-signature"><span class="modifiers">public static</span>&nbsp;<span class="return-type">@Nullable <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Boolean.html" title="class or interface in java.lang" class="external-link">Boolean</a></span>&nbsp;<span class="element-name">areColumnsUniqueWhenNullsFiltered</span><wbr><span class="parameters">(<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq,
  <a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel,
  <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a>&lt;<a href="../../rex/RexInputRef.html" title="class in org.apache.calcite.rex">RexInputRef</a>&gt;&nbsp;columnRefs)</span></div>
 </section>
 </li>
 <li>
 <section class="detail" id="areColumnsDefinitelyUniqueWhenNullsFiltered(org.apache.calcite.rel.metadata.RelMetadataQuery,org.apache.calcite.rel.RelNode,java.util.List)">
 <h3>areColumnsDefinitelyUniqueWhenNullsFiltered</h3>
 <div class="member-signature"><span class="modifiers">public static</span>&nbsp;<span class="return-type">boolean</span>&nbsp;<span class="element-name">areColumnsDefinitelyUniqueWhenNullsFiltered</span><wbr><span class="parameters">(<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq,
  <a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel,
  <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a>&lt;<a href="../../rex/RexInputRef.html" title="class in org.apache.calcite.rex">RexInputRef</a>&gt;&nbsp;columnRefs)</span></div>
 </section>
 </li>
 <li>
 <section class="detail" id="setLeftRightBitmaps(org.apache.calcite.util.ImmutableBitSet,org.apache.calcite.util.ImmutableBitSet.Builder,org.apache.calcite.util.ImmutableBitSet.Builder,int)">
 <h3>setLeftRightBitmaps</h3>
 <div class="member-signature"><span class="modifiers">public static</span>&nbsp;<span class="return-type">void</span>&nbsp;<span class="element-name">setLeftRightBitmaps</span><wbr><span class="parameters">(<a href="../../util/ImmutableBitSet.html" title="class in org.apache.calcite.util">ImmutableBitSet</a>&nbsp;groupKey,
  <a href="../../util/ImmutableBitSet.Builder.html" title="class in org.apache.calcite.util">ImmutableBitSet.Builder</a>&nbsp;leftMask,
  <a href="../../util/ImmutableBitSet.Builder.html" title="class in org.apache.calcite.util">ImmutableBitSet.Builder</a>&nbsp;rightMask,
  int&nbsp;nFieldsOnLeft)</span></div>
 <div class="block">Separates a bit-mask representing a join into masks representing the left
  and right inputs into the join.</div>
 <dl class="notes">
 <dt>Parameters:</dt>
 <dd><code>groupKey</code> - original bit-mask</dd>
 <dd><code>leftMask</code> - left bit-mask to be set</dd>
 <dd><code>rightMask</code> - right bit-mask to be set</dd>
 <dd><code>nFieldsOnLeft</code> - number of fields in the left input</dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="numDistinctVals(java.lang.Double,java.lang.Double)">
 <h3>numDistinctVals</h3>
 <div class="member-signature"><span class="modifiers">public static</span>&nbsp;<span class="return-type">@PolyNull <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Double.html" title="class or interface in java.lang" class="external-link">Double</a></span>&nbsp;<span class="element-name">numDistinctVals</span><wbr><span class="parameters">(@PolyNull <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Double.html" title="class or interface in java.lang" class="external-link">Double</a>&nbsp;domainSize,
  @PolyNull <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Double.html" title="class or interface in java.lang" class="external-link">Double</a>&nbsp;numSelected)</span></div>
 <div class="block">Returns the number of distinct values provided numSelected are selected
  where there are domainSize distinct values.

  <p>Note that in the case where domainSize == numSelected, it's not true
  that the return value should be domainSize. If you pick 100 random values
  between 1 and 100, you'll most likely end up with fewer than 100 distinct
  values, because you'll pick some values more than once.

  <p>The implementation is an unbiased estimation of the number of distinct
  values by performing a number of selections (with replacement) from a
  universe set.</div>
 <dl class="notes">
 <dt>Parameters:</dt>
 <dd><code>domainSize</code> - Size of the universe set</dd>
 <dd><code>numSelected</code> - The number of selections</dd>
 <dt>Returns:</dt>
 <dd>the expected number of distinct values, or null if either argument
  is null</dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="capInfinity(java.lang.Double)">
 <h3>capInfinity</h3>
 <div class="member-signature"><span class="modifiers">public static</span>&nbsp;<span class="return-type">double</span>&nbsp;<span class="element-name">capInfinity</span><wbr><span class="parameters">(<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Double.html" title="class or interface in java.lang" class="external-link">Double</a>&nbsp;d)</span></div>
 <div class="block">Caps a double value at Double.MAX_VALUE if it's currently infinity</div>
 <dl class="notes">
 <dt>Parameters:</dt>
 <dd><code>d</code> - the Double object</dd>
 <dt>Returns:</dt>
 <dd>the double value if it's not infinity; else Double.MAX_VALUE</dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="guessSelectivity(org.apache.calcite.rex.RexNode)">
 <h3>guessSelectivity</h3>
 <div class="member-signature"><span class="modifiers">public static</span>&nbsp;<span class="return-type">double</span>&nbsp;<span class="element-name">guessSelectivity</span><wbr><span class="parameters">(@Nullable <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;predicate)</span></div>
 <div class="block">Returns default estimates for selectivities, in the absence of stats.</div>
 <dl class="notes">
 <dt>Parameters:</dt>
 <dd><code>predicate</code> - predicate for which selectivity will be computed; null
                   means true, so gives selectity of 1.0</dd>
 <dt>Returns:</dt>
 <dd>estimated selectivity</dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="guessSelectivity(org.apache.calcite.rex.RexNode,boolean)">
 <h3>guessSelectivity</h3>
 <div class="member-signature"><span class="modifiers">public static</span>&nbsp;<span class="return-type">double</span>&nbsp;<span class="element-name">guessSelectivity</span><wbr><span class="parameters">(@Nullable <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;predicate,
  boolean&nbsp;artificialOnly)</span></div>
 <div class="block">Returns default estimates for selectivities, in the absence of stats.</div>
 <dl class="notes">
 <dt>Parameters:</dt>
 <dd><code>predicate</code> - predicate for which selectivity will be computed;
                        null means true, so gives selectity of 1.0</dd>
 <dd><code>artificialOnly</code> - return only the selectivity contribution from
                        artificial nodes</dd>
 <dt>Returns:</dt>
 <dd>estimated selectivity</dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="unionPreds(org.apache.calcite.rex.RexBuilder,org.apache.calcite.rex.RexNode,org.apache.calcite.rex.RexNode)">
 <h3>unionPreds</h3>
 <div class="member-signature"><span class="modifiers">public static</span>&nbsp;<span class="return-type">@Nullable <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a></span>&nbsp;<span class="element-name">unionPreds</span><wbr><span class="parameters">(<a href="../../rex/RexBuilder.html" title="class in org.apache.calcite.rex">RexBuilder</a>&nbsp;rexBuilder,
  @Nullable <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;pred1,
  @Nullable <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;pred2)</span></div>
 <div class="block">AND's two predicates together, either of which may be null, removing
  redundant filters.</div>
 <dl class="notes">
 <dt>Parameters:</dt>
 <dd><code>rexBuilder</code> - rexBuilder used to construct AND'd RexNode</dd>
 <dd><code>pred1</code> - first predicate</dd>
 <dd><code>pred2</code> - second predicate</dd>
 <dt>Returns:</dt>
 <dd>AND'd predicate or individual predicates if one is null</dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="minusPreds(org.apache.calcite.rex.RexBuilder,org.apache.calcite.rex.RexNode,org.apache.calcite.rex.RexNode)">
 <h3>minusPreds</h3>
 <div class="member-signature"><span class="modifiers">public static</span>&nbsp;<span class="return-type">@Nullable <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a></span>&nbsp;<span class="element-name">minusPreds</span><wbr><span class="parameters">(<a href="../../rex/RexBuilder.html" title="class in org.apache.calcite.rex">RexBuilder</a>&nbsp;rexBuilder,
  @Nullable <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;pred1,
  @Nullable <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;pred2)</span></div>
 <div class="block">Takes the difference between two predicates, removing from the first any
  predicates also in the second.</div>
 <dl class="notes">
 <dt>Parameters:</dt>
 <dd><code>rexBuilder</code> - rexBuilder used to construct AND'd RexNode</dd>
 <dd><code>pred1</code> - first predicate</dd>
 <dd><code>pred2</code> - second predicate</dd>
 <dt>Returns:</dt>
 <dd>MINUS'd predicate list</dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="setAggChildKeys(org.apache.calcite.util.ImmutableBitSet,org.apache.calcite.rel.core.Aggregate,org.apache.calcite.util.ImmutableBitSet.Builder)">
 <h3>setAggChildKeys</h3>
 <div class="member-signature"><span class="modifiers">public static</span>&nbsp;<span class="return-type">void</span>&nbsp;<span class="element-name">setAggChildKeys</span><wbr><span class="parameters">(<a href="../../util/ImmutableBitSet.html" title="class in org.apache.calcite.util">ImmutableBitSet</a>&nbsp;groupKey,
  <a href="../core/Aggregate.html" title="class in org.apache.calcite.rel.core">Aggregate</a>&nbsp;aggRel,
  <a href="../../util/ImmutableBitSet.Builder.html" title="class in org.apache.calcite.util">ImmutableBitSet.Builder</a>&nbsp;childKey)</span></div>
 <div class="block">Takes a bitmap representing a set of input references and extracts the
  ones that reference the group by columns in an aggregate.</div>
 <dl class="notes">
 <dt>Parameters:</dt>
 <dd><code>groupKey</code> - the original bitmap</dd>
 <dd><code>aggRel</code> - the aggregate</dd>
 <dd><code>childKey</code> - sets bits from groupKey corresponding to group by columns</dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="splitCols(java.util.List,org.apache.calcite.util.ImmutableBitSet,org.apache.calcite.util.ImmutableBitSet.Builder,org.apache.calcite.util.ImmutableBitSet.Builder)">
 <h3>splitCols</h3>
 <div class="member-signature"><span class="modifiers">public static</span>&nbsp;<span class="return-type">void</span>&nbsp;<span class="element-name">splitCols</span><wbr><span class="parameters">(<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a>&lt;<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;projExprs,
  <a href="../../util/ImmutableBitSet.html" title="class in org.apache.calcite.util">ImmutableBitSet</a>&nbsp;groupKey,
  <a href="../../util/ImmutableBitSet.Builder.html" title="class in org.apache.calcite.util">ImmutableBitSet.Builder</a>&nbsp;baseCols,
  <a href="../../util/ImmutableBitSet.Builder.html" title="class in org.apache.calcite.util">ImmutableBitSet.Builder</a>&nbsp;projCols)</span></div>
 <div class="block">Forms two bitmaps by splitting the columns in a bitmap according to
  whether or not the column references the child input or is an expression.</div>
 <dl class="notes">
 <dt>Parameters:</dt>
 <dd><code>projExprs</code> - Project expressions</dd>
 <dd><code>groupKey</code> - Bitmap whose columns will be split</dd>
 <dd><code>baseCols</code> - Bitmap representing columns from the child input</dd>
 <dd><code>projCols</code> - Bitmap representing non-child columns</dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="cardOfProjExpr(org.apache.calcite.rel.metadata.RelMetadataQuery,org.apache.calcite.rel.core.Project,org.apache.calcite.rex.RexNode)">
 <h3>cardOfProjExpr</h3>
 <div class="member-signature"><span class="modifiers">public static</span>&nbsp;<span class="return-type">@Nullable <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Double.html" title="class or interface in java.lang" class="external-link">Double</a></span>&nbsp;<span class="element-name">cardOfProjExpr</span><wbr><span class="parameters">(<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq,
  <a href="../core/Project.html" title="class in org.apache.calcite.rel.core">Project</a>&nbsp;rel,
  <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;expr)</span></div>
 <div class="block">Computes the cardinality of a particular expression from the projection
  list.</div>
 <dl class="notes">
 <dt>Parameters:</dt>
 <dd><code>rel</code> - RelNode corresponding to the project</dd>
 <dd><code>expr</code> - projection expression</dd>
 <dt>Returns:</dt>
 <dd>cardinality</dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="getJoinPopulationSize(org.apache.calcite.rel.metadata.RelMetadataQuery,org.apache.calcite.rel.RelNode,org.apache.calcite.util.ImmutableBitSet)">
 <h3>getJoinPopulationSize</h3>
 <div class="member-signature"><span class="modifiers">public static</span>&nbsp;<span class="return-type">@Nullable <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Double.html" title="class or interface in java.lang" class="external-link">Double</a></span>&nbsp;<span class="element-name">getJoinPopulationSize</span><wbr><span class="parameters">(<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq,
  <a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;join_,
  <a href="../../util/ImmutableBitSet.html" title="class in org.apache.calcite.util">ImmutableBitSet</a>&nbsp;groupKey)</span></div>
 <div class="block">Computes the population size for a set of keys returned from a join.</div>
 <dl class="notes">
 <dt>Parameters:</dt>
 <dd><code>join_</code> - Join relational operator</dd>
 <dd><code>groupKey</code> - Keys to compute the population for</dd>
 <dt>Returns:</dt>
 <dd>computed population size</dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="addEpsilon(double)">
 <h3>addEpsilon</h3>
 <div class="member-signature"><span class="modifiers">public static</span>&nbsp;<span class="return-type">double</span>&nbsp;<span class="element-name">addEpsilon</span><wbr><span class="parameters">(double&nbsp;d)</span></div>
 <div class="block">Add an epsilon to the value passed in.</div>
 </section>
 </li>
 <li>
 <section class="detail" id="getSemiJoinDistinctRowCount(org.apache.calcite.rel.core.Join,org.apache.calcite.rel.metadata.RelMetadataQuery,org.apache.calcite.util.ImmutableBitSet,org.apache.calcite.rex.RexNode)">
 <h3>getSemiJoinDistinctRowCount</h3>
 <div class="member-signature"><span class="modifiers">public static</span>&nbsp;<span class="return-type">@Nullable <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Double.html" title="class or interface in java.lang" class="external-link">Double</a></span>&nbsp;<span class="element-name">getSemiJoinDistinctRowCount</span><wbr><span class="parameters">(<a href="../core/Join.html" title="class in org.apache.calcite.rel.core">Join</a>&nbsp;semiJoinRel,
  <a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq,
  <a href="../../util/ImmutableBitSet.html" title="class in org.apache.calcite.util">ImmutableBitSet</a>&nbsp;groupKey,
  @Nullable <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;predicate)</span></div>
 <div class="block">Computes the number of distinct rows for a set of keys returned from a
  semi-join.</div>
 <dl class="notes">
 <dt>Parameters:</dt>
 <dd><code>semiJoinRel</code> - RelNode representing the semi-join</dd>
 <dd><code>mq</code> - metadata query</dd>
 <dd><code>groupKey</code> - keys that the distinct row count will be computed for</dd>
 <dd><code>predicate</code> - join predicate</dd>
 <dt>Returns:</dt>
 <dd>number of distinct rows</dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="getJoinDistinctRowCount(org.apache.calcite.rel.metadata.RelMetadataQuery,org.apache.calcite.rel.RelNode,org.apache.calcite.rel.core.JoinRelType,org.apache.calcite.util.ImmutableBitSet,org.apache.calcite.rex.RexNode,boolean)">
 <h3>getJoinDistinctRowCount</h3>
 <div class="member-signature"><span class="modifiers">public static</span>&nbsp;<span class="return-type">@Nullable <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Double.html" title="class or interface in java.lang" class="external-link">Double</a></span>&nbsp;<span class="element-name">getJoinDistinctRowCount</span><wbr><span class="parameters">(<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq,
  <a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;joinRel,
  <a href="../core/JoinRelType.html" title="enum in org.apache.calcite.rel.core">JoinRelType</a>&nbsp;joinType,
  <a href="../../util/ImmutableBitSet.html" title="class in org.apache.calcite.util">ImmutableBitSet</a>&nbsp;groupKey,
  @Nullable <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;predicate,
  boolean&nbsp;useMaxNdv)</span></div>
 <div class="block">Computes the number of distinct rows for a set of keys returned from a
  join. Also known as NDV (number of distinct values).</div>
 <dl class="notes">
 <dt>Parameters:</dt>
 <dd><code>joinRel</code> - RelNode representing the join</dd>
 <dd><code>joinType</code> - type of join</dd>
 <dd><code>groupKey</code> - keys that the distinct row count will be computed for</dd>
 <dd><code>predicate</code> - join predicate</dd>
 <dd><code>useMaxNdv</code> - If true use formula <code>max(left NDV, right NDV)</code>,
                   otherwise use <code>left NDV * right NDV</code>.</dd>
 <dt>Returns:</dt>
 <dd>number of distinct rows</dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="getUnionAllRowCount(org.apache.calcite.rel.metadata.RelMetadataQuery,org.apache.calcite.rel.core.Union)">
 <h3>getUnionAllRowCount</h3>
 <div class="member-signature"><span class="modifiers">public static</span>&nbsp;<span class="return-type">double</span>&nbsp;<span class="element-name">getUnionAllRowCount</span><wbr><span class="parameters">(<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq,
  <a href="../core/Union.html" title="class in org.apache.calcite.rel.core">Union</a>&nbsp;rel)</span></div>
 <div class="block">Returns an estimate of the number of rows returned by a <a href="../core/Union.html" title="class in org.apache.calcite.rel.core"><code>Union</code></a>
  (before duplicates are eliminated).</div>
 </section>
 </li>
 <li>
 <section class="detail" id="getMinusRowCount(org.apache.calcite.rel.metadata.RelMetadataQuery,org.apache.calcite.rel.core.Minus)">
 <h3>getMinusRowCount</h3>
 <div class="member-signature"><span class="modifiers">public static</span>&nbsp;<span class="return-type">double</span>&nbsp;<span class="element-name">getMinusRowCount</span><wbr><span class="parameters">(<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq,
  <a href="../core/Minus.html" title="class in org.apache.calcite.rel.core">Minus</a>&nbsp;minus)</span></div>
 <div class="block">Returns an estimate of the number of rows returned by a <a href="../core/Minus.html" title="class in org.apache.calcite.rel.core"><code>Minus</code></a>.</div>
 </section>
 </li>
 <li>
 <section class="detail" id="getJoinRowCount(org.apache.calcite.rel.metadata.RelMetadataQuery,org.apache.calcite.rel.core.Join,org.apache.calcite.rex.RexNode)">
 <h3>getJoinRowCount</h3>
 <div class="member-signature"><span class="modifiers">public static</span>&nbsp;<span class="return-type">@Nullable <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Double.html" title="class or interface in java.lang" class="external-link">Double</a></span>&nbsp;<span class="element-name">getJoinRowCount</span><wbr><span class="parameters">(<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq,
  <a href="../core/Join.html" title="class in org.apache.calcite.rel.core">Join</a>&nbsp;join,
  <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;condition)</span></div>
 <div class="block">Returns an estimate of the number of rows returned by a <a href="../core/Join.html" title="class in org.apache.calcite.rel.core"><code>Join</code></a>.</div>
 </section>
 </li>
 <li>
 <section class="detail" id="estimateFilteredRows(org.apache.calcite.rel.RelNode,org.apache.calcite.rex.RexProgram,org.apache.calcite.rel.metadata.RelMetadataQuery)">
 <h3>estimateFilteredRows</h3>
 <div class="member-signature"><span class="modifiers">public static</span>&nbsp;<span class="return-type">double</span>&nbsp;<span class="element-name">estimateFilteredRows</span><wbr><span class="parameters">(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;child,
  <a href="../../rex/RexProgram.html" title="class in org.apache.calcite.rex">RexProgram</a>&nbsp;program,
  <a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq)</span></div>
 </section>
 </li>
 <li>
 <section class="detail" id="estimateFilteredRows(org.apache.calcite.rel.RelNode,org.apache.calcite.rex.RexNode,org.apache.calcite.rel.metadata.RelMetadataQuery)">
 <h3>estimateFilteredRows</h3>
 <div class="member-signature"><span class="modifiers">public static</span>&nbsp;<span class="return-type">double</span>&nbsp;<span class="element-name">estimateFilteredRows</span><wbr><span class="parameters">(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;child,
  @Nullable <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;condition,
  <a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq)</span></div>
 </section>
 </li>
 <li>
 <section class="detail" id="linear(int,int,int,double,double)">
 <h3>linear</h3>
 <div class="member-signature"><span class="modifiers">public static</span>&nbsp;<span class="return-type">double</span>&nbsp;<span class="element-name">linear</span><wbr><span class="parameters">(int&nbsp;x,
  int&nbsp;minX,
  int&nbsp;maxX,
  double&nbsp;minY,
  double&nbsp;maxY)</span></div>
 <div class="block">Returns a point on a line.

  <p>The result is always a value between <code>minY</code> and <code>maxY</code>,
  even if <code>x</code> is not between <code>minX</code> and <code>maxX</code>.

  <p>Examples:<ul>
    <li><code>linear(0, 0, 10, 100, 200</code>} returns 100 because 0 is minX
    <li><code>linear(5, 0, 10, 100, 200</code>} returns 150 because 5 is
    mid-way between minX and maxX
    <li><code>linear(5, 0, 10, 100, 200</code>} returns 160
    <li><code>linear(10, 0, 10, 100, 200</code>} returns 200 because 10 is maxX
    <li><code>linear(-2, 0, 10, 100, 200</code>} returns 100 because -2 is
    less than minX and is therefore treated as minX
    <li><code>linear(12, 0, 10, 100, 200</code>} returns 100 because 12 is
    greater than maxX and is therefore treated as maxX
  </ul></div>
 </section>
 </li>
 <li>
 <section class="detail" id="checkInputForCollationAndLimit(org.apache.calcite.rel.metadata.RelMetadataQuery,org.apache.calcite.rel.RelNode,org.apache.calcite.rel.RelCollation,org.apache.calcite.rex.RexNode,org.apache.calcite.rex.RexNode)">
 <h3>checkInputForCollationAndLimit</h3>
 <div class="member-signature"><span class="modifiers">public static</span>&nbsp;<span class="return-type">boolean</span>&nbsp;<span class="element-name">checkInputForCollationAndLimit</span><wbr><span class="parameters">(<a href="RelMetadataQuery.html" title="class in org.apache.calcite.rel.metadata">RelMetadataQuery</a>&nbsp;mq,
  <a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;input,
  <a href="../RelCollation.html" title="interface in org.apache.calcite.rel">RelCollation</a>&nbsp;collation,
  @Nullable <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;offset,
  @Nullable <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;fetch)</span></div>
 <div class="block">Returns whether a relational expression is already sorted and has fewer
  rows than the sum of offset and limit.

  <p>If this is the case, it is safe to push down a
  <a href="../core/Sort.html" title="class in org.apache.calcite.rel.core"><code>Sort</code></a> with limit and optional offset.</div>
 </section>
 </li>
 <li>
 <section class="detail" id="validatePercentage(java.lang.Double)">
 <h3>validatePercentage</h3>
 <div class="member-signature"><span class="modifiers">public static</span>&nbsp;<span class="return-type">@PolyNull <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Double.html" title="class or interface in java.lang" class="external-link">Double</a></span>&nbsp;<span class="element-name">validatePercentage</span><wbr><span class="parameters">(@PolyNull <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Double.html" title="class or interface in java.lang" class="external-link">Double</a>&nbsp;result)</span></div>
 <div class="block">Validates whether a value represents a percentage number
  (that is, a value in the interval [0.0, 1.0]) and returns the value.

  <p>Returns null if and only if <code>result</code> is null.

  <p>Throws if <code>result</code> is not null, not in range 0 to 1,
  and assertions are enabled.</div>
 </section>
 </li>
 <li>
 <section class="detail" id="validateResult(java.lang.Double)">
 <h3>validateResult</h3>
 <div class="member-signature"><span class="modifiers">public static</span>&nbsp;<span class="return-type">@PolyNull <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Double.html" title="class or interface in java.lang" class="external-link">Double</a></span>&nbsp;<span class="element-name">validateResult</span><wbr><span class="parameters">(@PolyNull <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Double.html" title="class or interface in java.lang" class="external-link">Double</a>&nbsp;result)</span></div>
 <div class="block">Validates the <code>result</code> is valid.

  <p>Never let the result go below 1, as it will result in incorrect
  calculations if the row-count is used as the denominator in a
  division expression.  Also, cap the value at the max double value
  to avoid calculations using infinity.

  <p>Returns null if and only if <code>result</code> is null.

  <p>Throws if <code>result</code> is not null, is negative,
  and assertions are enabled.</div>
 <dl class="notes">
 <dt>Returns:</dt>
 <dd>the corrected value from the <code>result</code></dd>
 <dt>Throws:</dt>
 <dd><code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/AssertionError.html" title="class or interface in java.lang" class="external-link">AssertionError</a></code> - if the <code>result</code> is negative</dd>
 </dl>
 </section>
 </li>
 <li>
 <section class="detail" id="clearCache(org.apache.calcite.rel.RelNode)">
 <h3>clearCache</h3>
 <div class="member-signature"><span class="modifiers">public static</span>&nbsp;<span class="return-type">boolean</span>&nbsp;<span class="element-name">clearCache</span><wbr><span class="parameters">(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;rel)</span></div>
 <div class="block">Removes cached metadata values for specified RelNode.</div>
 <dl class="notes">
 <dt>Parameters:</dt>
 <dd><code>rel</code> - RelNode whose cached metadata should be removed</dd>
 <dt>Returns:</dt>
 <dd>true if cache for the provided RelNode was not empty</dd>
 </dl>
 </section>
 </li>
 </ul>
 </section>
 </li>
 </ul>
 </section>
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