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<h1 title="Uses of Package org.apache.calcite.sql2rel" class="title">Uses of Package<br>org.apache.calcite.sql2rel</h1>
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<caption><span>Packages that use <a href="package-summary.html">org.apache.calcite.sql2rel</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.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.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.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="rowColor">
<th class="colFirst" scope="row"><a href="#org.apache.calcite.sql.fun">org.apache.calcite.sql.fun</a></th>
<td class="colLast">
<div class="block">Defines the set of standard SQL row-level functions and
operators.</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>
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<table class="useSummary">
<caption><span>Classes in <a href="package-summary.html">org.apache.calcite.sql2rel</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/InitializerContext.html#org.apache.calcite.prepare">InitializerContext</a></th>
<td class="colLast">
<div class="block">Provides context for <a href="InitializerExpressionFactory.html" title="interface in org.apache.calcite.sql2rel"><code>InitializerExpressionFactory</code></a> methods.</div>
</td>
</tr>
<tr class="rowColor">
<th class="colFirst" scope="row"><a href="class-use/SqlRexConvertletTable.html#org.apache.calcite.prepare">SqlRexConvertletTable</a></th>
<td class="colLast">
<div class="block">Collection of <a href="SqlRexConvertlet.html" title="interface in org.apache.calcite.sql2rel"><code>SqlRexConvertlet</code></a>s.</div>
</td>
</tr>
<tr class="altColor">
<th class="colFirst" scope="row"><a href="class-use/SqlToRelConverter.html#org.apache.calcite.prepare">SqlToRelConverter</a></th>
<td class="colLast">
<div class="block">Converts a SQL parse tree (consisting of
<a href="../sql/SqlNode.html" title="class in org.apache.calcite.sql"><code>SqlNode</code></a> objects) into a relational algebra
expression (consisting of <a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel"><code>RelNode</code></a> objects).</div>
</td>
</tr>
<tr class="rowColor">
<th class="colFirst" scope="row"><a href="class-use/SqlToRelConverter.Config.html#org.apache.calcite.prepare">SqlToRelConverter.Config</a></th>
<td class="colLast">
<div class="block">Interface to define the configuration for a SqlToRelConverter.</div>
</td>
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<caption><span>Classes in <a href="package-summary.html">org.apache.calcite.sql2rel</a> used by <a href="../schema/impl/package-summary.html">org.apache.calcite.schema.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/InitializerContext.html#org.apache.calcite.schema.impl">InitializerContext</a></th>
<td class="colLast">
<div class="block">Provides context for <a href="InitializerExpressionFactory.html" title="interface in org.apache.calcite.sql2rel"><code>InitializerExpressionFactory</code></a> methods.</div>
</td>
</tr>
<tr class="rowColor">
<th class="colFirst" scope="row"><a href="class-use/InitializerExpressionFactory.html#org.apache.calcite.schema.impl">InitializerExpressionFactory</a></th>
<td class="colLast">
<div class="block">InitializerExpressionFactory supplies default values for INSERT, UPDATE, and NEW.</div>
</td>
</tr>
<tr class="altColor">
<th class="colFirst" scope="row"><a href="class-use/NullInitializerExpressionFactory.html#org.apache.calcite.schema.impl">NullInitializerExpressionFactory</a></th>
<td class="colLast">
<div class="block">An implementation of <a href="InitializerExpressionFactory.html" title="interface in org.apache.calcite.sql2rel"><code>InitializerExpressionFactory</code></a> that always supplies NULL.</div>
</td>
</tr>
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<caption><span>Classes in <a href="package-summary.html">org.apache.calcite.sql2rel</a> used by <a href="../sql/ddl/package-summary.html">org.apache.calcite.sql.ddl</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/InitializerExpressionFactory.html#org.apache.calcite.sql.ddl">InitializerExpressionFactory</a></th>
<td class="colLast">
<div class="block">InitializerExpressionFactory supplies default values for INSERT, UPDATE, and NEW.</div>
</td>
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<caption><span>Classes in <a href="package-summary.html">org.apache.calcite.sql2rel</a> used by <a href="../sql/fun/package-summary.html">org.apache.calcite.sql.fun</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/AuxiliaryConverter.html#org.apache.calcite.sql.fun">AuxiliaryConverter</a></th>
<td class="colLast">
<div class="block">Converts an expression for a group window function (e.g.</div>
</td>
</tr>
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</table>
</li>
<li class="blockList"><a id="org.apache.calcite.sql.validate">
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<table class="useSummary">
<caption><span>Classes in <a href="package-summary.html">org.apache.calcite.sql2rel</a> used by <a href="../sql/validate/package-summary.html">org.apache.calcite.sql.validate</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/InitializerContext.html#org.apache.calcite.sql.validate">InitializerContext</a></th>
<td class="colLast">
<div class="block">Provides context for <a href="InitializerExpressionFactory.html" title="interface in org.apache.calcite.sql2rel"><code>InitializerExpressionFactory</code></a> methods.</div>
</td>
</tr>
</tbody>
</table>
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<table class="useSummary">
<caption><span>Classes in <a href="package-summary.html">org.apache.calcite.sql2rel</a> used by <a href="package-summary.html">org.apache.calcite.sql2rel</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/AuxiliaryConverter.html#org.apache.calcite.sql2rel">AuxiliaryConverter</a></th>
<td class="colLast">
<div class="block">Converts an expression for a group window function (e.g.</div>
</td>
</tr>
<tr class="rowColor">
<th class="colFirst" scope="row"><a href="class-use/CorrelationReferenceFinder.html#org.apache.calcite.sql2rel">CorrelationReferenceFinder</a></th>
<td class="colLast">
<div class="block">Shuttle that finds references to a given <a href="../rel/core/CorrelationId.html" title="class in org.apache.calcite.rel.core"><code>CorrelationId</code></a> within a tree
of <a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel"><code>RelNode</code></a>s.</div>
</td>
</tr>
<tr class="altColor">
<th class="colFirst" scope="row"><a href="class-use/CorrelationReferenceFinder.MyRexVisitor.html#org.apache.calcite.sql2rel">CorrelationReferenceFinder.MyRexVisitor</a></th>
<td class="colLast">
<div class="block">Replaces alternative names of correlation variable to its canonical name.</div>
</td>
</tr>
<tr class="rowColor">
<th class="colFirst" scope="row"><a href="class-use/DeduplicateCorrelateVariables.html#org.apache.calcite.sql2rel">DeduplicateCorrelateVariables</a></th>
<td class="colLast">
<div class="block">Rewrites relations to ensure the same correlation is referenced by the same
correlation variable.</div>
</td>
</tr>
<tr class="altColor">
<th class="colFirst" scope="row"><a href="class-use/InitializerContext.html#org.apache.calcite.sql2rel">InitializerContext</a></th>
<td class="colLast">
<div class="block">Provides context for <a href="InitializerExpressionFactory.html" title="interface in org.apache.calcite.sql2rel"><code>InitializerExpressionFactory</code></a> methods.</div>
</td>
</tr>
<tr class="rowColor">
<th class="colFirst" scope="row"><a href="class-use/InitializerExpressionFactory.html#org.apache.calcite.sql2rel">InitializerExpressionFactory</a></th>
<td class="colLast">
<div class="block">InitializerExpressionFactory supplies default values for INSERT, UPDATE, and NEW.</div>
</td>
</tr>
<tr class="altColor">
<th class="colFirst" scope="row"><a href="class-use/ReflectiveConvertletTable.html#org.apache.calcite.sql2rel">ReflectiveConvertletTable</a></th>
<td class="colLast">
<div class="block">Implementation of <a href="SqlRexConvertletTable.html" title="interface in org.apache.calcite.sql2rel"><code>SqlRexConvertletTable</code></a> which uses reflection to call
any method of the form <code>public RexNode convertXxx(ConvertletContext,
SqlNode)</code> or <code>public RexNode convertXxx(ConvertletContext,
SqlOperator, SqlCall)</code>.</div>
</td>
</tr>
<tr class="rowColor">
<th class="colFirst" scope="row"><a href="class-use/RelDecorrelator.CorDef.html#org.apache.calcite.sql2rel">RelDecorrelator.CorDef</a></th>
<td class="colLast">
<div class="block">A correlation and a field.</div>
</td>
</tr>
<tr class="altColor">
<th class="colFirst" scope="row"><a href="class-use/RelDecorrelator.CorelMap.html#org.apache.calcite.sql2rel">RelDecorrelator.CorelMap</a></th>
<td class="colLast">
<div class="block">A map of the locations of
<a href="../rel/logical/LogicalCorrelate.html" title="class in org.apache.calcite.rel.logical"><code>LogicalCorrelate</code></a>
in a tree of <a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel"><code>RelNode</code></a>s.</div>
</td>
</tr>
<tr class="rowColor">
<th class="colFirst" scope="row"><a href="class-use/RelDecorrelator.CorRef.html#org.apache.calcite.sql2rel">RelDecorrelator.CorRef</a></th>
<td class="colLast">
<div class="block">A unique reference to a correlation field.</div>
</td>
</tr>
<tr class="altColor">
<th class="colFirst" scope="row"><a href="class-use/RelDecorrelator.Frame.html#org.apache.calcite.sql2rel">RelDecorrelator.Frame</a></th>
<td class="colLast">
<div class="block">Frame describing the relational expression after decorrelation
and where to find the output fields and correlation variables
among its output fields.</div>
</td>
</tr>
<tr class="rowColor">
<th class="colFirst" scope="row"><a href="class-use/RelFieldTrimmer.html#org.apache.calcite.sql2rel">RelFieldTrimmer</a></th>
<td class="colLast">
<div class="block">Transformer that walks over a tree of relational expressions, replacing each
<a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel"><code>RelNode</code></a> with a 'slimmed down' relational expression that projects
only the columns required by its consumer.</div>
</td>
</tr>
<tr class="altColor">
<th class="colFirst" scope="row"><a href="class-use/RelFieldTrimmer.TrimResult.html#org.apache.calcite.sql2rel">RelFieldTrimmer.TrimResult</a></th>
<td class="colLast">
<div class="block">Result of an attempt to trim columns from a relational expression.</div>
</td>
</tr>
<tr class="rowColor">
<th class="colFirst" scope="row"><a href="class-use/RelStructuredTypeFlattener.html#org.apache.calcite.sql2rel">RelStructuredTypeFlattener</a></th>
<td class="colLast">
<div class="block">RelStructuredTypeFlattener removes all structured types from a tree of
relational expressions.</div>
</td>
</tr>
<tr class="altColor">
<th class="colFirst" scope="row"><a href="class-use/RelStructuredTypeFlattener.RewriteRexShuttle.html#org.apache.calcite.sql2rel">RelStructuredTypeFlattener.RewriteRexShuttle</a></th>
<td class="colLast">
<div class="block">Shuttle that rewrites scalar expressions.</div>
</td>
</tr>
<tr class="rowColor">
<th class="colFirst" scope="row"><a href="class-use/RelStructuredTypeFlattener.SelfFlatteningRel.html#org.apache.calcite.sql2rel">RelStructuredTypeFlattener.SelfFlatteningRel</a></th>
<td class="colLast">
<div class="block">Mix-in interface for relational expressions that know how to
flatten themselves.</div>
</td>
</tr>
<tr class="altColor">
<th class="colFirst" scope="row"><a href="class-use/SqlNodeToRexConverter.html#org.apache.calcite.sql2rel">SqlNodeToRexConverter</a></th>
<td class="colLast">
<div class="block">Converts expressions from <a href="../sql/SqlNode.html" title="class in org.apache.calcite.sql"><code>SqlNode</code></a> to <a href="../rex/RexNode.html" title="class in org.apache.calcite.rex"><code>RexNode</code></a>.</div>
</td>
</tr>
<tr class="rowColor">
<th class="colFirst" scope="row"><a href="class-use/SqlRexContext.html#org.apache.calcite.sql2rel">SqlRexContext</a></th>
<td class="colLast">
<div class="block">Contains the context necessary for a <a href="SqlRexConvertlet.html" title="interface in org.apache.calcite.sql2rel"><code>SqlRexConvertlet</code></a> to convert a
<a href="../sql/SqlNode.html" title="class in org.apache.calcite.sql"><code>SqlNode</code></a> expression into a <a href="../rex/RexNode.html" title="class in org.apache.calcite.rex"><code>RexNode</code></a>.</div>
</td>
</tr>
<tr class="altColor">
<th class="colFirst" scope="row"><a href="class-use/SqlRexConvertlet.html#org.apache.calcite.sql2rel">SqlRexConvertlet</a></th>
<td class="colLast">
<div class="block">Thunk which converts a <a href="../sql/SqlNode.html" title="class in org.apache.calcite.sql"><code>SqlNode</code></a> expression into a <a href="../rex/RexNode.html" title="class in org.apache.calcite.rex"><code>RexNode</code></a>
expression.</div>
</td>
</tr>
<tr class="rowColor">
<th class="colFirst" scope="row"><a href="class-use/SqlRexConvertletTable.html#org.apache.calcite.sql2rel">SqlRexConvertletTable</a></th>
<td class="colLast">
<div class="block">Collection of <a href="SqlRexConvertlet.html" title="interface in org.apache.calcite.sql2rel"><code>SqlRexConvertlet</code></a>s.</div>
</td>
</tr>
<tr class="altColor">
<th class="colFirst" scope="row"><a href="class-use/SqlToRelConverter.html#org.apache.calcite.sql2rel">SqlToRelConverter</a></th>
<td class="colLast">
<div class="block">Converts a SQL parse tree (consisting of
<a href="../sql/SqlNode.html" title="class in org.apache.calcite.sql"><code>SqlNode</code></a> objects) into a relational algebra
expression (consisting of <a href="../rel/RelNode.html" title="interface in org.apache.calcite.rel"><code>RelNode</code></a> objects).</div>
</td>
</tr>
<tr class="rowColor">
<th class="colFirst" scope="row"><a href="class-use/SqlToRelConverter.AggConverter.html#org.apache.calcite.sql2rel">SqlToRelConverter.AggConverter</a></th>
<td class="colLast">
<div class="block">Converts expressions to aggregates.</div>
</td>
</tr>
<tr class="altColor">
<th class="colFirst" scope="row"><a href="class-use/SqlToRelConverter.Blackboard.html#org.apache.calcite.sql2rel">SqlToRelConverter.Blackboard</a></th>
<td class="colLast">
<div class="block">Workspace for translating an individual SELECT statement (or sub-SELECT).</div>
</td>
</tr>
<tr class="rowColor">
<th class="colFirst" scope="row"><a href="class-use/SqlToRelConverter.Config.html#org.apache.calcite.sql2rel">SqlToRelConverter.Config</a></th>
<td class="colLast">
<div class="block">Interface to define the configuration for a SqlToRelConverter.</div>
</td>
</tr>
<tr class="altColor">
<th class="colFirst" scope="row"><a href="class-use/SqlToRelConverter.ConfigBuilder.html#org.apache.calcite.sql2rel">SqlToRelConverter.ConfigBuilder</a></th>
<td class="colLast">
<div class="block">Builder for a <a href="SqlToRelConverter.Config.html" title="interface in org.apache.calcite.sql2rel"><code>SqlToRelConverter.Config</code></a>.</div>
</td>
</tr>
<tr class="rowColor">
<th class="colFirst" scope="row"><a href="class-use/SqlToRelConverter.CorrelationUse.html#org.apache.calcite.sql2rel">SqlToRelConverter.CorrelationUse</a></th>
<td class="colLast">
<div class="block">Use of a row as a correlating variable by a given relational
expression.</div>
</td>
</tr>
<tr class="altColor">
<th class="colFirst" scope="row"><a href="class-use/SqlToRelConverter.DeferredLookup.html#org.apache.calcite.sql2rel">SqlToRelConverter.DeferredLookup</a></th>
<td class="colLast">
<div class="block">Deferred lookup.</div>
</td>
</tr>
<tr class="rowColor">
<th class="colFirst" scope="row"><a href="class-use/SqlToRelConverter.LookupContext.html#org.apache.calcite.sql2rel">SqlToRelConverter.LookupContext</a></th>
<td class="colLast">
<div class="block">Context to find a relational expression to a field offset.</div>
</td>
</tr>
<tr class="altColor">
<th class="colFirst" scope="row"><a href="class-use/SqlToRelConverter.SubQuery.html#org.apache.calcite.sql2rel">SqlToRelConverter.SubQuery</a></th>
<td class="colLast">
<div class="block">A sub-query, whether it needs to be translated using 2- or 3-valued
logic.</div>
</td>
</tr>
<tr class="rowColor">
<th class="colFirst" scope="row"><a href="class-use/StandardConvertletTable.html#org.apache.calcite.sql2rel">StandardConvertletTable</a></th>
<td class="colLast">
<div class="block">Standard implementation of <a href="SqlRexConvertletTable.html" title="interface in org.apache.calcite.sql2rel"><code>SqlRexConvertletTable</code></a>.</div>
</td>
</tr>
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<th class="colFirst" scope="row"><a href="class-use/SubQueryConverter.html#org.apache.calcite.sql2rel">SubQueryConverter</a></th>
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