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<div class="subTitle">org.apache.beam.sdk.extensions.sql.impl.rel</div>
<h2 title="Class BeamUnionRel" class="title">Class BeamUnionRel</h2>
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<ul class="inheritance">
<li>java.lang.Object</li>
<li>
<ul class="inheritance">
<li>org.apache.calcite.rel.AbstractRelNode</li>
<li>
<ul class="inheritance">
<li>org.apache.calcite.rel.core.SetOp</li>
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<ul class="inheritance">
<li>org.apache.calcite.rel.core.Union</li>
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<ul class="inheritance">
<li>org.apache.beam.sdk.extensions.sql.impl.rel.BeamUnionRel</li>
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<dt>All Implemented Interfaces:</dt>
<dd>java.lang.Cloneable, <a href="../../../../../../../../org/apache/beam/sdk/extensions/sql/impl/rel/BeamRelNode.html" title="interface in org.apache.beam.sdk.extensions.sql.impl.rel">BeamRelNode</a>, org.apache.calcite.plan.RelOptNode, org.apache.calcite.rel.RelNode</dd>
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<pre>public class <span class="typeNameLabel">BeamUnionRel</span>
extends org.apache.calcite.rel.core.Union
implements <a href="../../../../../../../../org/apache/beam/sdk/extensions/sql/impl/rel/BeamRelNode.html" title="interface in org.apache.beam.sdk.extensions.sql.impl.rel">BeamRelNode</a></pre>
<div class="block"><a href="../../../../../../../../org/apache/beam/sdk/extensions/sql/impl/rel/BeamRelNode.html" title="interface in org.apache.beam.sdk.extensions.sql.impl.rel"><code>BeamRelNode</code></a> to replace a <code>Union</code>.
<p><code>BeamUnionRel</code> needs the input of it have the same <a href="../../../../../../../../org/apache/beam/sdk/transforms/windowing/WindowFn.html" title="class in org.apache.beam.sdk.transforms.windowing"><code>WindowFn</code></a>. From the SQL
perspective, two cases are supported:
<p>1) Do not use <code>grouped window function</code>:
<pre><code>
select * from person UNION select * from person
</code></pre>
<p>2) Use the same <code>grouped window function</code>, with the same param:
<pre><code>
select id, count(*) from person
group by id, TUMBLE(order_time, INTERVAL '1' HOUR)
UNION
select * from person
group by id, TUMBLE(order_time, INTERVAL '1' HOUR)
</code></pre>
<p>Inputs with different group functions are NOT supported:
<pre><code>
select id, count(*) from person
group by id, TUMBLE(order_time, INTERVAL '1' HOUR)
UNION
select * from person
group by id, TUMBLE(order_time, INTERVAL '2' HOUR)
</code></pre></div>
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<h3>Nested classes/interfaces inherited from interface&nbsp;org.apache.calcite.rel.RelNode</h3>
<code>org.apache.calcite.rel.RelNode.Context</code></li>
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<code>all, inputs, kind</code></li>
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<code>digest, id, rowType, traitSet</code></li>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/beam/sdk/extensions/sql/impl/rel/BeamUnionRel.html#BeamUnionRel-org.apache.calcite.plan.RelOptCluster-org.apache.calcite.plan.RelTraitSet-java.util.List-boolean-">BeamUnionRel</a></span>(org.apache.calcite.plan.RelOptCluster&nbsp;cluster,
org.apache.calcite.plan.RelTraitSet&nbsp;traits,
java.util.List&lt;org.apache.calcite.rel.RelNode&gt;&nbsp;inputs,
boolean&nbsp;all)</code>&nbsp;</td>
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<caption><span id="t0" class="activeTableTab"><span>All Methods</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>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
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<td class="colFirst"><code><a href="../../../../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms">PTransform</a>&lt;<a href="../../../../../../../../org/apache/beam/sdk/values/PCollectionList.html" title="class in org.apache.beam.sdk.values">PCollectionList</a>&lt;<a href="../../../../../../../../org/apache/beam/sdk/values/Row.html" title="class in org.apache.beam.sdk.values">Row</a>&gt;,<a href="../../../../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values">PCollection</a>&lt;<a href="../../../../../../../../org/apache/beam/sdk/values/Row.html" title="class in org.apache.beam.sdk.values">Row</a>&gt;&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/beam/sdk/extensions/sql/impl/rel/BeamUnionRel.html#buildPTransform--">buildPTransform</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>org.apache.calcite.rel.core.SetOp</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/beam/sdk/extensions/sql/impl/rel/BeamUnionRel.html#copy-org.apache.calcite.plan.RelTraitSet-java.util.List-boolean-">copy</a></span>(org.apache.calcite.plan.RelTraitSet&nbsp;traitSet,
java.util.List&lt;org.apache.calcite.rel.RelNode&gt;&nbsp;inputs,
boolean&nbsp;all)</code>&nbsp;</td>
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<h3>Methods inherited from class&nbsp;org.apache.calcite.rel.core.Union</h3>
<code>estimateRowCount, estimateRowCount</code></li>
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<h3>Methods inherited from class&nbsp;org.apache.calcite.rel.core.SetOp</h3>
<code>copy, deriveRowType, explainTerms, getInputs, isHomogeneous, replaceInput</code></li>
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<h3>Methods inherited from class&nbsp;org.apache.calcite.rel.AbstractRelNode</h3>
<code>accept, accept, childrenAccept, collectVariablesSet, collectVariablesUsed, computeDigest, computeSelfCost, computeSelfCost, explain, getChildExps, getCluster, getCollationList, getConvention, getCorrelVariable, getDescription, getDigest, getExpectedInputRowType, getId, getInput, getQuery, getRelTypeName, getRows, getRowType, getTable, getTraitSet, getVariablesSet, getVariablesStopped, isDistinct, isKey, isValid, isValid, metadata, onRegister, recomputeDigest, register, sole, toString</code></li>
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<code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait</code></li>
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<h3>Methods inherited from interface&nbsp;org.apache.beam.sdk.extensions.sql.impl.rel.<a href="../../../../../../../../org/apache/beam/sdk/extensions/sql/impl/rel/BeamRelNode.html" title="interface in org.apache.beam.sdk.extensions.sql.impl.rel">BeamRelNode</a></h3>
<code><a href="../../../../../../../../org/apache/beam/sdk/extensions/sql/impl/rel/BeamRelNode.html#getPCollectionInputs--">getPCollectionInputs</a>, <a href="../../../../../../../../org/apache/beam/sdk/extensions/sql/impl/rel/BeamRelNode.html#getPipelineOptions--">getPipelineOptions</a></code></li>
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<h3>Methods inherited from interface&nbsp;org.apache.calcite.rel.RelNode</h3>
<code>accept, accept, childrenAccept, collectVariablesSet, collectVariablesUsed, computeSelfCost, computeSelfCost, copy, estimateRowCount, explain, getChildExps, getCollationList, getConvention, getCorrelVariable, getExpectedInputRowType, getInput, getInputs, getQuery, getRelTypeName, getRows, getRowType, getTable, getVariablesSet, getVariablesStopped, isDistinct, isKey, isValid, isValid, metadata, onRegister, recomputeDigest, register, replaceInput</code></li>
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<h3>Methods inherited from interface&nbsp;org.apache.calcite.plan.RelOptNode</h3>
<code>getCluster, getDescription, getDigest, getId, getTraitSet</code></li>
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<h3>Constructor Detail</h3>
<a name="BeamUnionRel-org.apache.calcite.plan.RelOptCluster-org.apache.calcite.plan.RelTraitSet-java.util.List-boolean-">
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<h4>BeamUnionRel</h4>
<pre>public&nbsp;BeamUnionRel(org.apache.calcite.plan.RelOptCluster&nbsp;cluster,
org.apache.calcite.plan.RelTraitSet&nbsp;traits,
java.util.List&lt;org.apache.calcite.rel.RelNode&gt;&nbsp;inputs,
boolean&nbsp;all)</pre>
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<h4>copy</h4>
<pre>public&nbsp;org.apache.calcite.rel.core.SetOp&nbsp;copy(org.apache.calcite.plan.RelTraitSet&nbsp;traitSet,
java.util.List&lt;org.apache.calcite.rel.RelNode&gt;&nbsp;inputs,
boolean&nbsp;all)</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code>copy</code>&nbsp;in class&nbsp;<code>org.apache.calcite.rel.core.SetOp</code></dd>
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<h4>buildPTransform</h4>
<pre>public&nbsp;<a href="../../../../../../../../org/apache/beam/sdk/transforms/PTransform.html" title="class in org.apache.beam.sdk.transforms">PTransform</a>&lt;<a href="../../../../../../../../org/apache/beam/sdk/values/PCollectionList.html" title="class in org.apache.beam.sdk.values">PCollectionList</a>&lt;<a href="../../../../../../../../org/apache/beam/sdk/values/Row.html" title="class in org.apache.beam.sdk.values">Row</a>&gt;,<a href="../../../../../../../../org/apache/beam/sdk/values/PCollection.html" title="class in org.apache.beam.sdk.values">PCollection</a>&lt;<a href="../../../../../../../../org/apache/beam/sdk/values/Row.html" title="class in org.apache.beam.sdk.values">Row</a>&gt;&gt;&nbsp;buildPTransform()</pre>
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<dd><code><a href="../../../../../../../../org/apache/beam/sdk/extensions/sql/impl/rel/BeamRelNode.html#buildPTransform--">buildPTransform</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../../../../org/apache/beam/sdk/extensions/sql/impl/rel/BeamRelNode.html" title="interface in org.apache.beam.sdk.extensions.sql.impl.rel">BeamRelNode</a></code></dd>
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