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 <h1 title="Package org.apache.calcite.rel.core" class="title">Package org.apache.calcite.rel.core</h1>
 </div>
 <hr>
 <div class="package-signature">package <span class="element-name">org.apache.calcite.rel.core</span></div>
 <section class="package-description" id="package-description">
 <div class="block">Defines core relational expressions.

  <h2>Related packages and classes</h2>
  <ul>

  <li>Package <code>
  <a href="../logical/package-summary.html">org.apache.calcite.rel.logical</a></code>
  contains logical relational expressions

  <li>Package <code>
  <a href="../package-summary.html">org.apache.calcite.rex</a></code>
  defines the relational expression API

  </ul></div>
 </section>
 <section class="summary">
 <ul class="summary-list">
 <li>
 <div id="related-package-summary">
 <div class="caption"><span>Related Packages</span></div>
 <div class="summary-table two-column-summary">
 <div class="table-header col-first">Package</div>
 <div class="table-header col-last">Description</div>
 <div class="col-first even-row-color"><a href="../package-summary.html">org.apache.calcite.rel</a></div>
 <div class="col-last even-row-color">
 <div class="block">Defines relational expressions.</div>
 </div>
 </div>
 </div>
 </li>
 <li>
 <div id="class-summary">
 <div class="table-tabs" role="tablist" aria-orientation="horizontal"><button id="class-summary-tab0" role="tab" aria-selected="true" aria-controls="class-summary.tabpanel" tabindex="0" onkeydown="switchTab(event)" onclick="show('class-summary', 'class-summary', 2)" class="active-table-tab">All Classes and Interfaces</button><button id="class-summary-tab1" role="tab" aria-selected="false" aria-controls="class-summary.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('class-summary', 'class-summary-tab1', 2)" class="table-tab">Interfaces</button><button id="class-summary-tab2" role="tab" aria-selected="false" aria-controls="class-summary.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('class-summary', 'class-summary-tab2', 2)" class="table-tab">Classes</button><button id="class-summary-tab3" role="tab" aria-selected="false" aria-controls="class-summary.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('class-summary', 'class-summary-tab3', 2)" class="table-tab">Enums</button></div>
 <div id="class-summary.tabpanel" role="tabpanel">
 <div class="summary-table two-column-summary" aria-labelledby="class-summary-tab0">
 <div class="table-header col-first">Class</div>
 <div class="table-header col-last">Description</div>
 <div class="col-first even-row-color class-summary class-summary-tab2"><a href="Aggregate.html" title="class in org.apache.calcite.rel.core">Aggregate</a></div>
 <div class="col-last even-row-color class-summary class-summary-tab2">
 <div class="block">Relational operator that eliminates
  duplicates and computes totals.</div>
 </div>
 <div class="col-first odd-row-color class-summary class-summary-tab2"><a href="Aggregate.AggCallBinding.html" title="class in org.apache.calcite.rel.core">Aggregate.AggCallBinding</a></div>
 <div class="col-last odd-row-color class-summary class-summary-tab2">
 <div class="block">Implementation of the <a href="../../sql/SqlOperatorBinding.html" title="class in org.apache.calcite.sql"><code>SqlOperatorBinding</code></a> interface for an
  <a href="AggregateCall.html" title="class in org.apache.calcite.rel.core"><code>aggregate call</code></a> applied to a set of operands in the
  context of a <a href="../logical/LogicalAggregate.html" title="class in org.apache.calcite.rel.logical"><code>LogicalAggregate</code></a>.</div>
 </div>
 <div class="col-first even-row-color class-summary class-summary-tab3"><a href="Aggregate.Group.html" title="enum in org.apache.calcite.rel.core">Aggregate.Group</a></div>
 <div class="col-last even-row-color class-summary class-summary-tab3">
 <div class="block">Describes the kind of roll-up.</div>
 </div>
 <div class="col-first odd-row-color class-summary class-summary-tab2"><a href="Aggregate.PercentileDiscAggCallBinding.html" title="class in org.apache.calcite.rel.core">Aggregate.PercentileDiscAggCallBinding</a></div>
 <div class="col-last odd-row-color class-summary class-summary-tab2">
 <div class="block">Used for PERCENTILE_DISC return type inference.</div>
 </div>
 <div class="col-first even-row-color class-summary class-summary-tab2"><a href="AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a></div>
 <div class="col-last even-row-color class-summary class-summary-tab2">
 <div class="block">Call to an aggregate function within an
  <a href="Aggregate.html" title="class in org.apache.calcite.rel.core"><code>Aggregate</code></a>.</div>
 </div>
 <div class="col-first odd-row-color class-summary class-summary-tab2"><a href="Calc.html" title="class in org.apache.calcite.rel.core">Calc</a></div>
 <div class="col-last odd-row-color class-summary class-summary-tab2">
 <div class="block"><code>Calc</code> is an abstract base class for implementations of
  <a href="../logical/LogicalCalc.html" title="class in org.apache.calcite.rel.logical"><code>LogicalCalc</code></a>.</div>
 </div>
 <div class="col-first even-row-color class-summary class-summary-tab2"><a href="Collect.html" title="class in org.apache.calcite.rel.core">Collect</a></div>
 <div class="col-last even-row-color class-summary class-summary-tab2">
 <div class="block">A relational expression that collapses multiple rows into one.</div>
 </div>
 <div class="col-first odd-row-color class-summary class-summary-tab2"><a href="Correlate.html" title="class in org.apache.calcite.rel.core">Correlate</a></div>
 <div class="col-last odd-row-color class-summary class-summary-tab2">
 <div class="block">A relational operator that performs nested-loop joins.</div>
 </div>
 <div class="col-first even-row-color class-summary class-summary-tab2"><a href="CorrelationId.html" title="class in org.apache.calcite.rel.core">CorrelationId</a></div>
 <div class="col-last even-row-color class-summary class-summary-tab2">
 <div class="block">Describes the necessary parameters for an implementation in order to
  identify and set dynamic variables.</div>
 </div>
 <div class="col-first odd-row-color class-summary class-summary-tab2"><a href="EquiJoin.html" title="class in org.apache.calcite.rel.core">EquiJoin</a></div>
 <div class="col-last odd-row-color class-summary class-summary-tab2">Deprecated.
 <div class="deprecation-comment">This class is no longer needed; if you are writing a sub-class of
  Join that only accepts equi conditions, it is sufficient that it extends
  <a href="Join.html" title="class in org.apache.calcite.rel.core"><code>Join</code></a>.</div>
 </div>
 <div class="col-first even-row-color class-summary class-summary-tab2"><a href="Exchange.html" title="class in org.apache.calcite.rel.core">Exchange</a></div>
 <div class="col-last even-row-color class-summary class-summary-tab2">
 <div class="block">Relational expression that imposes a particular distribution on its input
  without otherwise changing its content.</div>
 </div>
 <div class="col-first odd-row-color class-summary class-summary-tab2"><a href="Filter.html" title="class in org.apache.calcite.rel.core">Filter</a></div>
 <div class="col-last odd-row-color class-summary class-summary-tab2">
 <div class="block">Relational expression that iterates over its input
  and returns elements for which <code>condition</code> evaluates to
  <code>true</code>.</div>
 </div>
 <div class="col-first even-row-color class-summary class-summary-tab2"><a href="Intersect.html" title="class in org.apache.calcite.rel.core">Intersect</a></div>
 <div class="col-last even-row-color class-summary class-summary-tab2">
 <div class="block">Relational expression that returns the intersection of the rows of its
  inputs.</div>
 </div>
 <div class="col-first odd-row-color class-summary class-summary-tab2"><a href="Join.html" title="class in org.apache.calcite.rel.core">Join</a></div>
 <div class="col-last odd-row-color class-summary class-summary-tab2">
 <div class="block">Relational expression that combines two relational expressions according to
  some condition.</div>
 </div>
 <div class="col-first even-row-color class-summary class-summary-tab2"><a href="JoinInfo.html" title="class in org.apache.calcite.rel.core">JoinInfo</a></div>
 <div class="col-last even-row-color class-summary class-summary-tab2">
 <div class="block">An analyzed join condition.</div>
 </div>
 <div class="col-first odd-row-color class-summary class-summary-tab3"><a href="JoinRelType.html" title="enum in org.apache.calcite.rel.core">JoinRelType</a></div>
 <div class="col-last odd-row-color class-summary class-summary-tab3">
 <div class="block">Enumeration of join types.</div>
 </div>
 <div class="col-first even-row-color class-summary class-summary-tab2"><a href="Match.html" title="class in org.apache.calcite.rel.core">Match</a></div>
 <div class="col-last even-row-color class-summary class-summary-tab2">
 <div class="block">Relational expression that represent a MATCH_RECOGNIZE node.</div>
 </div>
 <div class="col-first odd-row-color class-summary class-summary-tab2"><a href="Match.RexMRAggCall.html" title="class in org.apache.calcite.rel.core">Match.RexMRAggCall</a></div>
 <div class="col-last odd-row-color class-summary class-summary-tab2">
 <div class="block">Aggregate calls in match recognize.</div>
 </div>
 <div class="col-first even-row-color class-summary class-summary-tab2"><a href="Minus.html" title="class in org.apache.calcite.rel.core">Minus</a></div>
 <div class="col-last even-row-color class-summary class-summary-tab2">
 <div class="block">Relational expression that returns the rows of its first input minus any
  matching rows from its other inputs.</div>
 </div>
 <div class="col-first odd-row-color class-summary class-summary-tab2"><a href="Project.html" title="class in org.apache.calcite.rel.core">Project</a></div>
 <div class="col-last odd-row-color class-summary class-summary-tab2">
 <div class="block">Relational expression that computes a set of
  'select expressions' from its input relational expression.</div>
 </div>
 <div class="col-first even-row-color class-summary class-summary-tab2"><a href="Project.Flags.html" title="class in org.apache.calcite.rel.core">Project.Flags</a></div>
 <div class="col-last even-row-color class-summary class-summary-tab2">Deprecated.</div>
 <div class="col-first odd-row-color class-summary class-summary-tab2"><a href="RelFactories.html" title="class in org.apache.calcite.rel.core">RelFactories</a></div>
 <div class="col-last odd-row-color class-summary class-summary-tab2">
 <div class="block">Contains factory interface and default implementation for creating various
  rel nodes.</div>
 </div>
 <div class="col-first even-row-color class-summary class-summary-tab1"><a href="RelFactories.AggregateFactory.html" title="interface in org.apache.calcite.rel.core">RelFactories.AggregateFactory</a></div>
 <div class="col-last even-row-color class-summary class-summary-tab1">
 <div class="block">Can create a <a href="../logical/LogicalAggregate.html" title="class in org.apache.calcite.rel.logical"><code>LogicalAggregate</code></a> of the appropriate type
  for this rule's calling convention.</div>
 </div>
 <div class="col-first odd-row-color class-summary class-summary-tab1"><a href="RelFactories.CorrelateFactory.html" title="interface in org.apache.calcite.rel.core">RelFactories.CorrelateFactory</a></div>
 <div class="col-last odd-row-color class-summary class-summary-tab1">
 <div class="block">Can create a correlate of the appropriate type for a rule's calling
  convention.</div>
 </div>
 <div class="col-first even-row-color class-summary class-summary-tab1"><a href="RelFactories.ExchangeFactory.html" title="interface in org.apache.calcite.rel.core">RelFactories.ExchangeFactory</a></div>
 <div class="col-last even-row-color class-summary class-summary-tab1">
 <div class="block">Can create a <a href="Exchange.html" title="class in org.apache.calcite.rel.core"><code>Exchange</code></a>
  of the appropriate type for a rule's calling convention.</div>
 </div>
 <div class="col-first odd-row-color class-summary class-summary-tab1"><a href="RelFactories.FilterFactory.html" title="interface in org.apache.calcite.rel.core">RelFactories.FilterFactory</a></div>
 <div class="col-last odd-row-color class-summary class-summary-tab1">
 <div class="block">Can create a <a href="Filter.html" title="class in org.apache.calcite.rel.core"><code>Filter</code></a> of the appropriate type
  for this rule's calling convention.</div>
 </div>
 <div class="col-first even-row-color class-summary class-summary-tab1"><a href="RelFactories.JoinFactory.html" title="interface in org.apache.calcite.rel.core">RelFactories.JoinFactory</a></div>
 <div class="col-last even-row-color class-summary class-summary-tab1">
 <div class="block">Can create a join of the appropriate type for a rule's calling convention.</div>
 </div>
 <div class="col-first odd-row-color class-summary class-summary-tab1"><a href="RelFactories.MatchFactory.html" title="interface in org.apache.calcite.rel.core">RelFactories.MatchFactory</a></div>
 <div class="col-last odd-row-color class-summary class-summary-tab1">
 <div class="block">Can create a <a href="Match.html" title="class in org.apache.calcite.rel.core"><code>Match</code></a> of
  the appropriate type for a rule's calling convention.</div>
 </div>
 <div class="col-first even-row-color class-summary class-summary-tab1"><a href="RelFactories.ProjectFactory.html" title="interface in org.apache.calcite.rel.core">RelFactories.ProjectFactory</a></div>
 <div class="col-last even-row-color class-summary class-summary-tab1">
 <div class="block">Can create a
  <a href="../logical/LogicalProject.html" title="class in org.apache.calcite.rel.logical"><code>LogicalProject</code></a> of the
  appropriate type for this rule's calling convention.</div>
 </div>
 <div class="col-first odd-row-color class-summary class-summary-tab1"><a href="RelFactories.RepeatUnionFactory.html" title="interface in org.apache.calcite.rel.core">RelFactories.RepeatUnionFactory</a></div>
 <div class="col-last odd-row-color class-summary class-summary-tab1">
 <div class="block">Can create a <a href="RepeatUnion.html" title="class in org.apache.calcite.rel.core"><code>RepeatUnion</code></a> of
  the appropriate type for a rule's calling convention.</div>
 </div>
 <div class="col-first even-row-color class-summary class-summary-tab1"><a href="RelFactories.SemiJoinFactory.html" title="interface in org.apache.calcite.rel.core">RelFactories.SemiJoinFactory</a></div>
 <div class="col-last even-row-color class-summary class-summary-tab1">Deprecated.
 <div class="deprecation-comment">Use <a href="RelFactories.JoinFactory.html" title="interface in org.apache.calcite.rel.core"><code>RelFactories.JoinFactory</code></a> instead.</div>
 </div>
 <div class="col-first odd-row-color class-summary class-summary-tab1"><a href="RelFactories.SetOpFactory.html" title="interface in org.apache.calcite.rel.core">RelFactories.SetOpFactory</a></div>
 <div class="col-last odd-row-color class-summary class-summary-tab1">
 <div class="block">Can create a <a href="SetOp.html" title="class in org.apache.calcite.rel.core"><code>SetOp</code></a> for a particular kind of
  set operation (UNION, EXCEPT, INTERSECT) and of the appropriate type
  for this rule's calling convention.</div>
 </div>
 <div class="col-first even-row-color class-summary class-summary-tab1"><a href="RelFactories.SnapshotFactory.html" title="interface in org.apache.calcite.rel.core">RelFactories.SnapshotFactory</a></div>
 <div class="col-last even-row-color class-summary class-summary-tab1">
 <div class="block">Can create a <a href="Snapshot.html" title="class in org.apache.calcite.rel.core"><code>Snapshot</code></a> of
  the appropriate type for a rule's calling convention.</div>
 </div>
 <div class="col-first odd-row-color class-summary class-summary-tab2"><a href="RelFactories.SnapshotFactoryImpl.html" title="class in org.apache.calcite.rel.core">RelFactories.SnapshotFactoryImpl</a></div>
 <div class="col-last odd-row-color class-summary class-summary-tab2">
 <div class="block">Implementation of <a href="RelFactories.SnapshotFactory.html" title="interface in org.apache.calcite.rel.core"><code>RelFactories.SnapshotFactory</code></a> that
  returns a vanilla <a href="../logical/LogicalSnapshot.html" title="class in org.apache.calcite.rel.logical"><code>LogicalSnapshot</code></a>.</div>
 </div>
 <div class="col-first even-row-color class-summary class-summary-tab1"><a href="RelFactories.SortExchangeFactory.html" title="interface in org.apache.calcite.rel.core">RelFactories.SortExchangeFactory</a></div>
 <div class="col-last even-row-color class-summary class-summary-tab1">
 <div class="block">Can create a <a href="SortExchange.html" title="class in org.apache.calcite.rel.core"><code>SortExchange</code></a>
  of the appropriate type for a rule's calling convention.</div>
 </div>
 <div class="col-first odd-row-color class-summary class-summary-tab1"><a href="RelFactories.SortFactory.html" title="interface in org.apache.calcite.rel.core">RelFactories.SortFactory</a></div>
 <div class="col-last odd-row-color class-summary class-summary-tab1">
 <div class="block">Can create a <a href="Sort.html" title="class in org.apache.calcite.rel.core"><code>Sort</code></a> of the appropriate type
  for this rule's calling convention.</div>
 </div>
 <div class="col-first even-row-color class-summary class-summary-tab1"><a href="RelFactories.SpoolFactory.html" title="interface in org.apache.calcite.rel.core">RelFactories.SpoolFactory</a></div>
 <div class="col-last even-row-color class-summary class-summary-tab1">
 <div class="block">Can create a <a href="Spool.html" title="class in org.apache.calcite.rel.core"><code>Spool</code></a> of
  the appropriate type for a rule's calling convention.</div>
 </div>
 <div class="col-first odd-row-color class-summary class-summary-tab2"><a href="RelFactories.Struct.html" title="class in org.apache.calcite.rel.core">RelFactories.Struct</a></div>
 <div class="col-last odd-row-color class-summary class-summary-tab2">
 <div class="block">Immutable record that contains an instance of each factory.</div>
 </div>
 <div class="col-first even-row-color class-summary class-summary-tab1"><a href="RelFactories.TableFunctionScanFactory.html" title="interface in org.apache.calcite.rel.core">RelFactories.TableFunctionScanFactory</a></div>
 <div class="col-last even-row-color class-summary class-summary-tab1">
 <div class="block">Can create a <a href="TableFunctionScan.html" title="class in org.apache.calcite.rel.core"><code>TableFunctionScan</code></a>
  of the appropriate type for a rule's calling convention.</div>
 </div>
 <div class="col-first odd-row-color class-summary class-summary-tab1"><a href="RelFactories.TableScanFactory.html" title="interface in org.apache.calcite.rel.core">RelFactories.TableScanFactory</a></div>
 <div class="col-last odd-row-color class-summary class-summary-tab1">
 <div class="block">Can create a <a href="TableScan.html" title="class in org.apache.calcite.rel.core"><code>TableScan</code></a> of the appropriate type for a rule's calling
  convention.</div>
 </div>
 <div class="col-first even-row-color class-summary class-summary-tab1"><a href="RelFactories.ValuesFactory.html" title="interface in org.apache.calcite.rel.core">RelFactories.ValuesFactory</a></div>
 <div class="col-last even-row-color class-summary class-summary-tab1">
 <div class="block">Can create a <a href="Values.html" title="class in org.apache.calcite.rel.core"><code>Values</code></a> of the appropriate type for a rule's calling
  convention.</div>
 </div>
 <div class="col-first odd-row-color class-summary class-summary-tab2"><a href="RepeatUnion.html" title="class in org.apache.calcite.rel.core">RepeatUnion</a></div>
 <div class="col-last odd-row-color class-summary class-summary-tab2">
 <div class="block">Relational expression that computes a repeat union (recursive union in SQL
  terminology).</div>
 </div>
 <div class="col-first even-row-color class-summary class-summary-tab2"><a href="Sample.html" title="class in org.apache.calcite.rel.core">Sample</a></div>
 <div class="col-last even-row-color class-summary class-summary-tab2">
 <div class="block">Relational expression that returns a sample of the rows from its input.</div>
 </div>
 <div class="col-first odd-row-color class-summary class-summary-tab2"><a href="SetOp.html" title="class in org.apache.calcite.rel.core">SetOp</a></div>
 <div class="col-last odd-row-color class-summary class-summary-tab2">
 <div class="block"><code>SetOp</code> is an abstract base for relational set operators such
  as UNION, MINUS (aka EXCEPT), and INTERSECT.</div>
 </div>
 <div class="col-first even-row-color class-summary class-summary-tab2"><a href="Snapshot.html" title="class in org.apache.calcite.rel.core">Snapshot</a></div>
 <div class="col-last even-row-color class-summary class-summary-tab2">
 <div class="block">Relational expression that returns the contents of a relation expression as
  it was at a given time in the past.</div>
 </div>
 <div class="col-first odd-row-color class-summary class-summary-tab2"><a href="Sort.html" title="class in org.apache.calcite.rel.core">Sort</a></div>
 <div class="col-last odd-row-color class-summary class-summary-tab2">
 <div class="block">Relational expression that imposes a particular sort order on its input
  without otherwise changing its content.</div>
 </div>
 <div class="col-first even-row-color class-summary class-summary-tab2"><a href="SortExchange.html" title="class in org.apache.calcite.rel.core">SortExchange</a></div>
 <div class="col-last even-row-color class-summary class-summary-tab2">
 <div class="block">Relational expression that performs <a href="Exchange.html" title="class in org.apache.calcite.rel.core"><code>Exchange</code></a> and <a href="Sort.html" title="class in org.apache.calcite.rel.core"><code>Sort</code></a>
  simultaneously.</div>
 </div>
 <div class="col-first odd-row-color class-summary class-summary-tab2"><a href="Spool.html" title="class in org.apache.calcite.rel.core">Spool</a></div>
 <div class="col-last odd-row-color class-summary class-summary-tab2">
 <div class="block">Relational expression that iterates over its input and, in addition to
  returning its results, will forward them into other consumers.</div>
 </div>
 <div class="col-first even-row-color class-summary class-summary-tab3"><a href="Spool.Type.html" title="enum in org.apache.calcite.rel.core">Spool.Type</a></div>
 <div class="col-last even-row-color class-summary class-summary-tab3">
 <div class="block">Enumeration representing spool read / write type.</div>
 </div>
 <div class="col-first odd-row-color class-summary class-summary-tab2"><a href="TableFunctionScan.html" title="class in org.apache.calcite.rel.core">TableFunctionScan</a></div>
 <div class="col-last odd-row-color class-summary class-summary-tab2">
 <div class="block">Relational expression that calls a table-valued function.</div>
 </div>
 <div class="col-first even-row-color class-summary class-summary-tab2"><a href="TableModify.html" title="class in org.apache.calcite.rel.core">TableModify</a></div>
 <div class="col-last even-row-color class-summary class-summary-tab2">
 <div class="block">Relational expression that modifies a table.</div>
 </div>
 <div class="col-first odd-row-color class-summary class-summary-tab3"><a href="TableModify.Operation.html" title="enum in org.apache.calcite.rel.core">TableModify.Operation</a></div>
 <div class="col-last odd-row-color class-summary class-summary-tab3">
 <div class="block">Enumeration of supported modification operations.</div>
 </div>
 <div class="col-first even-row-color class-summary class-summary-tab2"><a href="TableScan.html" title="class in org.apache.calcite.rel.core">TableScan</a></div>
 <div class="col-last even-row-color class-summary class-summary-tab2">
 <div class="block">Relational operator that returns the contents of a table.</div>
 </div>
 <div class="col-first odd-row-color class-summary class-summary-tab2"><a href="TableSpool.html" title="class in org.apache.calcite.rel.core">TableSpool</a></div>
 <div class="col-last odd-row-color class-summary class-summary-tab2">
 <div class="block">Spool that writes into a table.</div>
 </div>
 <div class="col-first even-row-color class-summary class-summary-tab2"><a href="Uncollect.html" title="class in org.apache.calcite.rel.core">Uncollect</a></div>
 <div class="col-last even-row-color class-summary class-summary-tab2">
 <div class="block">Relational expression that unnests its input's columns into a relation.</div>
 </div>
 <div class="col-first odd-row-color class-summary class-summary-tab2"><a href="Union.html" title="class in org.apache.calcite.rel.core">Union</a></div>
 <div class="col-last odd-row-color class-summary class-summary-tab2">
 <div class="block">Relational expression that returns the union of the rows of its inputs,
  optionally eliminating duplicates.</div>
 </div>
 <div class="col-first even-row-color class-summary class-summary-tab2"><a href="Values.html" title="class in org.apache.calcite.rel.core">Values</a></div>
 <div class="col-last even-row-color class-summary class-summary-tab2">
 <div class="block">Relational expression whose value is a sequence of zero or more literal row
  values.</div>
 </div>
 <div class="col-first odd-row-color class-summary class-summary-tab2"><a href="Window.html" title="class in org.apache.calcite.rel.core">Window</a></div>
 <div class="col-last odd-row-color class-summary class-summary-tab2">
 <div class="block">A relational expression representing a set of window aggregates.</div>
 </div>
 <div class="col-first even-row-color class-summary class-summary-tab2"><a href="Window.Group.html" title="class in org.apache.calcite.rel.core">Window.Group</a></div>
 <div class="col-last even-row-color class-summary class-summary-tab2">
 <div class="block">Group of windowed aggregate calls that have the same window specification.</div>
 </div>
 <div class="col-first odd-row-color class-summary class-summary-tab2"><a href="Window.RexWinAggCall.html" title="class in org.apache.calcite.rel.core">Window.RexWinAggCall</a></div>
 <div class="col-last odd-row-color class-summary class-summary-tab2">
 <div class="block">A call to a windowed aggregate function.</div>
 </div>
 </div>
 </div>
 </div>
 </li>
 </ul>
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