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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 MultiJoinProjectTransposeRule" class="title">Class MultiJoinProjectTransposeRule</h2>
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<li><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">java.lang.Object</a></li>
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<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><a href="../../plan/RelRule.html" title="class in org.apache.calcite.plan">org.apache.calcite.plan.RelRule</a>&lt;<a href="JoinProjectTransposeRule.Config.html" title="interface in org.apache.calcite.rel.rules">JoinProjectTransposeRule.Config</a>&gt;</li>
<li>
<ul class="inheritance">
<li><a href="JoinProjectTransposeRule.html" title="class in org.apache.calcite.rel.rules">org.apache.calcite.rel.rules.JoinProjectTransposeRule</a></li>
<li>
<ul class="inheritance">
<li>org.apache.calcite.rel.rules.MultiJoinProjectTransposeRule</li>
</ul>
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<dd><code><a href="TransformationRule.html" title="interface in org.apache.calcite.rel.rules">TransformationRule</a></code></dd>
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<pre>public class <span class="typeNameLabel">MultiJoinProjectTransposeRule</span>
extends <a href="JoinProjectTransposeRule.html" title="class in org.apache.calcite.rel.rules">JoinProjectTransposeRule</a></pre>
<div class="block">MultiJoinProjectTransposeRule implements the rule for pulling
<a href="../logical/LogicalProject.html" title="class in org.apache.calcite.rel.logical"><code>LogicalProject</code></a>s that are on top of a
<a href="MultiJoin.html" title="class in org.apache.calcite.rel.rules"><code>MultiJoin</code></a> and beneath a
<a href="../logical/LogicalJoin.html" title="class in org.apache.calcite.rel.logical"><code>LogicalJoin</code></a> so the
<a href="../logical/LogicalProject.html" title="class in org.apache.calcite.rel.logical"><code>LogicalProject</code></a> appears above the
<a href="../logical/LogicalJoin.html" title="class in org.apache.calcite.rel.logical"><code>LogicalJoin</code></a>.
<p>In the process of doing
so, also save away information about the respective fields that are
referenced in the expressions in the
<a href="../logical/LogicalProject.html" title="class in org.apache.calcite.rel.logical"><code>LogicalProject</code></a> we're pulling up, as
well as the join condition, in the resultant <a href="MultiJoin.html" title="class in org.apache.calcite.rel.rules"><code>MultiJoin</code></a>s
<p>For example, if we have the following sub-query:
<blockquote><pre>
(select X.x1, Y.y1 from X, Y
where X.x2 = Y.y2 and X.x3 = 1 and Y.y3 = 2)</pre></blockquote>
<p>The <a href="MultiJoin.html" title="class in org.apache.calcite.rel.rules"><code>MultiJoin</code></a> associated with (X, Y) associates x1 with X and
y1 with Y. Although x3 and y3 need to be read due to the filters, they are
not required after the row scan has completed and therefore are not saved.
The join fields, x2 and y2, are also tracked separately.
<p>Note that by only pulling up projects that are on top of
<a href="MultiJoin.html" title="class in org.apache.calcite.rel.rules"><code>MultiJoin</code></a>s, we preserve projections on top of row scans.
<p>See the superclass for details on restrictions regarding which
<a href="../logical/LogicalProject.html" title="class in org.apache.calcite.rel.logical"><code>LogicalProject</code></a>s cannot be pulled.</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="CoreRules.html#MULTI_JOIN_BOTH_PROJECT"><code>CoreRules.MULTI_JOIN_BOTH_PROJECT</code></a>,
<a href="CoreRules.html#MULTI_JOIN_LEFT_PROJECT"><code>CoreRules.MULTI_JOIN_LEFT_PROJECT</code></a>,
<a href="CoreRules.html#MULTI_JOIN_RIGHT_PROJECT"><code>CoreRules.MULTI_JOIN_RIGHT_PROJECT</code></a></dd>
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<th class="colFirst" scope="col">Modifier and Type</th>
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<td class="colFirst"><code>static interface&nbsp;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="MultiJoinProjectTransposeRule.Config.html" title="interface in org.apache.calcite.rel.rules">MultiJoinProjectTransposeRule.Config</a></span></code></th>
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<div class="block">Rule configuration.</div>
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<h3>Nested classes/interfaces inherited from class&nbsp;org.apache.calcite.plan.<a href="../../plan/RelRule.html" title="class in org.apache.calcite.plan">RelRule</a></h3>
<code><a href="../../plan/RelRule.Done.html" title="interface in org.apache.calcite.plan">RelRule.Done</a>, <a href="../../plan/RelRule.MatchHandler.html" title="interface in org.apache.calcite.plan">RelRule.MatchHandler</a>&lt;<a href="../../plan/RelRule.MatchHandler.html" title="type parameter in RelRule.MatchHandler">R</a> extends <a href="../../plan/RelOptRule.html" title="class in org.apache.calcite.plan">RelOptRule</a>&gt;, <a href="../../plan/RelRule.OperandBuilder.html" title="interface in org.apache.calcite.plan">RelRule.OperandBuilder</a>, <a href="../../plan/RelRule.OperandDetailBuilder.html" title="interface in org.apache.calcite.plan">RelRule.OperandDetailBuilder</a>&lt;<a href="../../plan/RelRule.OperandDetailBuilder.html" title="type parameter in RelRule.OperandDetailBuilder">R</a> extends <a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&gt;, <a href="../../plan/RelRule.OperandTransform.html" title="interface in org.apache.calcite.plan">RelRule.OperandTransform</a></code></li>
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<h3>Nested classes/interfaces 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.ConverterRelOptRuleOperand.html" title="class in org.apache.calcite.plan">RelOptRule.ConverterRelOptRuleOperand</a></code></li>
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<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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<td class="colFirst"><code>&nbsp;</code></td>
<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(org.apache.calcite.plan.RelOptRuleOperand,java.lang.String)">MultiJoinProjectTransposeRule</a></span>&#8203;(<a href="../../plan/RelOptRuleOperand.html" title="class in org.apache.calcite.plan">RelOptRuleOperand</a>&nbsp;operand,
<a href="https://docs.oracle.com/javase/9/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;description)</code></th>
<td class="colLast">
<div class="block"><span class="deprecatedLabel">Deprecated.</span></div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>&nbsp;</code></td>
<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(org.apache.calcite.plan.RelOptRuleOperand,org.apache.calcite.tools.RelBuilderFactory,java.lang.String)">MultiJoinProjectTransposeRule</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,
<a href="https://docs.oracle.com/javase/9/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;description)</code></th>
<td class="colLast">
<div class="block"><span class="deprecatedLabel">Deprecated.</span></div>
</td>
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<tr class="altColor">
<td class="colFirst"><code>protected </code></td>
<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(org.apache.calcite.rel.rules.MultiJoinProjectTransposeRule.Config)">MultiJoinProjectTransposeRule</a></span>&#8203;(<a href="MultiJoinProjectTransposeRule.Config.html" title="interface in org.apache.calcite.rel.rules">MultiJoinProjectTransposeRule.Config</a>&nbsp;config)</code></th>
<td class="colLast">
<div class="block">Creates a MultiJoinProjectTransposeRule.</div>
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<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colSecond" scope="col">Method</th>
<th class="colLast" scope="col">Description</th>
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<td class="colFirst"><code>protected <a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getProjectChild(org.apache.calcite.plan.RelOptRuleCall,org.apache.calcite.rel.core.Project,boolean)">getProjectChild</a></span>&#8203;(<a href="../../plan/RelOptRuleCall.html" title="class in org.apache.calcite.plan">RelOptRuleCall</a>&nbsp;call,
<a href="../core/Project.html" title="class in org.apache.calcite.rel.core">Project</a>&nbsp;project,
boolean&nbsp;leftChild)</code></th>
<td class="colLast">
<div class="block">Returns the child of the project that will be used as input into the new
LogicalJoin once the projects are pulled above the LogicalJoin.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>protected <a href="../core/Project.html" title="class in org.apache.calcite.rel.core">Project</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getRightChild(org.apache.calcite.plan.RelOptRuleCall)">getRightChild</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 the Project corresponding to the right child.</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>protected boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#hasLeftChild(org.apache.calcite.plan.RelOptRuleCall)">hasLeftChild</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 the rule was invoked with a left project child.</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>protected boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#hasRightChild(org.apache.calcite.plan.RelOptRuleCall)">hasRightChild</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 the rule was invoked with 2 children.</div>
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<h3>Methods inherited from class&nbsp;org.apache.calcite.rel.rules.<a href="JoinProjectTransposeRule.html" title="class in org.apache.calcite.rel.rules">JoinProjectTransposeRule</a></h3>
<code><a href="JoinProjectTransposeRule.html#createProjectExprs(org.apache.calcite.rel.core.Project,org.apache.calcite.rel.RelNode,int,org.apache.calcite.rex.RexBuilder,java.util.List,java.util.List)">createProjectExprs</a>, <a href="JoinProjectTransposeRule.html#onMatch(org.apache.calcite.plan.RelOptRuleCall)">onMatch</a></code></li>
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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#matches(org.apache.calcite.plan.RelOptRuleCall)">matches</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.<a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a></h3>
<code><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang" class="externalLink">clone</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang" class="externalLink">finalize</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang" class="externalLink">getClass</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang" class="externalLink">notify</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang" class="externalLink">notifyAll</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang" class="externalLink">wait</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang" class="externalLink">wait</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#wait(long,int)" title="class or interface in java.lang" class="externalLink">wait</a></code></li>
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<h3>Constructor Detail</h3>
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<h4>MultiJoinProjectTransposeRule</h4>
<pre>protected&nbsp;MultiJoinProjectTransposeRule&#8203;(<a href="MultiJoinProjectTransposeRule.Config.html" title="interface in org.apache.calcite.rel.rules">MultiJoinProjectTransposeRule.Config</a>&nbsp;config)</pre>
<div class="block">Creates a MultiJoinProjectTransposeRule.</div>
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<h4>MultiJoinProjectTransposeRule</h4>
<pre><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang" class="externalLink">@Deprecated</a>
public&nbsp;MultiJoinProjectTransposeRule&#8203;(<a href="../../plan/RelOptRuleOperand.html" title="class in org.apache.calcite.plan">RelOptRuleOperand</a>&nbsp;operand,
<a href="https://docs.oracle.com/javase/9/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;description)</pre>
<div class="deprecationBlock"><span class="deprecatedLabel">Deprecated.</span></div>
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<h4>MultiJoinProjectTransposeRule</h4>
<pre><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang" class="externalLink">@Deprecated</a>
public&nbsp;MultiJoinProjectTransposeRule&#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,
<a href="https://docs.oracle.com/javase/9/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;description)</pre>
<div class="deprecationBlock"><span class="deprecatedLabel">Deprecated.</span></div>
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<h4>hasLeftChild</h4>
<pre class="methodSignature">protected&nbsp;boolean&nbsp;hasLeftChild&#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="JoinProjectTransposeRule.html#hasLeftChild(org.apache.calcite.plan.RelOptRuleCall)">JoinProjectTransposeRule</a></code></span></div>
<div class="block">Returns whether the rule was invoked with a left project child.</div>
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<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="JoinProjectTransposeRule.html#hasLeftChild(org.apache.calcite.plan.RelOptRuleCall)">hasLeftChild</a></code>&nbsp;in class&nbsp;<code><a href="JoinProjectTransposeRule.html" title="class in org.apache.calcite.rel.rules">JoinProjectTransposeRule</a></code></dd>
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<h4>hasRightChild</h4>
<pre class="methodSignature">protected&nbsp;boolean&nbsp;hasRightChild&#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="JoinProjectTransposeRule.html#hasRightChild(org.apache.calcite.plan.RelOptRuleCall)">JoinProjectTransposeRule</a></code></span></div>
<div class="block">Returns whether the rule was invoked with 2 children.</div>
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<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="JoinProjectTransposeRule.html#hasRightChild(org.apache.calcite.plan.RelOptRuleCall)">hasRightChild</a></code>&nbsp;in class&nbsp;<code><a href="JoinProjectTransposeRule.html" title="class in org.apache.calcite.rel.rules">JoinProjectTransposeRule</a></code></dd>
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<h4>getRightChild</h4>
<pre class="methodSignature">protected&nbsp;<a href="../core/Project.html" title="class in org.apache.calcite.rel.core">Project</a>&nbsp;getRightChild&#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="JoinProjectTransposeRule.html#getRightChild(org.apache.calcite.plan.RelOptRuleCall)">JoinProjectTransposeRule</a></code></span></div>
<div class="block">Returns the Project corresponding to the right child.</div>
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<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="JoinProjectTransposeRule.html#getRightChild(org.apache.calcite.plan.RelOptRuleCall)">getRightChild</a></code>&nbsp;in class&nbsp;<code><a href="JoinProjectTransposeRule.html" title="class in org.apache.calcite.rel.rules">JoinProjectTransposeRule</a></code></dd>
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<h4>getProjectChild</h4>
<pre class="methodSignature">protected&nbsp;<a href="../RelNode.html" title="interface in org.apache.calcite.rel">RelNode</a>&nbsp;getProjectChild&#8203;(<a href="../../plan/RelOptRuleCall.html" title="class in org.apache.calcite.plan">RelOptRuleCall</a>&nbsp;call,
<a href="../core/Project.html" title="class in org.apache.calcite.rel.core">Project</a>&nbsp;project,
boolean&nbsp;leftChild)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="JoinProjectTransposeRule.html#getProjectChild(org.apache.calcite.plan.RelOptRuleCall,org.apache.calcite.rel.core.Project,boolean)">JoinProjectTransposeRule</a></code></span></div>
<div class="block">Returns the child of the project that will be used as input into the new
LogicalJoin once the projects are pulled above the LogicalJoin.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="JoinProjectTransposeRule.html#getProjectChild(org.apache.calcite.plan.RelOptRuleCall,org.apache.calcite.rel.core.Project,boolean)">getProjectChild</a></code>&nbsp;in class&nbsp;<code><a href="JoinProjectTransposeRule.html" title="class in org.apache.calcite.rel.rules">JoinProjectTransposeRule</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>call</code> - RelOptRuleCall</dd>
<dd><code>project</code> - project RelNode</dd>
<dd><code>leftChild</code> - true if the project corresponds to the left projection</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>child of the project that will be used as input into the new
LogicalJoin once the projects are pulled above the LogicalJoin</dd>
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