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 <h1 title="Uses of Package org.apache.calcite.rel.core" class="title">Uses of Package<br>org.apache.calcite.rel.core</h1>
 </div>
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 <li class="blockList">
 <table class="useSummary">
 <caption><span>Packages that use <a href="package-summary.html">org.apache.calcite.rel.core</a></span><span class="tabEnd">&nbsp;</span></caption>
 <tr>
 <th class="colFirst" scope="col">Package</th>
 <th class="colLast" scope="col">Description</th>
 </tr>
 <tbody>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.adapter.cassandra">org.apache.calcite.adapter.cassandra</a></th>
 <td class="colLast">
 <div class="block">Cassandra query provider.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.adapter.csv">org.apache.calcite.adapter.csv</a></th>
 <td class="colLast">
 <div class="block">Calcite query provider that reads from CSV (comma-separated value) files.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.adapter.druid">org.apache.calcite.adapter.druid</a></th>
 <td class="colLast">
 <div class="block">Query provider based on a Druid database.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.adapter.elasticsearch">org.apache.calcite.adapter.elasticsearch</a></th>
 <td class="colLast">
 <div class="block">Query provider based on an Elasticsearch2 DB.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.adapter.enumerable">org.apache.calcite.adapter.enumerable</a></th>
 <td class="colLast">
 <div class="block">Query optimizer rules for Java calling convention.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.adapter.enumerable.impl">org.apache.calcite.adapter.enumerable.impl</a></th>
 <td class="colLast">
 <div class="block">Calcite-specific classes for implementation of regular and window aggregates.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.adapter.file">org.apache.calcite.adapter.file</a></th>
 <td class="colLast">
 <div class="block">Calcite query provider that reads from web tables (HTML).</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.adapter.geode.rel">org.apache.calcite.adapter.geode.rel</a></th>
 <td class="colLast">
 <div class="block">Query provider based on Apache Geode (Gemfire) In Memory Data Grid</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.adapter.jdbc">org.apache.calcite.adapter.jdbc</a></th>
 <td class="colLast">
 <div class="block">Query provider based on a JDBC data source.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.adapter.mongodb">org.apache.calcite.adapter.mongodb</a></th>
 <td class="colLast">
 <div class="block">Query provider based on a MongoDB database.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.adapter.pig">org.apache.calcite.adapter.pig</a></th>
 <td class="colLast">
 <div class="block">Pig query provider.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.adapter.spark">org.apache.calcite.adapter.spark</a></th>
 <td class="colLast">
 <div class="block">Adapter based on the Apache Spark data management system.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.adapter.splunk">org.apache.calcite.adapter.splunk</a></th>
 <td class="colLast">
 <div class="block">Splunk query provider.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.interpreter">org.apache.calcite.interpreter</a></th>
 <td class="colLast">
 <div class="block">Provides an implementation of relational expressions using an interpreter.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.materialize">org.apache.calcite.materialize</a></th>
 <td class="colLast">
 <div class="block">Management of materialized query results.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.piglet">org.apache.calcite.piglet</a></th>
 <td class="colLast">
 <div class="block">Piglet, a Pig-like language.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.plan">org.apache.calcite.plan</a></th>
 <td class="colLast">
 <div class="block">Defines interfaces for constructing rule-based optimizers of
  relational expressions.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.plan.volcano">org.apache.calcite.plan.volcano</a></th>
 <td class="colLast">
 <div class="block">Optimizes relational expressions.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.prepare">org.apache.calcite.prepare</a></th>
 <td class="colLast">
 <div class="block">Preparation of queries (parsing, planning and implementation).</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.rel">org.apache.calcite.rel</a></th>
 <td class="colLast">
 <div class="block">Defines relational expressions.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.rel.core">org.apache.calcite.rel.core</a></th>
 <td class="colLast">
 <div class="block">Defines core relational expressions.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.rel.externalize">org.apache.calcite.rel.externalize</a></th>
 <td class="colLast">
 <div class="block">Facilities to externalize <a href="../RelNode.html" title="interface in org.apache.calcite.rel"><code>RelNode</code></a>s to and from
  XML and JSON format.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.rel.logical">org.apache.calcite.rel.logical</a></th>
 <td class="colLast">
 <div class="block">Defines logical relational expressions.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.rel.metadata">org.apache.calcite.rel.metadata</a></th>
 <td class="colLast">
 <div class="block">Defines metadata interfaces and utilities for relational
  expressions.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.rel.mutable">org.apache.calcite.rel.mutable</a></th>
 <td class="colLast">
 <div class="block">Defines mutable relational expressions.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.rel.rel2sql">org.apache.calcite.rel.rel2sql</a></th>
 <td class="colLast">
 <div class="block">Translates a relational expression to SQL parse tree.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.rel.rules">org.apache.calcite.rel.rules</a></th>
 <td class="colLast">
 <div class="block">Provides a core set of planner rules.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.rex">org.apache.calcite.rex</a></th>
 <td class="colLast">
 <div class="block">Provides a language for representing row-expressions.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.schema">org.apache.calcite.schema</a></th>
 <td class="colLast">
 <div class="block">Schema SPI.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.schema.impl">org.apache.calcite.schema.impl</a></th>
 <td class="colLast">
 <div class="block">Utilities to help implement Calcite's SPIs.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.sql">org.apache.calcite.sql</a></th>
 <td class="colLast">
 <div class="block">Provides a SQL parser and object model.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.sql.ddl">org.apache.calcite.sql.ddl</a></th>
 <td class="colLast">
 <div class="block">Parse tree for SQL DDL statements.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.sql.validate">org.apache.calcite.sql.validate</a></th>
 <td class="colLast">
 <div class="block">SQL validation.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.sql2rel">org.apache.calcite.sql2rel</a></th>
 <td class="colLast">
 <div class="block">Translates a SQL parse tree to relational expression.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="#org.apache.calcite.tools">org.apache.calcite.tools</a></th>
 <td class="colLast">
 <div class="block">Provides utility classes.</div>
 </td>
 </tr>
 </tbody>
 </table>
 </li>
 <li class="blockList"><a id="org.apache.calcite.adapter.cassandra">
 <!--   -->
 </a>
 <table class="useSummary">
 <caption><span>Classes in <a href="package-summary.html">org.apache.calcite.rel.core</a> used by <a href="../../adapter/cassandra/package-summary.html">org.apache.calcite.adapter.cassandra</a></span><span class="tabEnd">&nbsp;</span></caption>
 <tr>
 <th class="colFirst" scope="col">Class</th>
 <th class="colLast" scope="col">Description</th>
 </tr>
 <tbody>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Filter.html#org.apache.calcite.adapter.cassandra">Filter</a></th>
 <td class="colLast">
 <div class="block">Relational expression that iterates over its input
  and returns elements for which <code>condition</code> evaluates to
  <code>true</code>.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Project.html#org.apache.calcite.adapter.cassandra">Project</a></th>
 <td class="colLast">
 <div class="block">Relational expression that computes a set of
  'select expressions' from its input relational expression.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Sort.html#org.apache.calcite.adapter.cassandra">Sort</a></th>
 <td class="colLast">
 <div class="block">Relational expression that imposes a particular sort order on its input
  without otherwise changing its content.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/TableScan.html#org.apache.calcite.adapter.cassandra">TableScan</a></th>
 <td class="colLast">
 <div class="block">Relational operator that returns the contents of a table.</div>
 </td>
 </tr>
 </tbody>
 </table>
 </li>
 <li class="blockList"><a id="org.apache.calcite.adapter.csv">
 <!--   -->
 </a>
 <table class="useSummary">
 <caption><span>Classes in <a href="package-summary.html">org.apache.calcite.rel.core</a> used by <a href="../../adapter/csv/package-summary.html">org.apache.calcite.adapter.csv</a></span><span class="tabEnd">&nbsp;</span></caption>
 <tr>
 <th class="colFirst" scope="col">Class</th>
 <th class="colLast" scope="col">Description</th>
 </tr>
 <tbody>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/TableScan.html#org.apache.calcite.adapter.csv">TableScan</a></th>
 <td class="colLast">
 <div class="block">Relational operator that returns the contents of a table.</div>
 </td>
 </tr>
 </tbody>
 </table>
 </li>
 <li class="blockList"><a id="org.apache.calcite.adapter.druid">
 <!--   -->
 </a>
 <table class="useSummary">
 <caption><span>Classes in <a href="package-summary.html">org.apache.calcite.rel.core</a> used by <a href="../../adapter/druid/package-summary.html">org.apache.calcite.adapter.druid</a></span><span class="tabEnd">&nbsp;</span></caption>
 <tr>
 <th class="colFirst" scope="col">Class</th>
 <th class="colLast" scope="col">Description</th>
 </tr>
 <tbody>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Aggregate.html#org.apache.calcite.adapter.druid">Aggregate</a></th>
 <td class="colLast">
 <div class="block">Relational operator that eliminates
  duplicates and computes totals.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/AggregateCall.html#org.apache.calcite.adapter.druid">AggregateCall</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Filter.html#org.apache.calcite.adapter.druid">Filter</a></th>
 <td class="colLast">
 <div class="block">Relational expression that iterates over its input
  and returns elements for which <code>condition</code> evaluates to
  <code>true</code>.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Project.html#org.apache.calcite.adapter.druid">Project</a></th>
 <td class="colLast">
 <div class="block">Relational expression that computes a set of
  'select expressions' from its input relational expression.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/TableScan.html#org.apache.calcite.adapter.druid">TableScan</a></th>
 <td class="colLast">
 <div class="block">Relational operator that returns the contents of a table.</div>
 </td>
 </tr>
 </tbody>
 </table>
 </li>
 <li class="blockList"><a id="org.apache.calcite.adapter.elasticsearch">
 <!--   -->
 </a>
 <table class="useSummary">
 <caption><span>Classes in <a href="package-summary.html">org.apache.calcite.rel.core</a> used by <a href="../../adapter/elasticsearch/package-summary.html">org.apache.calcite.adapter.elasticsearch</a></span><span class="tabEnd">&nbsp;</span></caption>
 <tr>
 <th class="colFirst" scope="col">Class</th>
 <th class="colLast" scope="col">Description</th>
 </tr>
 <tbody>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Aggregate.html#org.apache.calcite.adapter.elasticsearch">Aggregate</a></th>
 <td class="colLast">
 <div class="block">Relational operator that eliminates
  duplicates and computes totals.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/AggregateCall.html#org.apache.calcite.adapter.elasticsearch">AggregateCall</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Filter.html#org.apache.calcite.adapter.elasticsearch">Filter</a></th>
 <td class="colLast">
 <div class="block">Relational expression that iterates over its input
  and returns elements for which <code>condition</code> evaluates to
  <code>true</code>.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Project.html#org.apache.calcite.adapter.elasticsearch">Project</a></th>
 <td class="colLast">
 <div class="block">Relational expression that computes a set of
  'select expressions' from its input relational expression.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Sort.html#org.apache.calcite.adapter.elasticsearch">Sort</a></th>
 <td class="colLast">
 <div class="block">Relational expression that imposes a particular sort order on its input
  without otherwise changing its content.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/TableScan.html#org.apache.calcite.adapter.elasticsearch">TableScan</a></th>
 <td class="colLast">
 <div class="block">Relational operator that returns the contents of a table.</div>
 </td>
 </tr>
 </tbody>
 </table>
 </li>
 <li class="blockList"><a id="org.apache.calcite.adapter.enumerable">
 <!--   -->
 </a>
 <table class="useSummary">
 <caption><span>Classes in <a href="package-summary.html">org.apache.calcite.rel.core</a> used by <a href="../../adapter/enumerable/package-summary.html">org.apache.calcite.adapter.enumerable</a></span><span class="tabEnd">&nbsp;</span></caption>
 <tr>
 <th class="colFirst" scope="col">Class</th>
 <th class="colLast" scope="col">Description</th>
 </tr>
 <tbody>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Aggregate.html#org.apache.calcite.adapter.enumerable">Aggregate</a></th>
 <td class="colLast">
 <div class="block">Relational operator that eliminates
  duplicates and computes totals.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/AggregateCall.html#org.apache.calcite.adapter.enumerable">AggregateCall</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Calc.html#org.apache.calcite.adapter.enumerable">Calc</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Collect.html#org.apache.calcite.adapter.enumerable">Collect</a></th>
 <td class="colLast">
 <div class="block">A relational expression that collapses multiple rows into one.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Correlate.html#org.apache.calcite.adapter.enumerable">Correlate</a></th>
 <td class="colLast">
 <div class="block">A relational operator that performs nested-loop joins.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/CorrelationId.html#org.apache.calcite.adapter.enumerable">CorrelationId</a></th>
 <td class="colLast">
 <div class="block">Describes the necessary parameters for an implementation in order to
  identify and set dynamic variables</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Filter.html#org.apache.calcite.adapter.enumerable">Filter</a></th>
 <td class="colLast">
 <div class="block">Relational expression that iterates over its input
  and returns elements for which <code>condition</code> evaluates to
  <code>true</code>.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Intersect.html#org.apache.calcite.adapter.enumerable">Intersect</a></th>
 <td class="colLast">
 <div class="block">Relational expression that returns the intersection of the rows of its
  inputs.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Join.html#org.apache.calcite.adapter.enumerable">Join</a></th>
 <td class="colLast">
 <div class="block">Relational expression that combines two relational expressions according to
  some condition.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/JoinRelType.html#org.apache.calcite.adapter.enumerable">JoinRelType</a></th>
 <td class="colLast">
 <div class="block">Enumeration of join types.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Match.html#org.apache.calcite.adapter.enumerable">Match</a></th>
 <td class="colLast">
 <div class="block">Relational expression that represent a MATCH_RECOGNIZE node.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Minus.html#org.apache.calcite.adapter.enumerable">Minus</a></th>
 <td class="colLast">
 <div class="block">Relational expression that returns the rows of its first input minus any
  matching rows from its other inputs.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Project.html#org.apache.calcite.adapter.enumerable">Project</a></th>
 <td class="colLast">
 <div class="block">Relational expression that computes a set of
  'select expressions' from its input relational expression.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.FilterFactory.html#org.apache.calcite.adapter.enumerable">RelFactories.FilterFactory</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.ProjectFactory.html#org.apache.calcite.adapter.enumerable">RelFactories.ProjectFactory</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RepeatUnion.html#org.apache.calcite.adapter.enumerable">RepeatUnion</a></th>
 <td class="colLast">
 <div class="block">Relational expression that computes a repeat union (recursive union in SQL
  terminology).</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/SetOp.html#org.apache.calcite.adapter.enumerable">SetOp</a></th>
 <td class="colLast">
 <div class="block"><code>SetOp</code> is an abstract base for relational set operators such
  as UNION, MINUS (aka EXCEPT), and INTERSECT.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Sort.html#org.apache.calcite.adapter.enumerable">Sort</a></th>
 <td class="colLast">
 <div class="block">Relational expression that imposes a particular sort order on its input
  without otherwise changing its content.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Spool.html#org.apache.calcite.adapter.enumerable">Spool</a></th>
 <td class="colLast">
 <div class="block">Relational expression that iterates over its input and, in addition to
  returning its results, will forward them into other consumers.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Spool.Type.html#org.apache.calcite.adapter.enumerable">Spool.Type</a></th>
 <td class="colLast">
 <div class="block">Enumeration representing spool read / write type.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/TableFunctionScan.html#org.apache.calcite.adapter.enumerable">TableFunctionScan</a></th>
 <td class="colLast">
 <div class="block">Relational expression that calls a table-valued function.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/TableModify.html#org.apache.calcite.adapter.enumerable">TableModify</a></th>
 <td class="colLast">
 <div class="block">Relational expression that modifies a table.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/TableModify.Operation.html#org.apache.calcite.adapter.enumerable">TableModify.Operation</a></th>
 <td class="colLast">
 <div class="block">Enumeration of supported modification operations.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/TableScan.html#org.apache.calcite.adapter.enumerable">TableScan</a></th>
 <td class="colLast">
 <div class="block">Relational operator that returns the contents of a table.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/TableSpool.html#org.apache.calcite.adapter.enumerable">TableSpool</a></th>
 <td class="colLast">
 <div class="block">Spool that writes into a table.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Uncollect.html#org.apache.calcite.adapter.enumerable">Uncollect</a></th>
 <td class="colLast">
 <div class="block">Relational expression that unnests its input's columns into a relation.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Union.html#org.apache.calcite.adapter.enumerable">Union</a></th>
 <td class="colLast">
 <div class="block">Relational expression that returns the union of the rows of its inputs,
  optionally eliminating duplicates.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Values.html#org.apache.calcite.adapter.enumerable">Values</a></th>
 <td class="colLast">
 <div class="block">Relational expression whose value is a sequence of zero or more literal row
  values.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Window.html#org.apache.calcite.adapter.enumerable">Window</a></th>
 <td class="colLast">
 <div class="block">A relational expression representing a set of window aggregates.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Window.Group.html#org.apache.calcite.adapter.enumerable">Window.Group</a></th>
 <td class="colLast">
 <div class="block">Group of windowed aggregate calls that have the same window specification.</div>
 </td>
 </tr>
 </tbody>
 </table>
 </li>
 <li class="blockList"><a id="org.apache.calcite.adapter.enumerable.impl">
 <!--   -->
 </a>
 <table class="useSummary">
 <caption><span>Classes in <a href="package-summary.html">org.apache.calcite.rel.core</a> used by <a href="../../adapter/enumerable/impl/package-summary.html">org.apache.calcite.adapter.enumerable.impl</a></span><span class="tabEnd">&nbsp;</span></caption>
 <tr>
 <th class="colFirst" scope="col">Class</th>
 <th class="colLast" scope="col">Description</th>
 </tr>
 <tbody>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/AggregateCall.html#org.apache.calcite.adapter.enumerable.impl">AggregateCall</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 </tbody>
 </table>
 </li>
 <li class="blockList"><a id="org.apache.calcite.adapter.file">
 <!--   -->
 </a>
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 <caption><span>Classes in <a href="package-summary.html">org.apache.calcite.rel.core</a> used by <a href="../../adapter/file/package-summary.html">org.apache.calcite.adapter.file</a></span><span class="tabEnd">&nbsp;</span></caption>
 <tr>
 <th class="colFirst" scope="col">Class</th>
 <th class="colLast" scope="col">Description</th>
 </tr>
 <tbody>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/TableScan.html#org.apache.calcite.adapter.file">TableScan</a></th>
 <td class="colLast">
 <div class="block">Relational operator that returns the contents of a table.</div>
 </td>
 </tr>
 </tbody>
 </table>
 </li>
 <li class="blockList"><a id="org.apache.calcite.adapter.geode.rel">
 <!--   -->
 </a>
 <table class="useSummary">
 <caption><span>Classes in <a href="package-summary.html">org.apache.calcite.rel.core</a> used by <a href="../../adapter/geode/rel/package-summary.html">org.apache.calcite.adapter.geode.rel</a></span><span class="tabEnd">&nbsp;</span></caption>
 <tr>
 <th class="colFirst" scope="col">Class</th>
 <th class="colLast" scope="col">Description</th>
 </tr>
 <tbody>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Aggregate.html#org.apache.calcite.adapter.geode.rel">Aggregate</a></th>
 <td class="colLast">
 <div class="block">Relational operator that eliminates
  duplicates and computes totals.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Filter.html#org.apache.calcite.adapter.geode.rel">Filter</a></th>
 <td class="colLast">
 <div class="block">Relational expression that iterates over its input
  and returns elements for which <code>condition</code> evaluates to
  <code>true</code>.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Project.html#org.apache.calcite.adapter.geode.rel">Project</a></th>
 <td class="colLast">
 <div class="block">Relational expression that computes a set of
  'select expressions' from its input relational expression.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Sort.html#org.apache.calcite.adapter.geode.rel">Sort</a></th>
 <td class="colLast">
 <div class="block">Relational expression that imposes a particular sort order on its input
  without otherwise changing its content.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/TableScan.html#org.apache.calcite.adapter.geode.rel">TableScan</a></th>
 <td class="colLast">
 <div class="block">Relational operator that returns the contents of a table.</div>
 </td>
 </tr>
 </tbody>
 </table>
 </li>
 <li class="blockList"><a id="org.apache.calcite.adapter.jdbc">
 <!--   -->
 </a>
 <table class="useSummary">
 <caption><span>Classes in <a href="package-summary.html">org.apache.calcite.rel.core</a> used by <a href="../../adapter/jdbc/package-summary.html">org.apache.calcite.adapter.jdbc</a></span><span class="tabEnd">&nbsp;</span></caption>
 <tr>
 <th class="colFirst" scope="col">Class</th>
 <th class="colLast" scope="col">Description</th>
 </tr>
 <tbody>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Aggregate.html#org.apache.calcite.adapter.jdbc">Aggregate</a></th>
 <td class="colLast">
 <div class="block">Relational operator that eliminates
  duplicates and computes totals.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/CorrelationId.html#org.apache.calcite.adapter.jdbc">CorrelationId</a></th>
 <td class="colLast">
 <div class="block">Describes the necessary parameters for an implementation in order to
  identify and set dynamic variables</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Filter.html#org.apache.calcite.adapter.jdbc">Filter</a></th>
 <td class="colLast">
 <div class="block">Relational expression that iterates over its input
  and returns elements for which <code>condition</code> evaluates to
  <code>true</code>.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Intersect.html#org.apache.calcite.adapter.jdbc">Intersect</a></th>
 <td class="colLast">
 <div class="block">Relational expression that returns the intersection of the rows of its
  inputs.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Join.html#org.apache.calcite.adapter.jdbc">Join</a></th>
 <td class="colLast">
 <div class="block">Relational expression that combines two relational expressions according to
  some condition.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/JoinRelType.html#org.apache.calcite.adapter.jdbc">JoinRelType</a></th>
 <td class="colLast">
 <div class="block">Enumeration of join types.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Minus.html#org.apache.calcite.adapter.jdbc">Minus</a></th>
 <td class="colLast">
 <div class="block">Relational expression that returns the rows of its first input minus any
  matching rows from its other inputs.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Project.html#org.apache.calcite.adapter.jdbc">Project</a></th>
 <td class="colLast">
 <div class="block">Relational expression that computes a set of
  'select expressions' from its input relational expression.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.AggregateFactory.html#org.apache.calcite.adapter.jdbc">RelFactories.AggregateFactory</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.CorrelateFactory.html#org.apache.calcite.adapter.jdbc">RelFactories.CorrelateFactory</a></th>
 <td class="colLast">
 <div class="block">Can create a correlate of the appropriate type for a rule's calling
  convention.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.ExchangeFactory.html#org.apache.calcite.adapter.jdbc">RelFactories.ExchangeFactory</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.FilterFactory.html#org.apache.calcite.adapter.jdbc">RelFactories.FilterFactory</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.JoinFactory.html#org.apache.calcite.adapter.jdbc">RelFactories.JoinFactory</a></th>
 <td class="colLast">
 <div class="block">Can create a join of the appropriate type for a rule's calling convention.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.MatchFactory.html#org.apache.calcite.adapter.jdbc">RelFactories.MatchFactory</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.ProjectFactory.html#org.apache.calcite.adapter.jdbc">RelFactories.ProjectFactory</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.SetOpFactory.html#org.apache.calcite.adapter.jdbc">RelFactories.SetOpFactory</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.SnapshotFactory.html#org.apache.calcite.adapter.jdbc">RelFactories.SnapshotFactory</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.SortExchangeFactory.html#org.apache.calcite.adapter.jdbc">RelFactories.SortExchangeFactory</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.SortFactory.html#org.apache.calcite.adapter.jdbc">RelFactories.SortFactory</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.TableScanFactory.html#org.apache.calcite.adapter.jdbc">RelFactories.TableScanFactory</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.ValuesFactory.html#org.apache.calcite.adapter.jdbc">RelFactories.ValuesFactory</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/SetOp.html#org.apache.calcite.adapter.jdbc">SetOp</a></th>
 <td class="colLast">
 <div class="block"><code>SetOp</code> is an abstract base for relational set operators such
  as UNION, MINUS (aka EXCEPT), and INTERSECT.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Sort.html#org.apache.calcite.adapter.jdbc">Sort</a></th>
 <td class="colLast">
 <div class="block">Relational expression that imposes a particular sort order on its input
  without otherwise changing its content.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/TableModify.html#org.apache.calcite.adapter.jdbc">TableModify</a></th>
 <td class="colLast">
 <div class="block">Relational expression that modifies a table.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/TableModify.Operation.html#org.apache.calcite.adapter.jdbc">TableModify.Operation</a></th>
 <td class="colLast">
 <div class="block">Enumeration of supported modification operations.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/TableScan.html#org.apache.calcite.adapter.jdbc">TableScan</a></th>
 <td class="colLast">
 <div class="block">Relational operator that returns the contents of a table.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Union.html#org.apache.calcite.adapter.jdbc">Union</a></th>
 <td class="colLast">
 <div class="block">Relational expression that returns the union of the rows of its inputs,
  optionally eliminating duplicates.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Values.html#org.apache.calcite.adapter.jdbc">Values</a></th>
 <td class="colLast">
 <div class="block">Relational expression whose value is a sequence of zero or more literal row
  values.</div>
 </td>
 </tr>
 </tbody>
 </table>
 </li>
 <li class="blockList"><a id="org.apache.calcite.adapter.mongodb">
 <!--   -->
 </a>
 <table class="useSummary">
 <caption><span>Classes in <a href="package-summary.html">org.apache.calcite.rel.core</a> used by <a href="../../adapter/mongodb/package-summary.html">org.apache.calcite.adapter.mongodb</a></span><span class="tabEnd">&nbsp;</span></caption>
 <tr>
 <th class="colFirst" scope="col">Class</th>
 <th class="colLast" scope="col">Description</th>
 </tr>
 <tbody>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Aggregate.html#org.apache.calcite.adapter.mongodb">Aggregate</a></th>
 <td class="colLast">
 <div class="block">Relational operator that eliminates
  duplicates and computes totals.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Filter.html#org.apache.calcite.adapter.mongodb">Filter</a></th>
 <td class="colLast">
 <div class="block">Relational expression that iterates over its input
  and returns elements for which <code>condition</code> evaluates to
  <code>true</code>.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Project.html#org.apache.calcite.adapter.mongodb">Project</a></th>
 <td class="colLast">
 <div class="block">Relational expression that computes a set of
  'select expressions' from its input relational expression.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Sort.html#org.apache.calcite.adapter.mongodb">Sort</a></th>
 <td class="colLast">
 <div class="block">Relational expression that imposes a particular sort order on its input
  without otherwise changing its content.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/TableScan.html#org.apache.calcite.adapter.mongodb">TableScan</a></th>
 <td class="colLast">
 <div class="block">Relational operator that returns the contents of a table.</div>
 </td>
 </tr>
 </tbody>
 </table>
 </li>
 <li class="blockList"><a id="org.apache.calcite.adapter.pig">
 <!--   -->
 </a>
 <table class="useSummary">
 <caption><span>Classes in <a href="package-summary.html">org.apache.calcite.rel.core</a> used by <a href="../../adapter/pig/package-summary.html">org.apache.calcite.adapter.pig</a></span><span class="tabEnd">&nbsp;</span></caption>
 <tr>
 <th class="colFirst" scope="col">Class</th>
 <th class="colLast" scope="col">Description</th>
 </tr>
 <tbody>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Aggregate.html#org.apache.calcite.adapter.pig">Aggregate</a></th>
 <td class="colLast">
 <div class="block">Relational operator that eliminates
  duplicates and computes totals.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/AggregateCall.html#org.apache.calcite.adapter.pig">AggregateCall</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/CorrelationId.html#org.apache.calcite.adapter.pig">CorrelationId</a></th>
 <td class="colLast">
 <div class="block">Describes the necessary parameters for an implementation in order to
  identify and set dynamic variables</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Filter.html#org.apache.calcite.adapter.pig">Filter</a></th>
 <td class="colLast">
 <div class="block">Relational expression that iterates over its input
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 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Join.html#org.apache.calcite.adapter.pig">Join</a></th>
 <td class="colLast">
 <div class="block">Relational expression that combines two relational expressions according to
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 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/JoinRelType.html#org.apache.calcite.adapter.pig">JoinRelType</a></th>
 <td class="colLast">
 <div class="block">Enumeration of join types.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Project.html#org.apache.calcite.adapter.pig">Project</a></th>
 <td class="colLast">
 <div class="block">Relational expression that computes a set of
  'select expressions' from its input relational expression.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.AggregateFactory.html#org.apache.calcite.adapter.pig">RelFactories.AggregateFactory</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.FilterFactory.html#org.apache.calcite.adapter.pig">RelFactories.FilterFactory</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.JoinFactory.html#org.apache.calcite.adapter.pig">RelFactories.JoinFactory</a></th>
 <td class="colLast">
 <div class="block">Can create a join of the appropriate type for a rule's calling convention.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.TableScanFactory.html#org.apache.calcite.adapter.pig">RelFactories.TableScanFactory</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/TableScan.html#org.apache.calcite.adapter.pig">TableScan</a></th>
 <td class="colLast">
 <div class="block">Relational operator that returns the contents of a table.</div>
 </td>
 </tr>
 </tbody>
 </table>
 </li>
 <li class="blockList"><a id="org.apache.calcite.adapter.spark">
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 <table class="useSummary">
 <caption><span>Classes in <a href="package-summary.html">org.apache.calcite.rel.core</a> used by <a href="../../adapter/spark/package-summary.html">org.apache.calcite.adapter.spark</a></span><span class="tabEnd">&nbsp;</span></caption>
 <tr>
 <th class="colFirst" scope="col">Class</th>
 <th class="colLast" scope="col">Description</th>
 </tr>
 <tbody>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Values.html#org.apache.calcite.adapter.spark">Values</a></th>
 <td class="colLast">
 <div class="block">Relational expression whose value is a sequence of zero or more literal row
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 </tbody>
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 </li>
 <li class="blockList"><a id="org.apache.calcite.adapter.splunk">
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 <table class="useSummary">
 <caption><span>Classes in <a href="package-summary.html">org.apache.calcite.rel.core</a> used by <a href="../../adapter/splunk/package-summary.html">org.apache.calcite.adapter.splunk</a></span><span class="tabEnd">&nbsp;</span></caption>
 <tr>
 <th class="colFirst" scope="col">Class</th>
 <th class="colLast" scope="col">Description</th>
 </tr>
 <tbody>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/TableScan.html#org.apache.calcite.adapter.splunk">TableScan</a></th>
 <td class="colLast">
 <div class="block">Relational operator that returns the contents of a table.</div>
 </td>
 </tr>
 </tbody>
 </table>
 </li>
 <li class="blockList"><a id="org.apache.calcite.interpreter">
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 </a>
 <table class="useSummary">
 <caption><span>Classes in <a href="package-summary.html">org.apache.calcite.rel.core</a> used by <a href="../../interpreter/package-summary.html">org.apache.calcite.interpreter</a></span><span class="tabEnd">&nbsp;</span></caption>
 <tr>
 <th class="colFirst" scope="col">Class</th>
 <th class="colLast" scope="col">Description</th>
 </tr>
 <tbody>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Aggregate.html#org.apache.calcite.interpreter">Aggregate</a></th>
 <td class="colLast">
 <div class="block">Relational operator that eliminates
  duplicates and computes totals.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/AggregateCall.html#org.apache.calcite.interpreter">AggregateCall</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/CorrelationId.html#org.apache.calcite.interpreter">CorrelationId</a></th>
 <td class="colLast">
 <div class="block">Describes the necessary parameters for an implementation in order to
  identify and set dynamic variables</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Filter.html#org.apache.calcite.interpreter">Filter</a></th>
 <td class="colLast">
 <div class="block">Relational expression that iterates over its input
  and returns elements for which <code>condition</code> evaluates to
  <code>true</code>.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Join.html#org.apache.calcite.interpreter">Join</a></th>
 <td class="colLast">
 <div class="block">Relational expression that combines two relational expressions according to
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 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/JoinRelType.html#org.apache.calcite.interpreter">JoinRelType</a></th>
 <td class="colLast">
 <div class="block">Enumeration of join types.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Match.html#org.apache.calcite.interpreter">Match</a></th>
 <td class="colLast">
 <div class="block">Relational expression that represent a MATCH_RECOGNIZE node.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Project.html#org.apache.calcite.interpreter">Project</a></th>
 <td class="colLast">
 <div class="block">Relational expression that computes a set of
  'select expressions' from its input relational expression.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/SetOp.html#org.apache.calcite.interpreter">SetOp</a></th>
 <td class="colLast">
 <div class="block"><code>SetOp</code> is an abstract base for relational set operators such
  as UNION, MINUS (aka EXCEPT), and INTERSECT.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Sort.html#org.apache.calcite.interpreter">Sort</a></th>
 <td class="colLast">
 <div class="block">Relational expression that imposes a particular sort order on its input
  without otherwise changing its content.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/TableScan.html#org.apache.calcite.interpreter">TableScan</a></th>
 <td class="colLast">
 <div class="block">Relational operator that returns the contents of a table.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Union.html#org.apache.calcite.interpreter">Union</a></th>
 <td class="colLast">
 <div class="block">Relational expression that returns the union of the rows of its inputs,
  optionally eliminating duplicates.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Values.html#org.apache.calcite.interpreter">Values</a></th>
 <td class="colLast">
 <div class="block">Relational expression whose value is a sequence of zero or more literal row
  values.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Window.html#org.apache.calcite.interpreter">Window</a></th>
 <td class="colLast">
 <div class="block">A relational expression representing a set of window aggregates.</div>
 </td>
 </tr>
 </tbody>
 </table>
 </li>
 <li class="blockList"><a id="org.apache.calcite.materialize">
 <!--   -->
 </a>
 <table class="useSummary">
 <caption><span>Classes in <a href="package-summary.html">org.apache.calcite.rel.core</a> used by <a href="../../materialize/package-summary.html">org.apache.calcite.materialize</a></span><span class="tabEnd">&nbsp;</span></caption>
 <tr>
 <th class="colFirst" scope="col">Class</th>
 <th class="colLast" scope="col">Description</th>
 </tr>
 <tbody>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/AggregateCall.html#org.apache.calcite.materialize">AggregateCall</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/TableScan.html#org.apache.calcite.materialize">TableScan</a></th>
 <td class="colLast">
 <div class="block">Relational operator that returns the contents of a table.</div>
 </td>
 </tr>
 </tbody>
 </table>
 </li>
 <li class="blockList"><a id="org.apache.calcite.piglet">
 <!--   -->
 </a>
 <table class="useSummary">
 <caption><span>Classes in <a href="package-summary.html">org.apache.calcite.rel.core</a> used by <a href="../../piglet/package-summary.html">org.apache.calcite.piglet</a></span><span class="tabEnd">&nbsp;</span></caption>
 <tr>
 <th class="colFirst" scope="col">Class</th>
 <th class="colLast" scope="col">Description</th>
 </tr>
 <tbody>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Aggregate.html#org.apache.calcite.piglet">Aggregate</a></th>
 <td class="colLast">
 <div class="block">Relational operator that eliminates
  duplicates and computes totals.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/CorrelationId.html#org.apache.calcite.piglet">CorrelationId</a></th>
 <td class="colLast">
 <div class="block">Describes the necessary parameters for an implementation in order to
  identify and set dynamic variables</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/JoinRelType.html#org.apache.calcite.piglet">JoinRelType</a></th>
 <td class="colLast">
 <div class="block">Enumeration of join types.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Window.html#org.apache.calcite.piglet">Window</a></th>
 <td class="colLast">
 <div class="block">A relational expression representing a set of window aggregates.</div>
 </td>
 </tr>
 </tbody>
 </table>
 </li>
 <li class="blockList"><a id="org.apache.calcite.plan">
 <!--   -->
 </a>
 <table class="useSummary">
 <caption><span>Classes in <a href="package-summary.html">org.apache.calcite.rel.core</a> used by <a href="../../plan/package-summary.html">org.apache.calcite.plan</a></span><span class="tabEnd">&nbsp;</span></caption>
 <tr>
 <th class="colFirst" scope="col">Class</th>
 <th class="colLast" scope="col">Description</th>
 </tr>
 <tbody>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Aggregate.html#org.apache.calcite.plan">Aggregate</a></th>
 <td class="colLast">
 <div class="block">Relational operator that eliminates
  duplicates and computes totals.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Calc.html#org.apache.calcite.plan">Calc</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/CorrelationId.html#org.apache.calcite.plan">CorrelationId</a></th>
 <td class="colLast">
 <div class="block">Describes the necessary parameters for an implementation in order to
  identify and set dynamic variables</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Filter.html#org.apache.calcite.plan">Filter</a></th>
 <td class="colLast">
 <div class="block">Relational expression that iterates over its input
  and returns elements for which <code>condition</code> evaluates to
  <code>true</code>.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Join.html#org.apache.calcite.plan">Join</a></th>
 <td class="colLast">
 <div class="block">Relational expression that combines two relational expressions according to
  some condition.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/JoinRelType.html#org.apache.calcite.plan">JoinRelType</a></th>
 <td class="colLast">
 <div class="block">Enumeration of join types.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Project.html#org.apache.calcite.plan">Project</a></th>
 <td class="colLast">
 <div class="block">Relational expression that computes a set of
  'select expressions' from its input relational expression.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.FilterFactory.html#org.apache.calcite.plan">RelFactories.FilterFactory</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.ProjectFactory.html#org.apache.calcite.plan">RelFactories.ProjectFactory</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/TableScan.html#org.apache.calcite.plan">TableScan</a></th>
 <td class="colLast">
 <div class="block">Relational operator that returns the contents of a table.</div>
 </td>
 </tr>
 </tbody>
 </table>
 </li>
 <li class="blockList"><a id="org.apache.calcite.plan.volcano">
 <!--   -->
 </a>
 <table class="useSummary">
 <caption><span>Classes in <a href="package-summary.html">org.apache.calcite.rel.core</a> used by <a href="../../plan/volcano/package-summary.html">org.apache.calcite.plan.volcano</a></span><span class="tabEnd">&nbsp;</span></caption>
 <tr>
 <th class="colFirst" scope="col">Class</th>
 <th class="colLast" scope="col">Description</th>
 </tr>
 <tbody>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/CorrelationId.html#org.apache.calcite.plan.volcano">CorrelationId</a></th>
 <td class="colLast">
 <div class="block">Describes the necessary parameters for an implementation in order to
  identify and set dynamic variables</div>
 </td>
 </tr>
 </tbody>
 </table>
 </li>
 <li class="blockList"><a id="org.apache.calcite.prepare">
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 </a>
 <table class="useSummary">
 <caption><span>Classes in <a href="package-summary.html">org.apache.calcite.rel.core</a> used by <a href="../../prepare/package-summary.html">org.apache.calcite.prepare</a></span><span class="tabEnd">&nbsp;</span></caption>
 <tr>
 <th class="colFirst" scope="col">Class</th>
 <th class="colLast" scope="col">Description</th>
 </tr>
 <tbody>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/TableFunctionScan.html#org.apache.calcite.prepare">TableFunctionScan</a></th>
 <td class="colLast">
 <div class="block">Relational expression that calls a table-valued function.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/TableModify.Operation.html#org.apache.calcite.prepare">TableModify.Operation</a></th>
 <td class="colLast">
 <div class="block">Enumeration of supported modification operations.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/TableScan.html#org.apache.calcite.prepare">TableScan</a></th>
 <td class="colLast">
 <div class="block">Relational operator that returns the contents of a table.</div>
 </td>
 </tr>
 </tbody>
 </table>
 </li>
 <li class="blockList"><a id="org.apache.calcite.rel">
 <!--   -->
 </a>
 <table class="useSummary">
 <caption><span>Classes in <a href="package-summary.html">org.apache.calcite.rel.core</a> used by <a href="../package-summary.html">org.apache.calcite.rel</a></span><span class="tabEnd">&nbsp;</span></caption>
 <tr>
 <th class="colFirst" scope="col">Class</th>
 <th class="colLast" scope="col">Description</th>
 </tr>
 <tbody>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/AggregateCall.html#org.apache.calcite.rel">AggregateCall</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/CorrelationId.html#org.apache.calcite.rel">CorrelationId</a></th>
 <td class="colLast">
 <div class="block">Describes the necessary parameters for an implementation in order to
  identify and set dynamic variables</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/TableFunctionScan.html#org.apache.calcite.rel">TableFunctionScan</a></th>
 <td class="colLast">
 <div class="block">Relational expression that calls a table-valued function.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/TableScan.html#org.apache.calcite.rel">TableScan</a></th>
 <td class="colLast">
 <div class="block">Relational operator that returns the contents of a table.</div>
 </td>
 </tr>
 </tbody>
 </table>
 </li>
 <li class="blockList"><a id="org.apache.calcite.rel.core">
 <!--   -->
 </a>
 <table class="useSummary">
 <caption><span>Classes in <a href="package-summary.html">org.apache.calcite.rel.core</a> used by <a href="package-summary.html">org.apache.calcite.rel.core</a></span><span class="tabEnd">&nbsp;</span></caption>
 <tr>
 <th class="colFirst" scope="col">Class</th>
 <th class="colLast" scope="col">Description</th>
 </tr>
 <tbody>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Aggregate.html#org.apache.calcite.rel.core">Aggregate</a></th>
 <td class="colLast">
 <div class="block">Relational operator that eliminates
  duplicates and computes totals.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Aggregate.AggCallBinding.html#org.apache.calcite.rel.core">Aggregate.AggCallBinding</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Aggregate.Group.html#org.apache.calcite.rel.core">Aggregate.Group</a></th>
 <td class="colLast">
 <div class="block">What kind of roll-up is it?</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/AggregateCall.html#org.apache.calcite.rel.core">AggregateCall</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Calc.html#org.apache.calcite.rel.core">Calc</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Correlate.html#org.apache.calcite.rel.core">Correlate</a></th>
 <td class="colLast">
 <div class="block">A relational operator that performs nested-loop joins.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/CorrelationId.html#org.apache.calcite.rel.core">CorrelationId</a></th>
 <td class="colLast">
 <div class="block">Describes the necessary parameters for an implementation in order to
  identify and set dynamic variables</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Exchange.html#org.apache.calcite.rel.core">Exchange</a></th>
 <td class="colLast">
 <div class="block">Relational expression that imposes a particular distribution on its input
  without otherwise changing its content.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Filter.html#org.apache.calcite.rel.core">Filter</a></th>
 <td class="colLast">
 <div class="block">Relational expression that iterates over its input
  and returns elements for which <code>condition</code> evaluates to
  <code>true</code>.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Join.html#org.apache.calcite.rel.core">Join</a></th>
 <td class="colLast">
 <div class="block">Relational expression that combines two relational expressions according to
  some condition.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/JoinInfo.html#org.apache.calcite.rel.core">JoinInfo</a></th>
 <td class="colLast">
 <div class="block">An analyzed join condition.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/JoinRelType.html#org.apache.calcite.rel.core">JoinRelType</a></th>
 <td class="colLast">
 <div class="block">Enumeration of join types.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Match.RexMRAggCall.html#org.apache.calcite.rel.core">Match.RexMRAggCall</a></th>
 <td class="colLast">
 <div class="block">Aggregate calls in match recognize.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Project.html#org.apache.calcite.rel.core">Project</a></th>
 <td class="colLast">
 <div class="block">Relational expression that computes a set of
  'select expressions' from its input relational expression.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.AggregateFactory.html#org.apache.calcite.rel.core">RelFactories.AggregateFactory</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.CorrelateFactory.html#org.apache.calcite.rel.core">RelFactories.CorrelateFactory</a></th>
 <td class="colLast">
 <div class="block">Can create a correlate of the appropriate type for a rule's calling
  convention.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.ExchangeFactory.html#org.apache.calcite.rel.core">RelFactories.ExchangeFactory</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.FilterFactory.html#org.apache.calcite.rel.core">RelFactories.FilterFactory</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.JoinFactory.html#org.apache.calcite.rel.core">RelFactories.JoinFactory</a></th>
 <td class="colLast">
 <div class="block">Can create a join of the appropriate type for a rule's calling convention.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.MatchFactory.html#org.apache.calcite.rel.core">RelFactories.MatchFactory</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.ProjectFactory.html#org.apache.calcite.rel.core">RelFactories.ProjectFactory</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.RepeatUnionFactory.html#org.apache.calcite.rel.core">RelFactories.RepeatUnionFactory</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.SemiJoinFactory.html#org.apache.calcite.rel.core">RelFactories.SemiJoinFactory</a></th>
 <td class="colLast">
 <div class="block"><span class="deprecatedLabel">Deprecated.</span>
 <div class="deprecationComment">Use <a href="RelFactories.JoinFactory.html" title="interface in org.apache.calcite.rel.core"><code>RelFactories.JoinFactory</code></a> instead.</div>
 </div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.SetOpFactory.html#org.apache.calcite.rel.core">RelFactories.SetOpFactory</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.SnapshotFactory.html#org.apache.calcite.rel.core">RelFactories.SnapshotFactory</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.SortExchangeFactory.html#org.apache.calcite.rel.core">RelFactories.SortExchangeFactory</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.SortFactory.html#org.apache.calcite.rel.core">RelFactories.SortFactory</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.SpoolFactory.html#org.apache.calcite.rel.core">RelFactories.SpoolFactory</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.TableFunctionScanFactory.html#org.apache.calcite.rel.core">RelFactories.TableFunctionScanFactory</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.TableScanFactory.html#org.apache.calcite.rel.core">RelFactories.TableScanFactory</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.ValuesFactory.html#org.apache.calcite.rel.core">RelFactories.ValuesFactory</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/SetOp.html#org.apache.calcite.rel.core">SetOp</a></th>
 <td class="colLast">
 <div class="block"><code>SetOp</code> is an abstract base for relational set operators such
  as UNION, MINUS (aka EXCEPT), and INTERSECT.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Snapshot.html#org.apache.calcite.rel.core">Snapshot</a></th>
 <td class="colLast">
 <div class="block">Relational expression that returns the contents of a relation expression as
  it was at a given time in the past.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Sort.html#org.apache.calcite.rel.core">Sort</a></th>
 <td class="colLast">
 <div class="block">Relational expression that imposes a particular sort order on its input
  without otherwise changing its content.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/SortExchange.html#org.apache.calcite.rel.core">SortExchange</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Spool.html#org.apache.calcite.rel.core">Spool</a></th>
 <td class="colLast">
 <div class="block">Relational expression that iterates over its input and, in addition to
  returning its results, will forward them into other consumers.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Spool.Type.html#org.apache.calcite.rel.core">Spool.Type</a></th>
 <td class="colLast">
 <div class="block">Enumeration representing spool read / write type.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/TableFunctionScan.html#org.apache.calcite.rel.core">TableFunctionScan</a></th>
 <td class="colLast">
 <div class="block">Relational expression that calls a table-valued function.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/TableModify.Operation.html#org.apache.calcite.rel.core">TableModify.Operation</a></th>
 <td class="colLast">
 <div class="block">Enumeration of supported modification operations.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Uncollect.html#org.apache.calcite.rel.core">Uncollect</a></th>
 <td class="colLast">
 <div class="block">Relational expression that unnests its input's columns into a relation.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Values.html#org.apache.calcite.rel.core">Values</a></th>
 <td class="colLast">
 <div class="block">Relational expression whose value is a sequence of zero or more literal row
  values.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Window.html#org.apache.calcite.rel.core">Window</a></th>
 <td class="colLast">
 <div class="block">A relational expression representing a set of window aggregates.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Window.Group.html#org.apache.calcite.rel.core">Window.Group</a></th>
 <td class="colLast">
 <div class="block">Group of windowed aggregate calls that have the same window specification.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Window.RexWinAggCall.html#org.apache.calcite.rel.core">Window.RexWinAggCall</a></th>
 <td class="colLast">
 <div class="block">A call to a windowed aggregate function.</div>
 </td>
 </tr>
 </tbody>
 </table>
 </li>
 <li class="blockList"><a id="org.apache.calcite.rel.externalize">
 <!--   -->
 </a>
 <table class="useSummary">
 <caption><span>Classes in <a href="package-summary.html">org.apache.calcite.rel.core</a> used by <a href="../externalize/package-summary.html">org.apache.calcite.rel.externalize</a></span><span class="tabEnd">&nbsp;</span></caption>
 <tr>
 <th class="colFirst" scope="col">Class</th>
 <th class="colLast" scope="col">Description</th>
 </tr>
 <tbody>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/AggregateCall.html#org.apache.calcite.rel.externalize">AggregateCall</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/CorrelationId.html#org.apache.calcite.rel.externalize">CorrelationId</a></th>
 <td class="colLast">
 <div class="block">Describes the necessary parameters for an implementation in order to
  identify and set dynamic variables</div>
 </td>
 </tr>
 </tbody>
 </table>
 </li>
 <li class="blockList"><a id="org.apache.calcite.rel.logical">
 <!--   -->
 </a>
 <table class="useSummary">
 <caption><span>Classes in <a href="package-summary.html">org.apache.calcite.rel.core</a> used by <a href="../logical/package-summary.html">org.apache.calcite.rel.logical</a></span><span class="tabEnd">&nbsp;</span></caption>
 <tr>
 <th class="colFirst" scope="col">Class</th>
 <th class="colLast" scope="col">Description</th>
 </tr>
 <tbody>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Aggregate.html#org.apache.calcite.rel.logical">Aggregate</a></th>
 <td class="colLast">
 <div class="block">Relational operator that eliminates
  duplicates and computes totals.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Calc.html#org.apache.calcite.rel.logical">Calc</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Correlate.html#org.apache.calcite.rel.logical">Correlate</a></th>
 <td class="colLast">
 <div class="block">A relational operator that performs nested-loop joins.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/CorrelationId.html#org.apache.calcite.rel.logical">CorrelationId</a></th>
 <td class="colLast">
 <div class="block">Describes the necessary parameters for an implementation in order to
  identify and set dynamic variables</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Exchange.html#org.apache.calcite.rel.logical">Exchange</a></th>
 <td class="colLast">
 <div class="block">Relational expression that imposes a particular distribution on its input
  without otherwise changing its content.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Filter.html#org.apache.calcite.rel.logical">Filter</a></th>
 <td class="colLast">
 <div class="block">Relational expression that iterates over its input
  and returns elements for which <code>condition</code> evaluates to
  <code>true</code>.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Intersect.html#org.apache.calcite.rel.logical">Intersect</a></th>
 <td class="colLast">
 <div class="block">Relational expression that returns the intersection of the rows of its
  inputs.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Join.html#org.apache.calcite.rel.logical">Join</a></th>
 <td class="colLast">
 <div class="block">Relational expression that combines two relational expressions according to
  some condition.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/JoinRelType.html#org.apache.calcite.rel.logical">JoinRelType</a></th>
 <td class="colLast">
 <div class="block">Enumeration of join types.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Match.html#org.apache.calcite.rel.logical">Match</a></th>
 <td class="colLast">
 <div class="block">Relational expression that represent a MATCH_RECOGNIZE node.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Minus.html#org.apache.calcite.rel.logical">Minus</a></th>
 <td class="colLast">
 <div class="block">Relational expression that returns the rows of its first input minus any
  matching rows from its other inputs.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Project.html#org.apache.calcite.rel.logical">Project</a></th>
 <td class="colLast">
 <div class="block">Relational expression that computes a set of
  'select expressions' from its input relational expression.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RepeatUnion.html#org.apache.calcite.rel.logical">RepeatUnion</a></th>
 <td class="colLast">
 <div class="block">Relational expression that computes a repeat union (recursive union in SQL
  terminology).</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/SetOp.html#org.apache.calcite.rel.logical">SetOp</a></th>
 <td class="colLast">
 <div class="block"><code>SetOp</code> is an abstract base for relational set operators such
  as UNION, MINUS (aka EXCEPT), and INTERSECT.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Snapshot.html#org.apache.calcite.rel.logical">Snapshot</a></th>
 <td class="colLast">
 <div class="block">Relational expression that returns the contents of a relation expression as
  it was at a given time in the past.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Sort.html#org.apache.calcite.rel.logical">Sort</a></th>
 <td class="colLast">
 <div class="block">Relational expression that imposes a particular sort order on its input
  without otherwise changing its content.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/SortExchange.html#org.apache.calcite.rel.logical">SortExchange</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Spool.html#org.apache.calcite.rel.logical">Spool</a></th>
 <td class="colLast">
 <div class="block">Relational expression that iterates over its input and, in addition to
  returning its results, will forward them into other consumers.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Spool.Type.html#org.apache.calcite.rel.logical">Spool.Type</a></th>
 <td class="colLast">
 <div class="block">Enumeration representing spool read / write type.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/TableFunctionScan.html#org.apache.calcite.rel.logical">TableFunctionScan</a></th>
 <td class="colLast">
 <div class="block">Relational expression that calls a table-valued function.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/TableModify.html#org.apache.calcite.rel.logical">TableModify</a></th>
 <td class="colLast">
 <div class="block">Relational expression that modifies a table.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/TableModify.Operation.html#org.apache.calcite.rel.logical">TableModify.Operation</a></th>
 <td class="colLast">
 <div class="block">Enumeration of supported modification operations.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/TableScan.html#org.apache.calcite.rel.logical">TableScan</a></th>
 <td class="colLast">
 <div class="block">Relational operator that returns the contents of a table.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/TableSpool.html#org.apache.calcite.rel.logical">TableSpool</a></th>
 <td class="colLast">
 <div class="block">Spool that writes into a table.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Union.html#org.apache.calcite.rel.logical">Union</a></th>
 <td class="colLast">
 <div class="block">Relational expression that returns the union of the rows of its inputs,
  optionally eliminating duplicates.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Values.html#org.apache.calcite.rel.logical">Values</a></th>
 <td class="colLast">
 <div class="block">Relational expression whose value is a sequence of zero or more literal row
  values.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Window.html#org.apache.calcite.rel.logical">Window</a></th>
 <td class="colLast">
 <div class="block">A relational expression representing a set of window aggregates.</div>
 </td>
 </tr>
 </tbody>
 </table>
 </li>
 <li class="blockList"><a id="org.apache.calcite.rel.metadata">
 <!--   -->
 </a>
 <table class="useSummary">
 <caption><span>Classes in <a href="package-summary.html">org.apache.calcite.rel.core</a> used by <a href="../metadata/package-summary.html">org.apache.calcite.rel.metadata</a></span><span class="tabEnd">&nbsp;</span></caption>
 <tr>
 <th class="colFirst" scope="col">Class</th>
 <th class="colLast" scope="col">Description</th>
 </tr>
 <tbody>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Aggregate.html#org.apache.calcite.rel.metadata">Aggregate</a></th>
 <td class="colLast">
 <div class="block">Relational operator that eliminates
  duplicates and computes totals.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Calc.html#org.apache.calcite.rel.metadata">Calc</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Correlate.html#org.apache.calcite.rel.metadata">Correlate</a></th>
 <td class="colLast">
 <div class="block">A relational operator that performs nested-loop joins.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Exchange.html#org.apache.calcite.rel.metadata">Exchange</a></th>
 <td class="colLast">
 <div class="block">Relational expression that imposes a particular distribution on its input
  without otherwise changing its content.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Filter.html#org.apache.calcite.rel.metadata">Filter</a></th>
 <td class="colLast">
 <div class="block">Relational expression that iterates over its input
  and returns elements for which <code>condition</code> evaluates to
  <code>true</code>.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Intersect.html#org.apache.calcite.rel.metadata">Intersect</a></th>
 <td class="colLast">
 <div class="block">Relational expression that returns the intersection of the rows of its
  inputs.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Join.html#org.apache.calcite.rel.metadata">Join</a></th>
 <td class="colLast">
 <div class="block">Relational expression that combines two relational expressions according to
  some condition.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/JoinRelType.html#org.apache.calcite.rel.metadata">JoinRelType</a></th>
 <td class="colLast">
 <div class="block">Enumeration of join types.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Match.html#org.apache.calcite.rel.metadata">Match</a></th>
 <td class="colLast">
 <div class="block">Relational expression that represent a MATCH_RECOGNIZE node.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Minus.html#org.apache.calcite.rel.metadata">Minus</a></th>
 <td class="colLast">
 <div class="block">Relational expression that returns the rows of its first input minus any
  matching rows from its other inputs.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Project.html#org.apache.calcite.rel.metadata">Project</a></th>
 <td class="colLast">
 <div class="block">Relational expression that computes a set of
  'select expressions' from its input relational expression.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/SetOp.html#org.apache.calcite.rel.metadata">SetOp</a></th>
 <td class="colLast">
 <div class="block"><code>SetOp</code> is an abstract base for relational set operators such
  as UNION, MINUS (aka EXCEPT), and INTERSECT.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Sort.html#org.apache.calcite.rel.metadata">Sort</a></th>
 <td class="colLast">
 <div class="block">Relational expression that imposes a particular sort order on its input
  without otherwise changing its content.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/SortExchange.html#org.apache.calcite.rel.metadata">SortExchange</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/TableFunctionScan.html#org.apache.calcite.rel.metadata">TableFunctionScan</a></th>
 <td class="colLast">
 <div class="block">Relational expression that calls a table-valued function.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/TableScan.html#org.apache.calcite.rel.metadata">TableScan</a></th>
 <td class="colLast">
 <div class="block">Relational operator that returns the contents of a table.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Union.html#org.apache.calcite.rel.metadata">Union</a></th>
 <td class="colLast">
 <div class="block">Relational expression that returns the union of the rows of its inputs,
  optionally eliminating duplicates.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Values.html#org.apache.calcite.rel.metadata">Values</a></th>
 <td class="colLast">
 <div class="block">Relational expression whose value is a sequence of zero or more literal row
  values.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Window.html#org.apache.calcite.rel.metadata">Window</a></th>
 <td class="colLast">
 <div class="block">A relational expression representing a set of window aggregates.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Window.Group.html#org.apache.calcite.rel.metadata">Window.Group</a></th>
 <td class="colLast">
 <div class="block">Group of windowed aggregate calls that have the same window specification.</div>
 </td>
 </tr>
 </tbody>
 </table>
 </li>
 <li class="blockList"><a id="org.apache.calcite.rel.mutable">
 <!--   -->
 </a>
 <table class="useSummary">
 <caption><span>Classes in <a href="package-summary.html">org.apache.calcite.rel.core</a> used by <a href="../mutable/package-summary.html">org.apache.calcite.rel.mutable</a></span><span class="tabEnd">&nbsp;</span></caption>
 <tr>
 <th class="colFirst" scope="col">Class</th>
 <th class="colLast" scope="col">Description</th>
 </tr>
 <tbody>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Aggregate.Group.html#org.apache.calcite.rel.mutable">Aggregate.Group</a></th>
 <td class="colLast">
 <div class="block">What kind of roll-up is it?</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/AggregateCall.html#org.apache.calcite.rel.mutable">AggregateCall</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/CorrelationId.html#org.apache.calcite.rel.mutable">CorrelationId</a></th>
 <td class="colLast">
 <div class="block">Describes the necessary parameters for an implementation in order to
  identify and set dynamic variables</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/JoinRelType.html#org.apache.calcite.rel.mutable">JoinRelType</a></th>
 <td class="colLast">
 <div class="block">Enumeration of join types.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/TableModify.Operation.html#org.apache.calcite.rel.mutable">TableModify.Operation</a></th>
 <td class="colLast">
 <div class="block">Enumeration of supported modification operations.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/TableScan.html#org.apache.calcite.rel.mutable">TableScan</a></th>
 <td class="colLast">
 <div class="block">Relational operator that returns the contents of a table.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Values.html#org.apache.calcite.rel.mutable">Values</a></th>
 <td class="colLast">
 <div class="block">Relational expression whose value is a sequence of zero or more literal row
  values.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Window.Group.html#org.apache.calcite.rel.mutable">Window.Group</a></th>
 <td class="colLast">
 <div class="block">Group of windowed aggregate calls that have the same window specification.</div>
 </td>
 </tr>
 </tbody>
 </table>
 </li>
 <li class="blockList"><a id="org.apache.calcite.rel.rel2sql">
 <!--   -->
 </a>
 <table class="useSummary">
 <caption><span>Classes in <a href="package-summary.html">org.apache.calcite.rel.core</a> used by <a href="../rel2sql/package-summary.html">org.apache.calcite.rel.rel2sql</a></span><span class="tabEnd">&nbsp;</span></caption>
 <tr>
 <th class="colFirst" scope="col">Class</th>
 <th class="colLast" scope="col">Description</th>
 </tr>
 <tbody>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Aggregate.html#org.apache.calcite.rel.rel2sql">Aggregate</a></th>
 <td class="colLast">
 <div class="block">Relational operator that eliminates
  duplicates and computes totals.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/AggregateCall.html#org.apache.calcite.rel.rel2sql">AggregateCall</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Calc.html#org.apache.calcite.rel.rel2sql">Calc</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Correlate.html#org.apache.calcite.rel.rel2sql">Correlate</a></th>
 <td class="colLast">
 <div class="block">A relational operator that performs nested-loop joins.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/CorrelationId.html#org.apache.calcite.rel.rel2sql">CorrelationId</a></th>
 <td class="colLast">
 <div class="block">Describes the necessary parameters for an implementation in order to
  identify and set dynamic variables</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Filter.html#org.apache.calcite.rel.rel2sql">Filter</a></th>
 <td class="colLast">
 <div class="block">Relational expression that iterates over its input
  and returns elements for which <code>condition</code> evaluates to
  <code>true</code>.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Intersect.html#org.apache.calcite.rel.rel2sql">Intersect</a></th>
 <td class="colLast">
 <div class="block">Relational expression that returns the intersection of the rows of its
  inputs.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Join.html#org.apache.calcite.rel.rel2sql">Join</a></th>
 <td class="colLast">
 <div class="block">Relational expression that combines two relational expressions according to
  some condition.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/JoinRelType.html#org.apache.calcite.rel.rel2sql">JoinRelType</a></th>
 <td class="colLast">
 <div class="block">Enumeration of join types.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Match.html#org.apache.calcite.rel.rel2sql">Match</a></th>
 <td class="colLast">
 <div class="block">Relational expression that represent a MATCH_RECOGNIZE node.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Minus.html#org.apache.calcite.rel.rel2sql">Minus</a></th>
 <td class="colLast">
 <div class="block">Relational expression that returns the rows of its first input minus any
  matching rows from its other inputs.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Project.html#org.apache.calcite.rel.rel2sql">Project</a></th>
 <td class="colLast">
 <div class="block">Relational expression that computes a set of
  'select expressions' from its input relational expression.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Sort.html#org.apache.calcite.rel.rel2sql">Sort</a></th>
 <td class="colLast">
 <div class="block">Relational expression that imposes a particular sort order on its input
  without otherwise changing its content.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/TableModify.html#org.apache.calcite.rel.rel2sql">TableModify</a></th>
 <td class="colLast">
 <div class="block">Relational expression that modifies a table.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/TableScan.html#org.apache.calcite.rel.rel2sql">TableScan</a></th>
 <td class="colLast">
 <div class="block">Relational operator that returns the contents of a table.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Uncollect.html#org.apache.calcite.rel.rel2sql">Uncollect</a></th>
 <td class="colLast">
 <div class="block">Relational expression that unnests its input's columns into a relation.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Union.html#org.apache.calcite.rel.rel2sql">Union</a></th>
 <td class="colLast">
 <div class="block">Relational expression that returns the union of the rows of its inputs,
  optionally eliminating duplicates.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Values.html#org.apache.calcite.rel.rel2sql">Values</a></th>
 <td class="colLast">
 <div class="block">Relational expression whose value is a sequence of zero or more literal row
  values.</div>
 </td>
 </tr>
 </tbody>
 </table>
 </li>
 <li class="blockList"><a id="org.apache.calcite.rel.rules">
 <!--   -->
 </a>
 <table class="useSummary">
 <caption><span>Classes in <a href="package-summary.html">org.apache.calcite.rel.core</a> used by <a href="../rules/package-summary.html">org.apache.calcite.rel.rules</a></span><span class="tabEnd">&nbsp;</span></caption>
 <tr>
 <th class="colFirst" scope="col">Class</th>
 <th class="colLast" scope="col">Description</th>
 </tr>
 <tbody>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Aggregate.html#org.apache.calcite.rel.rules">Aggregate</a></th>
 <td class="colLast">
 <div class="block">Relational operator that eliminates
  duplicates and computes totals.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/AggregateCall.html#org.apache.calcite.rel.rules">AggregateCall</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Calc.html#org.apache.calcite.rel.rules">Calc</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/CorrelationId.html#org.apache.calcite.rel.rules">CorrelationId</a></th>
 <td class="colLast">
 <div class="block">Describes the necessary parameters for an implementation in order to
  identify and set dynamic variables</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/EquiJoin.html#org.apache.calcite.rel.rules">EquiJoin</a></th>
 <td class="colLast">
 <div class="block"><span class="deprecatedLabel">Deprecated.</span>
 <div class="deprecationComment">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>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Filter.html#org.apache.calcite.rel.rules">Filter</a></th>
 <td class="colLast">
 <div class="block">Relational expression that iterates over its input
  and returns elements for which <code>condition</code> evaluates to
  <code>true</code>.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Intersect.html#org.apache.calcite.rel.rules">Intersect</a></th>
 <td class="colLast">
 <div class="block">Relational expression that returns the intersection of the rows of its
  inputs.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Join.html#org.apache.calcite.rel.rules">Join</a></th>
 <td class="colLast">
 <div class="block">Relational expression that combines two relational expressions according to
  some condition.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/JoinRelType.html#org.apache.calcite.rel.rules">JoinRelType</a></th>
 <td class="colLast">
 <div class="block">Enumeration of join types.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Project.html#org.apache.calcite.rel.rules">Project</a></th>
 <td class="colLast">
 <div class="block">Relational expression that computes a set of
  'select expressions' from its input relational expression.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.AggregateFactory.html#org.apache.calcite.rel.rules">RelFactories.AggregateFactory</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.FilterFactory.html#org.apache.calcite.rel.rules">RelFactories.FilterFactory</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.JoinFactory.html#org.apache.calcite.rel.rules">RelFactories.JoinFactory</a></th>
 <td class="colLast">
 <div class="block">Can create a join of the appropriate type for a rule's calling convention.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.ProjectFactory.html#org.apache.calcite.rel.rules">RelFactories.ProjectFactory</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.SetOpFactory.html#org.apache.calcite.rel.rules">RelFactories.SetOpFactory</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/SetOp.html#org.apache.calcite.rel.rules">SetOp</a></th>
 <td class="colLast">
 <div class="block"><code>SetOp</code> is an abstract base for relational set operators such
  as UNION, MINUS (aka EXCEPT), and INTERSECT.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Sort.html#org.apache.calcite.rel.rules">Sort</a></th>
 <td class="colLast">
 <div class="block">Relational expression that imposes a particular sort order on its input
  without otherwise changing its content.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/TableScan.html#org.apache.calcite.rel.rules">TableScan</a></th>
 <td class="colLast">
 <div class="block">Relational operator that returns the contents of a table.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Union.html#org.apache.calcite.rel.rules">Union</a></th>
 <td class="colLast">
 <div class="block">Relational expression that returns the union of the rows of its inputs,
  optionally eliminating duplicates.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Window.html#org.apache.calcite.rel.rules">Window</a></th>
 <td class="colLast">
 <div class="block">A relational expression representing a set of window aggregates.</div>
 </td>
 </tr>
 </tbody>
 </table>
 </li>
 <li class="blockList"><a id="org.apache.calcite.rex">
 <!--   -->
 </a>
 <table class="useSummary">
 <caption><span>Classes in <a href="package-summary.html">org.apache.calcite.rel.core</a> used by <a href="../../rex/package-summary.html">org.apache.calcite.rex</a></span><span class="tabEnd">&nbsp;</span></caption>
 <tr>
 <th class="colFirst" scope="col">Class</th>
 <th class="colLast" scope="col">Description</th>
 </tr>
 <tbody>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/AggregateCall.html#org.apache.calcite.rex">AggregateCall</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/CorrelationId.html#org.apache.calcite.rex">CorrelationId</a></th>
 <td class="colLast">
 <div class="block">Describes the necessary parameters for an implementation in order to
  identify and set dynamic variables</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Filter.html#org.apache.calcite.rex">Filter</a></th>
 <td class="colLast">
 <div class="block">Relational expression that iterates over its input
  and returns elements for which <code>condition</code> evaluates to
  <code>true</code>.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Join.html#org.apache.calcite.rex">Join</a></th>
 <td class="colLast">
 <div class="block">Relational expression that combines two relational expressions according to
  some condition.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Project.html#org.apache.calcite.rex">Project</a></th>
 <td class="colLast">
 <div class="block">Relational expression that computes a set of
  'select expressions' from its input relational expression.</div>
 </td>
 </tr>
 </tbody>
 </table>
 </li>
 <li class="blockList"><a id="org.apache.calcite.schema">
 <!--   -->
 </a>
 <table class="useSummary">
 <caption><span>Classes in <a href="package-summary.html">org.apache.calcite.rel.core</a> used by <a href="../../schema/package-summary.html">org.apache.calcite.schema</a></span><span class="tabEnd">&nbsp;</span></caption>
 <tr>
 <th class="colFirst" scope="col">Class</th>
 <th class="colLast" scope="col">Description</th>
 </tr>
 <tbody>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/TableModify.html#org.apache.calcite.schema">TableModify</a></th>
 <td class="colLast">
 <div class="block">Relational expression that modifies a table.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/TableModify.Operation.html#org.apache.calcite.schema">TableModify.Operation</a></th>
 <td class="colLast">
 <div class="block">Enumeration of supported modification operations.</div>
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 <tr>
 <th class="colFirst" scope="col">Class</th>
 <th class="colLast" scope="col">Description</th>
 </tr>
 <tbody>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/TableModify.html#org.apache.calcite.schema.impl">TableModify</a></th>
 <td class="colLast">
 <div class="block">Relational expression that modifies a table.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/TableModify.Operation.html#org.apache.calcite.schema.impl">TableModify.Operation</a></th>
 <td class="colLast">
 <div class="block">Enumeration of supported modification operations.</div>
 </td>
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 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/TableScan.html#org.apache.calcite.schema.impl">TableScan</a></th>
 <td class="colLast">
 <div class="block">Relational operator that returns the contents of a table.</div>
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 <tr>
 <th class="colFirst" scope="col">Class</th>
 <th class="colLast" scope="col">Description</th>
 </tr>
 <tbody>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/AggregateCall.html#org.apache.calcite.sql">AggregateCall</a></th>
 <td class="colLast">
 <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>
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 <tr>
 <th class="colFirst" scope="col">Class</th>
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 </tr>
 <tbody>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/TableModify.html#org.apache.calcite.sql.ddl">TableModify</a></th>
 <td class="colLast">
 <div class="block">Relational expression that modifies a table.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/TableModify.Operation.html#org.apache.calcite.sql.ddl">TableModify.Operation</a></th>
 <td class="colLast">
 <div class="block">Enumeration of supported modification operations.</div>
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 <tr>
 <th class="colFirst" scope="col">Class</th>
 <th class="colLast" scope="col">Description</th>
 </tr>
 <tbody>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/JoinRelType.html#org.apache.calcite.sql.validate">JoinRelType</a></th>
 <td class="colLast">
 <div class="block">Enumeration of join types.</div>
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 <tr>
 <th class="colFirst" scope="col">Class</th>
 <th class="colLast" scope="col">Description</th>
 </tr>
 <tbody>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Aggregate.html#org.apache.calcite.sql2rel">Aggregate</a></th>
 <td class="colLast">
 <div class="block">Relational operator that eliminates
  duplicates and computes totals.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/AggregateCall.html#org.apache.calcite.sql2rel">AggregateCall</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Collect.html#org.apache.calcite.sql2rel">Collect</a></th>
 <td class="colLast">
 <div class="block">A relational expression that collapses multiple rows into one.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Correlate.html#org.apache.calcite.sql2rel">Correlate</a></th>
 <td class="colLast">
 <div class="block">A relational operator that performs nested-loop joins.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/CorrelationId.html#org.apache.calcite.sql2rel">CorrelationId</a></th>
 <td class="colLast">
 <div class="block">Describes the necessary parameters for an implementation in order to
  identify and set dynamic variables</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Filter.html#org.apache.calcite.sql2rel">Filter</a></th>
 <td class="colLast">
 <div class="block">Relational expression that iterates over its input
  and returns elements for which <code>condition</code> evaluates to
  <code>true</code>.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Join.html#org.apache.calcite.sql2rel">Join</a></th>
 <td class="colLast">
 <div class="block">Relational expression that combines two relational expressions according to
  some condition.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/JoinRelType.html#org.apache.calcite.sql2rel">JoinRelType</a></th>
 <td class="colLast">
 <div class="block">Enumeration of join types.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Project.html#org.apache.calcite.sql2rel">Project</a></th>
 <td class="colLast">
 <div class="block">Relational expression that computes a set of
  'select expressions' from its input relational expression.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.AggregateFactory.html#org.apache.calcite.sql2rel">RelFactories.AggregateFactory</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.FilterFactory.html#org.apache.calcite.sql2rel">RelFactories.FilterFactory</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.JoinFactory.html#org.apache.calcite.sql2rel">RelFactories.JoinFactory</a></th>
 <td class="colLast">
 <div class="block">Can create a join of the appropriate type for a rule's calling convention.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.ProjectFactory.html#org.apache.calcite.sql2rel">RelFactories.ProjectFactory</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.SetOpFactory.html#org.apache.calcite.sql2rel">RelFactories.SetOpFactory</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.SortFactory.html#org.apache.calcite.sql2rel">RelFactories.SortFactory</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Sample.html#org.apache.calcite.sql2rel">Sample</a></th>
 <td class="colLast">
 <div class="block">Relational expression that returns a sample of the rows from its input.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/SetOp.html#org.apache.calcite.sql2rel">SetOp</a></th>
 <td class="colLast">
 <div class="block"><code>SetOp</code> is an abstract base for relational set operators such
  as UNION, MINUS (aka EXCEPT), and INTERSECT.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Sort.html#org.apache.calcite.sql2rel">Sort</a></th>
 <td class="colLast">
 <div class="block">Relational expression that imposes a particular sort order on its input
  without otherwise changing its content.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/TableScan.html#org.apache.calcite.sql2rel">TableScan</a></th>
 <td class="colLast">
 <div class="block">Relational operator that returns the contents of a table.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Uncollect.html#org.apache.calcite.sql2rel">Uncollect</a></th>
 <td class="colLast">
 <div class="block">Relational expression that unnests its input's columns into a relation.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/Values.html#org.apache.calcite.sql2rel">Values</a></th>
 <td class="colLast">
 <div class="block">Relational expression whose value is a sequence of zero or more literal row
  values.</div>
 </td>
 </tr>
 </tbody>
 </table>
 </li>
 <li class="blockList"><a id="org.apache.calcite.tools">
 <!--   -->
 </a>
 <table class="useSummary">
 <caption><span>Classes in <a href="package-summary.html">org.apache.calcite.rel.core</a> used by <a href="../../tools/package-summary.html">org.apache.calcite.tools</a></span><span class="tabEnd">&nbsp;</span></caption>
 <tr>
 <th class="colFirst" scope="col">Class</th>
 <th class="colLast" scope="col">Description</th>
 </tr>
 <tbody>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/AggregateCall.html#org.apache.calcite.tools">AggregateCall</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/CorrelationId.html#org.apache.calcite.tools">CorrelationId</a></th>
 <td class="colLast">
 <div class="block">Describes the necessary parameters for an implementation in order to
  identify and set dynamic variables</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/JoinRelType.html#org.apache.calcite.tools">JoinRelType</a></th>
 <td class="colLast">
 <div class="block">Enumeration of join types.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.AggregateFactory.html#org.apache.calcite.tools">RelFactories.AggregateFactory</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.CorrelateFactory.html#org.apache.calcite.tools">RelFactories.CorrelateFactory</a></th>
 <td class="colLast">
 <div class="block">Can create a correlate of the appropriate type for a rule's calling
  convention.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.ExchangeFactory.html#org.apache.calcite.tools">RelFactories.ExchangeFactory</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.FilterFactory.html#org.apache.calcite.tools">RelFactories.FilterFactory</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.JoinFactory.html#org.apache.calcite.tools">RelFactories.JoinFactory</a></th>
 <td class="colLast">
 <div class="block">Can create a join of the appropriate type for a rule's calling convention.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.MatchFactory.html#org.apache.calcite.tools">RelFactories.MatchFactory</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.ProjectFactory.html#org.apache.calcite.tools">RelFactories.ProjectFactory</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.RepeatUnionFactory.html#org.apache.calcite.tools">RelFactories.RepeatUnionFactory</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.SetOpFactory.html#org.apache.calcite.tools">RelFactories.SetOpFactory</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.SnapshotFactory.html#org.apache.calcite.tools">RelFactories.SnapshotFactory</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.SortExchangeFactory.html#org.apache.calcite.tools">RelFactories.SortExchangeFactory</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.SortFactory.html#org.apache.calcite.tools">RelFactories.SortFactory</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.SpoolFactory.html#org.apache.calcite.tools">RelFactories.SpoolFactory</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.TableFunctionScanFactory.html#org.apache.calcite.tools">RelFactories.TableFunctionScanFactory</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.TableScanFactory.html#org.apache.calcite.tools">RelFactories.TableScanFactory</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/RelFactories.ValuesFactory.html#org.apache.calcite.tools">RelFactories.ValuesFactory</a></th>
 <td class="colLast">
 <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>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><a href="class-use/Spool.Type.html#org.apache.calcite.tools">Spool.Type</a></th>
 <td class="colLast">
 <div class="block">Enumeration representing spool read / write type.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><a href="class-use/TableScan.html#org.apache.calcite.tools">TableScan</a></th>
 <td class="colLast">
 <div class="block">Relational operator that returns the contents of a table.</div>
 </td>
 </tr>
 </tbody>
 </table>
 </li>
 </ul>
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