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<div class="subTitle"><span class="packageLabelInType">Package</span>&nbsp;<a href="package-summary.html">org.apache.calcite.rel.rules</a></div>
<h2 title="Class AggregateReduceFunctionsRule" class="title">Class AggregateReduceFunctionsRule</h2>
</div>
<div class="contentContainer">
<ul class="inheritance">
<li>java.lang.Object</li>
<li>
<ul class="inheritance">
<li><a href="../../plan/RelOptRule.html" title="class in org.apache.calcite.plan">org.apache.calcite.plan.RelOptRule</a></li>
<li>
<ul class="inheritance">
<li>org.apache.calcite.rel.rules.AggregateReduceFunctionsRule</li>
</ul>
</li>
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<pre>public class <span class="typeNameLabel">AggregateReduceFunctionsRule</span>
extends <a href="../../plan/RelOptRule.html" title="class in org.apache.calcite.plan">RelOptRule</a></pre>
<div class="block">Planner rule that reduces aggregate functions in
<a href="../core/Aggregate.html" title="class in org.apache.calcite.rel.core"><code>Aggregate</code></a>s to simpler forms.
<p>Rewrites:
<ul>
<li>AVG(x) &rarr; SUM(x) / COUNT(x)
<li>STDDEV_POP(x) &rarr; SQRT(
(SUM(x * x) - SUM(x) * SUM(x) / COUNT(x))
/ COUNT(x))
<li>STDDEV_SAMP(x) &rarr; SQRT(
(SUM(x * x) - SUM(x) * SUM(x) / COUNT(x))
/ CASE COUNT(x) WHEN 1 THEN NULL ELSE COUNT(x) - 1 END)
<li>VAR_POP(x) &rarr; (SUM(x * x) - SUM(x) * SUM(x) / COUNT(x))
/ COUNT(x)
<li>VAR_SAMP(x) &rarr; (SUM(x * x) - SUM(x) * SUM(x) / COUNT(x))
/ CASE COUNT(x) WHEN 1 THEN NULL ELSE COUNT(x) - 1 END
<li>COVAR_POP(x, y) &rarr; (SUM(x * y) - SUM(x, y) * SUM(y, x)
/ REGR_COUNT(x, y)) / REGR_COUNT(x, y)
<li>COVAR_SAMP(x, y) &rarr; (SUM(x * y) - SUM(x, y) * SUM(y, x) / REGR_COUNT(x, y))
/ CASE REGR_COUNT(x, y) WHEN 1 THEN NULL ELSE REGR_COUNT(x, y) - 1 END
<li>REGR_SXX(x, y) &rarr; REGR_COUNT(x, y) * VAR_POP(y)
<li>REGR_SYY(x, y) &rarr; REGR_COUNT(x, y) * VAR_POP(x)
</ul>
<p>Since many of these rewrites introduce multiple occurrences of simpler
forms like <code>COUNT(x)</code>, the rule gathers common sub-expressions as it
goes.</div>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colSecond" scope="col">Field</th>
<th class="colLast" scope="col">Description</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private java.util.EnumSet&lt;<a href="../../sql/SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a>&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#functionsToReduce">functionsToReduce</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="AggregateReduceFunctionsRule.html" title="class in org.apache.calcite.rel.rules">AggregateReduceFunctionsRule</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#INSTANCE">INSTANCE</a></span></code></th>
<td class="colLast">
<div class="block">The singleton.</div>
</td>
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<h3>Fields inherited from class&nbsp;org.apache.calcite.plan.<a href="../../plan/RelOptRule.html" title="class in org.apache.calcite.plan">RelOptRule</a></h3>
<code><a href="../../plan/RelOptRule.html#description">description</a>, <a href="../../plan/RelOptRule.html#operands">operands</a>, <a href="../../plan/RelOptRule.html#relBuilderFactory">relBuilderFactory</a></code></li>
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<caption><span>Constructors</span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Constructor</th>
<th class="colLast" scope="col">Description</th>
</tr>
<tr class="altColor">
<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(java.lang.Class,org.apache.calcite.tools.RelBuilderFactory,java.util.EnumSet)">AggregateReduceFunctionsRule</a></span>&#8203;(java.lang.Class&lt;? extends <a href="../core/Aggregate.html" title="class in org.apache.calcite.rel.core">Aggregate</a>&gt;&nbsp;aggregateClass,
<a href="../../tools/RelBuilderFactory.html" title="interface in org.apache.calcite.tools">RelBuilderFactory</a>&nbsp;relBuilderFactory,
java.util.EnumSet&lt;<a href="../../sql/SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a>&gt;&nbsp;functionsToReduce)</code></th>
<td class="colLast">
<div class="block">Creates an AggregateReduceFunctionsRule with client
provided information on which specific functions will
be reduced by this rule</div>
</td>
</tr>
<tr class="rowColor">
<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(org.apache.calcite.plan.RelOptRuleOperand,org.apache.calcite.tools.RelBuilderFactory)">AggregateReduceFunctionsRule</a></span>&#8203;(<a href="../../plan/RelOptRuleOperand.html" title="class in org.apache.calcite.plan">RelOptRuleOperand</a>&nbsp;operand,
<a href="../../tools/RelBuilderFactory.html" title="interface in org.apache.calcite.tools">RelBuilderFactory</a>&nbsp;relBuilderFactory)</code></th>
<td class="colLast">
<div class="block">Creates an AggregateReduceFunctionsRule to reduce all functions
handled by this rule</div>
</td>
</tr>
</table>
</li>
</ul>
</section>
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<h3>Method Summary</h3>
<table class="memberSummary">
<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd">&nbsp;</span></span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colSecond" scope="col">Method</th>
<th class="colLast" scope="col">Description</th>
</tr>
<tr id="i0" class="altColor">
<td class="colFirst"><code>private void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#addDefaultSetOfFunctionsToReduce()">addDefaultSetOfFunctionsToReduce</a></span>()</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>private boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#containsAvgStddevVarCall(java.util.List)">containsAvgStddevVarCall</a></span>&#8203;(java.util.List&lt;<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>&gt;&nbsp;aggCallList)</code></th>
<td class="colLast">
<div class="block">Returns whether any of the aggregates are calls to AVG, STDDEV_*, VAR_*.</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>private <a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#createAggregateCallWithBinding(org.apache.calcite.rel.type.RelDataTypeFactory,org.apache.calcite.sql.SqlAggFunction,org.apache.calcite.rel.type.RelDataType,org.apache.calcite.rel.core.Aggregate,org.apache.calcite.rel.core.AggregateCall,int,int)">createAggregateCallWithBinding</a></span>&#8203;(<a href="../type/RelDataTypeFactory.html" title="interface in org.apache.calcite.rel.type">RelDataTypeFactory</a>&nbsp;typeFactory,
<a href="../../sql/SqlAggFunction.html" title="class in org.apache.calcite.sql">SqlAggFunction</a>&nbsp;aggFunction,
<a href="../type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;operandType,
<a href="../core/Aggregate.html" title="class in org.apache.calcite.rel.core">Aggregate</a>&nbsp;oldAggRel,
<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>&nbsp;oldCall,
int&nbsp;argOrdinal,
int&nbsp;filter)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>private <a href="../type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getFieldType(org.apache.calcite.rel.RelNode,int)">getFieldType</a></span>&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;relNode,
int&nbsp;i)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>private <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getRegrCountRexNode(org.apache.calcite.rel.core.Aggregate,org.apache.calcite.rel.core.AggregateCall,java.util.List,java.util.Map,org.apache.calcite.util.ImmutableIntList,com.google.common.collect.ImmutableList,int)">getRegrCountRexNode</a></span>&#8203;(<a href="../core/Aggregate.html" title="class in org.apache.calcite.rel.core">Aggregate</a>&nbsp;oldAggRel,
<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>&nbsp;oldCall,
java.util.List&lt;<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>&gt;&nbsp;newCalls,
java.util.Map&lt;<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>,&#8203;<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;aggCallMapping,
<a href="../../util/ImmutableIntList.html" title="class in org.apache.calcite.util">ImmutableIntList</a>&nbsp;argOrdinals,
com.google.common.collect.ImmutableList&lt;<a href="../type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&gt;&nbsp;operandTypes,
int&nbsp;filterArg)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>private <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getSumAggregatedRexNode(org.apache.calcite.rel.core.Aggregate,org.apache.calcite.rel.core.AggregateCall,java.util.List,java.util.Map,org.apache.calcite.rex.RexBuilder,int,int)">getSumAggregatedRexNode</a></span>&#8203;(<a href="../core/Aggregate.html" title="class in org.apache.calcite.rel.core">Aggregate</a>&nbsp;oldAggRel,
<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>&nbsp;oldCall,
java.util.List&lt;<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>&gt;&nbsp;newCalls,
java.util.Map&lt;<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>,&#8203;<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;aggCallMapping,
<a href="../../rex/RexBuilder.html" title="class in org.apache.calcite.rex">RexBuilder</a>&nbsp;rexBuilder,
int&nbsp;argOrdinal,
int&nbsp;filterArg)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>private <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getSumAggregatedRexNodeWithBinding(org.apache.calcite.rel.core.Aggregate,org.apache.calcite.rel.core.AggregateCall,java.util.List,java.util.Map,org.apache.calcite.rel.type.RelDataType,int,int)">getSumAggregatedRexNodeWithBinding</a></span>&#8203;(<a href="../core/Aggregate.html" title="class in org.apache.calcite.rel.core">Aggregate</a>&nbsp;oldAggRel,
<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>&nbsp;oldCall,
java.util.List&lt;<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>&gt;&nbsp;newCalls,
java.util.Map&lt;<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>,&#8203;<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;aggCallMapping,
<a href="../type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;operandType,
int&nbsp;argOrdinal,
int&nbsp;filter)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code>private boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isReducible(org.apache.calcite.sql.SqlKind)">isReducible</a></span>&#8203;(<a href="../../sql/SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a>&nbsp;kind)</code></th>
<td class="colLast">
<div class="block">Returns whether the aggregate call is a reducible function</div>
</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>private static &lt;T&gt;&nbsp;int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#lookupOrAdd(java.util.List,T)">lookupOrAdd</a></span>&#8203;(java.util.List&lt;T&gt;&nbsp;list,
T&nbsp;element)</code></th>
<td class="colLast">
<div class="block">Finds the ordinal of an element in a list, or adds it.</div>
</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#matches(org.apache.calcite.plan.RelOptRuleCall)">matches</a></span>&#8203;(<a href="../../plan/RelOptRuleCall.html" title="class in org.apache.calcite.plan">RelOptRuleCall</a>&nbsp;call)</code></th>
<td class="colLast">
<div class="block">Returns whether this rule could possibly match the given operands.</div>
</td>
</tr>
<tr id="i10" class="altColor">
<td class="colFirst"><code>protected void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#newAggregateRel(org.apache.calcite.tools.RelBuilder,org.apache.calcite.rel.core.Aggregate,java.util.List)">newAggregateRel</a></span>&#8203;(<a href="../../tools/RelBuilder.html" title="class in org.apache.calcite.tools">RelBuilder</a>&nbsp;relBuilder,
<a href="../core/Aggregate.html" title="class in org.apache.calcite.rel.core">Aggregate</a>&nbsp;oldAggregate,
java.util.List&lt;<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>&gt;&nbsp;newCalls)</code></th>
<td class="colLast">
<div class="block">Do a shallow clone of oldAggRel and update aggCalls.</div>
</td>
</tr>
<tr id="i11" class="rowColor">
<td class="colFirst"><code>protected void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#newCalcRel(org.apache.calcite.tools.RelBuilder,org.apache.calcite.rel.type.RelDataType,java.util.List)">newCalcRel</a></span>&#8203;(<a href="../../tools/RelBuilder.html" title="class in org.apache.calcite.tools">RelBuilder</a>&nbsp;relBuilder,
<a href="../type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;rowType,
java.util.List&lt;<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;exprs)</code></th>
<td class="colLast">
<div class="block">Add a calc with the expressions to compute the original agg calls from the
decomposed ones.</div>
</td>
</tr>
<tr id="i12" class="altColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#onMatch(org.apache.calcite.plan.RelOptRuleCall)">onMatch</a></span>&#8203;(<a href="../../plan/RelOptRuleCall.html" title="class in org.apache.calcite.plan">RelOptRuleCall</a>&nbsp;ruleCall)</code></th>
<td class="colLast">
<div class="block">Receives notification about a rule match.</div>
</td>
</tr>
<tr id="i13" class="rowColor">
<td class="colFirst"><code>private <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#reduceAgg(org.apache.calcite.rel.core.Aggregate,org.apache.calcite.rel.core.AggregateCall,java.util.List,java.util.Map,java.util.List)">reduceAgg</a></span>&#8203;(<a href="../core/Aggregate.html" title="class in org.apache.calcite.rel.core">Aggregate</a>&nbsp;oldAggRel,
<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>&nbsp;oldCall,
java.util.List&lt;<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>&gt;&nbsp;newCalls,
java.util.Map&lt;<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>,&#8203;<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;aggCallMapping,
java.util.List&lt;<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;inputExprs)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i14" class="altColor">
<td class="colFirst"><code>private void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#reduceAggs(org.apache.calcite.plan.RelOptRuleCall,org.apache.calcite.rel.core.Aggregate)">reduceAggs</a></span>&#8203;(<a href="../../plan/RelOptRuleCall.html" title="class in org.apache.calcite.plan">RelOptRuleCall</a>&nbsp;ruleCall,
<a href="../core/Aggregate.html" title="class in org.apache.calcite.rel.core">Aggregate</a>&nbsp;oldAggRel)</code></th>
<td class="colLast">
<div class="block">Reduces calls to functions AVG, SUM, STDDEV_POP, STDDEV_SAMP, VAR_POP,
VAR_SAMP, COVAR_POP, COVAR_SAMP, REGR_SXX, REGR_SYY if the function is
present in <a href="#functionsToReduce"><code>functionsToReduce</code></a></div>
</td>
</tr>
<tr id="i15" class="rowColor">
<td class="colFirst"><code>private <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#reduceAvg(org.apache.calcite.rel.core.Aggregate,org.apache.calcite.rel.core.AggregateCall,java.util.List,java.util.Map,java.util.List)">reduceAvg</a></span>&#8203;(<a href="../core/Aggregate.html" title="class in org.apache.calcite.rel.core">Aggregate</a>&nbsp;oldAggRel,
<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>&nbsp;oldCall,
java.util.List&lt;<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>&gt;&nbsp;newCalls,
java.util.Map&lt;<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>,&#8203;<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;aggCallMapping,
java.util.List&lt;<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;inputExprs)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i16" class="altColor">
<td class="colFirst"><code>private <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#reduceCovariance(org.apache.calcite.rel.core.Aggregate,org.apache.calcite.rel.core.AggregateCall,boolean,java.util.List,java.util.Map,java.util.List)">reduceCovariance</a></span>&#8203;(<a href="../core/Aggregate.html" title="class in org.apache.calcite.rel.core">Aggregate</a>&nbsp;oldAggRel,
<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>&nbsp;oldCall,
boolean&nbsp;biased,
java.util.List&lt;<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>&gt;&nbsp;newCalls,
java.util.Map&lt;<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>,&#8203;<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;aggCallMapping,
java.util.List&lt;<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;inputExprs)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i17" class="rowColor">
<td class="colFirst"><code>private <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#reduceRegrSzz(org.apache.calcite.rel.core.Aggregate,org.apache.calcite.rel.core.AggregateCall,java.util.List,java.util.Map,java.util.List,int,int,int)">reduceRegrSzz</a></span>&#8203;(<a href="../core/Aggregate.html" title="class in org.apache.calcite.rel.core">Aggregate</a>&nbsp;oldAggRel,
<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>&nbsp;oldCall,
java.util.List&lt;<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>&gt;&nbsp;newCalls,
java.util.Map&lt;<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>,&#8203;<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;aggCallMapping,
java.util.List&lt;<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;inputExprs,
int&nbsp;xIndex,
int&nbsp;yIndex,
int&nbsp;nullFilterIndex)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i18" class="altColor">
<td class="colFirst"><code>private <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#reduceStddev(org.apache.calcite.rel.core.Aggregate,org.apache.calcite.rel.core.AggregateCall,boolean,boolean,java.util.List,java.util.Map,java.util.List)">reduceStddev</a></span>&#8203;(<a href="../core/Aggregate.html" title="class in org.apache.calcite.rel.core">Aggregate</a>&nbsp;oldAggRel,
<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>&nbsp;oldCall,
boolean&nbsp;biased,
boolean&nbsp;sqrt,
java.util.List&lt;<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>&gt;&nbsp;newCalls,
java.util.Map&lt;<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>,&#8203;<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;aggCallMapping,
java.util.List&lt;<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;inputExprs)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i19" class="rowColor">
<td class="colFirst"><code>private <a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#reduceSum(org.apache.calcite.rel.core.Aggregate,org.apache.calcite.rel.core.AggregateCall,java.util.List,java.util.Map)">reduceSum</a></span>&#8203;(<a href="../core/Aggregate.html" title="class in org.apache.calcite.rel.core">Aggregate</a>&nbsp;oldAggRel,
<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>&nbsp;oldCall,
java.util.List&lt;<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>&gt;&nbsp;newCalls,
java.util.Map&lt;<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>,&#8203;<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;aggCallMapping)</code></th>
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<h3>Methods inherited from class&nbsp;org.apache.calcite.plan.<a href="../../plan/RelOptRule.html" title="class in org.apache.calcite.plan">RelOptRule</a></h3>
<code><a href="../../plan/RelOptRule.html#any()">any</a>, <a href="../../plan/RelOptRule.html#convert(org.apache.calcite.rel.RelNode,org.apache.calcite.plan.RelTrait)">convert</a>, <a href="../../plan/RelOptRule.html#convert(org.apache.calcite.rel.RelNode,org.apache.calcite.plan.RelTraitSet)">convert</a>, <a href="../../plan/RelOptRule.html#convertList(java.util.List,org.apache.calcite.plan.RelTrait)">convertList</a>, <a href="../../plan/RelOptRule.html#convertOperand(java.lang.Class,com.google.common.base.Predicate,org.apache.calcite.plan.RelTrait)">convertOperand</a>, <a href="../../plan/RelOptRule.html#convertOperand(java.lang.Class,java.util.function.Predicate,org.apache.calcite.plan.RelTrait)">convertOperand</a>, <a href="../../plan/RelOptRule.html#equals(java.lang.Object)">equals</a>, <a href="../../plan/RelOptRule.html#equals(org.apache.calcite.plan.RelOptRule)">equals</a>, <a href="../../plan/RelOptRule.html#getOperand()">getOperand</a>, <a href="../../plan/RelOptRule.html#getOperands()">getOperands</a>, <a href="../../plan/RelOptRule.html#getOutConvention()">getOutConvention</a>, <a href="../../plan/RelOptRule.html#getOutTrait()">getOutTrait</a>, <a href="../../plan/RelOptRule.html#hashCode()">hashCode</a>, <a href="../../plan/RelOptRule.html#none()">none</a>, <a href="../../plan/RelOptRule.html#operand(java.lang.Class,org.apache.calcite.plan.RelOptRuleOperandChildren)">operand</a>, <a href="../../plan/RelOptRule.html#operand(java.lang.Class,org.apache.calcite.plan.RelOptRuleOperand,org.apache.calcite.plan.RelOptRuleOperand...)">operand</a>, <a href="../../plan/RelOptRule.html#operand(java.lang.Class,org.apache.calcite.plan.RelTrait,com.google.common.base.Predicate,org.apache.calcite.plan.RelOptRuleOperandChildren)">operand</a>, <a href="../../plan/RelOptRule.html#operand(java.lang.Class,org.apache.calcite.plan.RelTrait,com.google.common.base.Predicate,org.apache.calcite.plan.RelOptRuleOperand,org.apache.calcite.plan.RelOptRuleOperand...)">operand</a>, <a href="../../plan/RelOptRule.html#operand(java.lang.Class,org.apache.calcite.plan.RelTrait,org.apache.calcite.plan.RelOptRuleOperandChildren)">operand</a>, <a href="../../plan/RelOptRule.html#operandJ(java.lang.Class,org.apache.calcite.plan.RelTrait,java.util.function.Predicate,org.apache.calcite.plan.RelOptRuleOperandChildren)">operandJ</a>, <a href="../../plan/RelOptRule.html#operandJ(java.lang.Class,org.apache.calcite.plan.RelTrait,java.util.function.Predicate,org.apache.calcite.plan.RelOptRuleOperand,org.apache.calcite.plan.RelOptRuleOperand...)">operandJ</a>, <a href="../../plan/RelOptRule.html#some(org.apache.calcite.plan.RelOptRuleOperand,org.apache.calcite.plan.RelOptRuleOperand...)">some</a>, <a href="../../plan/RelOptRule.html#toString()">toString</a>, <a href="../../plan/RelOptRule.html#unordered(org.apache.calcite.plan.RelOptRuleOperand,org.apache.calcite.plan.RelOptRuleOperand...)">unordered</a></code></li>
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<h3>Methods inherited from class&nbsp;java.lang.Object</h3>
<code>clone, finalize, getClass, notify, notifyAll, wait, wait, wait</code></li>
</ul>
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</section>
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<pre>public static final&nbsp;<a href="AggregateReduceFunctionsRule.html" title="class in org.apache.calcite.rel.rules">AggregateReduceFunctionsRule</a> INSTANCE</pre>
<div class="block">The singleton.</div>
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<a id="functionsToReduce">
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<h4>functionsToReduce</h4>
<pre>private final&nbsp;java.util.EnumSet&lt;<a href="../../sql/SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a>&gt; functionsToReduce</pre>
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<h3>Constructor Detail</h3>
<a id="&lt;init&gt;(org.apache.calcite.plan.RelOptRuleOperand,org.apache.calcite.tools.RelBuilderFactory)">
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<h4>AggregateReduceFunctionsRule</h4>
<pre>public&nbsp;AggregateReduceFunctionsRule&#8203;(<a href="../../plan/RelOptRuleOperand.html" title="class in org.apache.calcite.plan">RelOptRuleOperand</a>&nbsp;operand,
<a href="../../tools/RelBuilderFactory.html" title="interface in org.apache.calcite.tools">RelBuilderFactory</a>&nbsp;relBuilderFactory)</pre>
<div class="block">Creates an AggregateReduceFunctionsRule to reduce all functions
handled by this rule</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>operand</code> - operand to determine if rule can be applied</dd>
<dd><code>relBuilderFactory</code> - builder for relational expressions</dd>
</dl>
</li>
</ul>
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<h4>AggregateReduceFunctionsRule</h4>
<pre>public&nbsp;AggregateReduceFunctionsRule&#8203;(java.lang.Class&lt;? extends <a href="../core/Aggregate.html" title="class in org.apache.calcite.rel.core">Aggregate</a>&gt;&nbsp;aggregateClass,
<a href="../../tools/RelBuilderFactory.html" title="interface in org.apache.calcite.tools">RelBuilderFactory</a>&nbsp;relBuilderFactory,
java.util.EnumSet&lt;<a href="../../sql/SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a>&gt;&nbsp;functionsToReduce)</pre>
<div class="block">Creates an AggregateReduceFunctionsRule with client
provided information on which specific functions will
be reduced by this rule</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>aggregateClass</code> - aggregate class</dd>
<dd><code>relBuilderFactory</code> - builder for relational expressions</dd>
<dd><code>functionsToReduce</code> - client provided information
on which specific functions
will be reduced by this rule</dd>
</dl>
</li>
</ul>
</li>
</ul>
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<a id="addDefaultSetOfFunctionsToReduce()">
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<h4>addDefaultSetOfFunctionsToReduce</h4>
<pre class="methodSignature">private&nbsp;void&nbsp;addDefaultSetOfFunctionsToReduce()</pre>
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<h4>matches</h4>
<pre class="methodSignature">public&nbsp;boolean&nbsp;matches&#8203;(<a href="../../plan/RelOptRuleCall.html" title="class in org.apache.calcite.plan">RelOptRuleCall</a>&nbsp;call)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="../../plan/RelOptRule.html#matches(org.apache.calcite.plan.RelOptRuleCall)">RelOptRule</a></code></span></div>
<div class="block">Returns whether this rule could possibly match the given operands.
<p>This method is an opportunity to apply side-conditions to a rule. The
<a href="../../plan/RelOptPlanner.html" title="interface in org.apache.calcite.plan"><code>RelOptPlanner</code></a> calls this method after matching all operands of
the rule, and before calling <a href="../../plan/RelOptRule.html#onMatch(org.apache.calcite.plan.RelOptRuleCall)"><code>RelOptRule.onMatch(RelOptRuleCall)</code></a>.
<p>In implementations of <a href="../../plan/RelOptPlanner.html" title="interface in org.apache.calcite.plan"><code>RelOptPlanner</code></a> which may queue up a
matched <a href="../../plan/RelOptRuleCall.html" title="class in org.apache.calcite.plan"><code>RelOptRuleCall</code></a> for a long time before calling
<a href="../../plan/RelOptRule.html#onMatch(org.apache.calcite.plan.RelOptRuleCall)"><code>RelOptRule.onMatch(RelOptRuleCall)</code></a>, this method is beneficial because it
allows the planner to discard rules earlier in the process.
<p>The default implementation of this method returns <code>true</code>.
It is acceptable for any implementation of this method to give a false
positives, that is, to say that the rule matches the operands but have
<a href="../../plan/RelOptRule.html#onMatch(org.apache.calcite.plan.RelOptRuleCall)"><code>RelOptRule.onMatch(RelOptRuleCall)</code></a> subsequently not generate any
successors.
<p>The following script is useful to identify rules which commonly
produce no successors. You should override this method for these rules:
<blockquote>
<pre><code>awk '
/Apply rule/ {rule=$4; ruleCount[rule]++;}
/generated 0 successors/ {ruleMiss[rule]++;}
END {
printf "%-30s %s %s\n", "Rule", "Fire", "Miss";
for (i in ruleCount) {
printf "%-30s %5d %5d\n", i, ruleCount[i], ruleMiss[i];
}
} ' FarragoTrace.log</code></pre>
</blockquote></div>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="../../plan/RelOptRule.html#matches(org.apache.calcite.plan.RelOptRuleCall)">matches</a></code>&nbsp;in class&nbsp;<code><a href="../../plan/RelOptRule.html" title="class in org.apache.calcite.plan">RelOptRule</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>call</code> - Rule call which has been determined to match all operands of
this rule</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>whether this RelOptRule matches a given RelOptRuleCall</dd>
</dl>
</li>
</ul>
<a id="onMatch(org.apache.calcite.plan.RelOptRuleCall)">
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<h4>onMatch</h4>
<pre class="methodSignature">public&nbsp;void&nbsp;onMatch&#8203;(<a href="../../plan/RelOptRuleCall.html" title="class in org.apache.calcite.plan">RelOptRuleCall</a>&nbsp;ruleCall)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="../../plan/RelOptRule.html#onMatch(org.apache.calcite.plan.RelOptRuleCall)">RelOptRule</a></code></span></div>
<div class="block">Receives notification about a rule match. At the time that this method is
called, <a href="../../plan/RelOptRuleCall.html#rels"><code>call.rels</code></a> holds the set of relational
expressions which match the operands to the rule; <code>
call.rels[0]</code> is the root expression.
<p>Typically a rule would check that the nodes are valid matches, creates
a new expression, then calls back <a href="../../plan/RelOptRuleCall.html#transformTo(org.apache.calcite.rel.RelNode,java.util.Map)"><code>RelOptRuleCall.transformTo(org.apache.calcite.rel.RelNode, java.util.Map&lt;org.apache.calcite.rel.RelNode, org.apache.calcite.rel.RelNode&gt;)</code></a> to
register the expression.</p></div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../plan/RelOptRule.html#onMatch(org.apache.calcite.plan.RelOptRuleCall)">onMatch</a></code>&nbsp;in class&nbsp;<code><a href="../../plan/RelOptRule.html" title="class in org.apache.calcite.plan">RelOptRule</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>ruleCall</code> - Rule call</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../plan/RelOptRule.html#matches(org.apache.calcite.plan.RelOptRuleCall)"><code>RelOptRule.matches(RelOptRuleCall)</code></a></dd>
</dl>
</li>
</ul>
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<h4>containsAvgStddevVarCall</h4>
<pre class="methodSignature">private&nbsp;boolean&nbsp;containsAvgStddevVarCall&#8203;(java.util.List&lt;<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>&gt;&nbsp;aggCallList)</pre>
<div class="block">Returns whether any of the aggregates are calls to AVG, STDDEV_*, VAR_*.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>aggCallList</code> - List of aggregate calls</dd>
</dl>
</li>
</ul>
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<h4>isReducible</h4>
<pre class="methodSignature">private&nbsp;boolean&nbsp;isReducible&#8203;(<a href="../../sql/SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a>&nbsp;kind)</pre>
<div class="block">Returns whether the aggregate call is a reducible function</div>
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<h4>reduceAggs</h4>
<pre class="methodSignature">private&nbsp;void&nbsp;reduceAggs&#8203;(<a href="../../plan/RelOptRuleCall.html" title="class in org.apache.calcite.plan">RelOptRuleCall</a>&nbsp;ruleCall,
<a href="../core/Aggregate.html" title="class in org.apache.calcite.rel.core">Aggregate</a>&nbsp;oldAggRel)</pre>
<div class="block">Reduces calls to functions AVG, SUM, STDDEV_POP, STDDEV_SAMP, VAR_POP,
VAR_SAMP, COVAR_POP, COVAR_SAMP, REGR_SXX, REGR_SYY if the function is
present in <a href="#functionsToReduce"><code>functionsToReduce</code></a>
<p>It handles newly generated common subexpressions since this was done
at the sql2rel stage.</div>
</li>
</ul>
<a id="reduceAgg(org.apache.calcite.rel.core.Aggregate,org.apache.calcite.rel.core.AggregateCall,java.util.List,java.util.Map,java.util.List)">
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<h4>reduceAgg</h4>
<pre class="methodSignature">private&nbsp;<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;reduceAgg&#8203;(<a href="../core/Aggregate.html" title="class in org.apache.calcite.rel.core">Aggregate</a>&nbsp;oldAggRel,
<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>&nbsp;oldCall,
java.util.List&lt;<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>&gt;&nbsp;newCalls,
java.util.Map&lt;<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>,&#8203;<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;aggCallMapping,
java.util.List&lt;<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;inputExprs)</pre>
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<pre class="methodSignature">private&nbsp;<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>&nbsp;createAggregateCallWithBinding&#8203;(<a href="../type/RelDataTypeFactory.html" title="interface in org.apache.calcite.rel.type">RelDataTypeFactory</a>&nbsp;typeFactory,
<a href="../../sql/SqlAggFunction.html" title="class in org.apache.calcite.sql">SqlAggFunction</a>&nbsp;aggFunction,
<a href="../type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;operandType,
<a href="../core/Aggregate.html" title="class in org.apache.calcite.rel.core">Aggregate</a>&nbsp;oldAggRel,
<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>&nbsp;oldCall,
int&nbsp;argOrdinal,
int&nbsp;filter)</pre>
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<h4>reduceAvg</h4>
<pre class="methodSignature">private&nbsp;<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;reduceAvg&#8203;(<a href="../core/Aggregate.html" title="class in org.apache.calcite.rel.core">Aggregate</a>&nbsp;oldAggRel,
<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>&nbsp;oldCall,
java.util.List&lt;<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>&gt;&nbsp;newCalls,
java.util.Map&lt;<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>,&#8203;<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;aggCallMapping,
java.util.List&lt;<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;inputExprs)</pre>
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<h4>reduceSum</h4>
<pre class="methodSignature">private&nbsp;<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;reduceSum&#8203;(<a href="../core/Aggregate.html" title="class in org.apache.calcite.rel.core">Aggregate</a>&nbsp;oldAggRel,
<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>&nbsp;oldCall,
java.util.List&lt;<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>&gt;&nbsp;newCalls,
java.util.Map&lt;<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>,&#8203;<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;aggCallMapping)</pre>
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<h4>reduceStddev</h4>
<pre class="methodSignature">private&nbsp;<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;reduceStddev&#8203;(<a href="../core/Aggregate.html" title="class in org.apache.calcite.rel.core">Aggregate</a>&nbsp;oldAggRel,
<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>&nbsp;oldCall,
boolean&nbsp;biased,
boolean&nbsp;sqrt,
java.util.List&lt;<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>&gt;&nbsp;newCalls,
java.util.Map&lt;<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>,&#8203;<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;aggCallMapping,
java.util.List&lt;<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;inputExprs)</pre>
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<pre class="methodSignature">private&nbsp;<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;getSumAggregatedRexNode&#8203;(<a href="../core/Aggregate.html" title="class in org.apache.calcite.rel.core">Aggregate</a>&nbsp;oldAggRel,
<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>&nbsp;oldCall,
java.util.List&lt;<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>&gt;&nbsp;newCalls,
java.util.Map&lt;<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>,&#8203;<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;aggCallMapping,
<a href="../../rex/RexBuilder.html" title="class in org.apache.calcite.rex">RexBuilder</a>&nbsp;rexBuilder,
int&nbsp;argOrdinal,
int&nbsp;filterArg)</pre>
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<pre class="methodSignature">private&nbsp;<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;getSumAggregatedRexNodeWithBinding&#8203;(<a href="../core/Aggregate.html" title="class in org.apache.calcite.rel.core">Aggregate</a>&nbsp;oldAggRel,
<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>&nbsp;oldCall,
java.util.List&lt;<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>&gt;&nbsp;newCalls,
java.util.Map&lt;<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>,&#8203;<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;aggCallMapping,
<a href="../type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;operandType,
int&nbsp;argOrdinal,
int&nbsp;filter)</pre>
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<pre class="methodSignature">private&nbsp;<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;getRegrCountRexNode&#8203;(<a href="../core/Aggregate.html" title="class in org.apache.calcite.rel.core">Aggregate</a>&nbsp;oldAggRel,
<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>&nbsp;oldCall,
java.util.List&lt;<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>&gt;&nbsp;newCalls,
java.util.Map&lt;<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>,&#8203;<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;aggCallMapping,
<a href="../../util/ImmutableIntList.html" title="class in org.apache.calcite.util">ImmutableIntList</a>&nbsp;argOrdinals,
com.google.common.collect.ImmutableList&lt;<a href="../type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&gt;&nbsp;operandTypes,
int&nbsp;filterArg)</pre>
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<pre class="methodSignature">private&nbsp;<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;reduceRegrSzz&#8203;(<a href="../core/Aggregate.html" title="class in org.apache.calcite.rel.core">Aggregate</a>&nbsp;oldAggRel,
<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>&nbsp;oldCall,
java.util.List&lt;<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>&gt;&nbsp;newCalls,
java.util.Map&lt;<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>,&#8203;<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;aggCallMapping,
java.util.List&lt;<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;inputExprs,
int&nbsp;xIndex,
int&nbsp;yIndex,
int&nbsp;nullFilterIndex)</pre>
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<pre class="methodSignature">private&nbsp;<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&nbsp;reduceCovariance&#8203;(<a href="../core/Aggregate.html" title="class in org.apache.calcite.rel.core">Aggregate</a>&nbsp;oldAggRel,
<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>&nbsp;oldCall,
boolean&nbsp;biased,
java.util.List&lt;<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>&gt;&nbsp;newCalls,
java.util.Map&lt;<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>,&#8203;<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;aggCallMapping,
java.util.List&lt;<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;inputExprs)</pre>
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<a id="lookupOrAdd(java.util.List,java.lang.Object)">
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<h4>lookupOrAdd</h4>
<pre class="methodSignature">private static&nbsp;&lt;T&gt;&nbsp;int&nbsp;lookupOrAdd&#8203;(java.util.List&lt;T&gt;&nbsp;list,
T&nbsp;element)</pre>
<div class="block">Finds the ordinal of an element in a list, or adds it.</div>
<dl>
<dt><span class="paramLabel">Type Parameters:</span></dt>
<dd><code>T</code> - Element type</dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>list</code> - List</dd>
<dd><code>element</code> - Element to lookup or add</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Ordinal of element in list</dd>
</dl>
</li>
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<h4>newAggregateRel</h4>
<pre class="methodSignature">protected&nbsp;void&nbsp;newAggregateRel&#8203;(<a href="../../tools/RelBuilder.html" title="class in org.apache.calcite.tools">RelBuilder</a>&nbsp;relBuilder,
<a href="../core/Aggregate.html" title="class in org.apache.calcite.rel.core">Aggregate</a>&nbsp;oldAggregate,
java.util.List&lt;<a href="../core/AggregateCall.html" title="class in org.apache.calcite.rel.core">AggregateCall</a>&gt;&nbsp;newCalls)</pre>
<div class="block">Do a shallow clone of oldAggRel and update aggCalls. Could be refactored
into Aggregate and subclasses - but it's only needed for some
subclasses.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>relBuilder</code> - Builder of relational expressions; at the top of its
stack is its input</dd>
<dd><code>oldAggregate</code> - LogicalAggregate to clone.</dd>
<dd><code>newCalls</code> - New list of AggregateCalls</dd>
</dl>
</li>
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<a id="newCalcRel(org.apache.calcite.tools.RelBuilder,org.apache.calcite.rel.type.RelDataType,java.util.List)">
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<h4>newCalcRel</h4>
<pre class="methodSignature">protected&nbsp;void&nbsp;newCalcRel&#8203;(<a href="../../tools/RelBuilder.html" title="class in org.apache.calcite.tools">RelBuilder</a>&nbsp;relBuilder,
<a href="../type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;rowType,
java.util.List&lt;<a href="../../rex/RexNode.html" title="class in org.apache.calcite.rex">RexNode</a>&gt;&nbsp;exprs)</pre>
<div class="block">Add a calc with the expressions to compute the original agg calls from the
decomposed ones.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>relBuilder</code> - Builder of relational expressions; at the top of its
stack is its input</dd>
<dd><code>rowType</code> - The output row type of the original aggregate.</dd>
<dd><code>exprs</code> - The expressions to compute the original agg calls.</dd>
</dl>
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</ul>
<a id="getFieldType(org.apache.calcite.rel.RelNode,int)">
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<h4>getFieldType</h4>
<pre class="methodSignature">private&nbsp;<a href="../type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;getFieldType&#8203;(<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;relNode,
int&nbsp;i)</pre>
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