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<div class="subTitle">org.apache.beam.sdk.extensions.sql.zetasql.unnest</div>
<h2 title="Class ZetaSqlUnnest" class="title">Class ZetaSqlUnnest</h2>
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<ul class="inheritance">
<li>java.lang.Object</li>
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<li>org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.AbstractRelNode</li>
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<li>org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.SingleRel</li>
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<ul class="inheritance">
<li>org.apache.beam.sdk.extensions.sql.zetasql.unnest.ZetaSqlUnnest</li>
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<dt>All Implemented Interfaces:</dt>
<dd>java.lang.Cloneable, org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.plan.RelOptNode, org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.RelNode</dd>
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<dt>Direct Known Subclasses:</dt>
<dd><a href="../../../../../../../../org/apache/beam/sdk/extensions/sql/zetasql/unnest/BeamZetaSqlUncollectRel.html" title="class in org.apache.beam.sdk.extensions.sql.zetasql.unnest">BeamZetaSqlUncollectRel</a>, <a href="../../../../../../../../org/apache/beam/sdk/extensions/sql/zetasql/unnest/BeamZetaSqlUnnestRel.html" title="class in org.apache.beam.sdk.extensions.sql.zetasql.unnest">BeamZetaSqlUnnestRel</a></dd>
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<pre>public class <span class="typeNameLabel">ZetaSqlUnnest</span>
extends org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.SingleRel</pre>
<div class="block">This class is a copy of Uncollect.java in Calcite:
https://github.com/apache/calcite/blob/calcite-1.20.0/core/src/main/java/org/apache/calcite/rel/core/Uncollect.java
except that in deriveUncollectRowType() it does not unwrap array elements of struct type.
<p>Details of why unwrapping structs breaks ZetaSQL UNNEST syntax is in
https://issues.apache.org/jira/browse/BEAM-10896.</div>
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<h3>Nested classes/interfaces inherited from interface&nbsp;org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.RelNode</h3>
<code>org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.RelNode.Context</code></li>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Field and Description</th>
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<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/beam/sdk/extensions/sql/zetasql/unnest/ZetaSqlUnnest.html#withOrdinality">withOrdinality</a></span></code>&nbsp;</td>
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<code>input</code></li>
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<code>digest, id, rowType, traitSet</code></li>
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<th class="colOne" scope="col">Constructor and Description</th>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/beam/sdk/extensions/sql/zetasql/unnest/ZetaSqlUnnest.html#ZetaSqlUnnest-org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.RelInput-">ZetaSqlUnnest</a></span>(org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.RelInput&nbsp;input)</code>
<div class="block">Creates an Uncollect by parsing serialized output.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/beam/sdk/extensions/sql/zetasql/unnest/ZetaSqlUnnest.html#ZetaSqlUnnest-org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.plan.RelOptCluster-org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.plan.RelTraitSet-org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.RelNode-boolean-">ZetaSqlUnnest</a></span>(org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.plan.RelOptCluster&nbsp;cluster,
org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.plan.RelTraitSet&nbsp;traitSet,
org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.RelNode&nbsp;input,
boolean&nbsp;withOrdinality)</code>
<div class="block">Creates an Uncollect.</div>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
</tr>
<tr id="i0" class="altColor">
<td class="colFirst"><code>org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.RelNode</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/beam/sdk/extensions/sql/zetasql/unnest/ZetaSqlUnnest.html#copy-org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.plan.RelTraitSet-java.util.List-">copy</a></span>(org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.plan.RelTraitSet&nbsp;traitSet,
java.util.List&lt;org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.RelNode&gt;&nbsp;inputs)</code>&nbsp;</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.RelNode</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/beam/sdk/extensions/sql/zetasql/unnest/ZetaSqlUnnest.html#copy-org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.plan.RelTraitSet-org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.RelNode-">copy</a></span>(org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.plan.RelTraitSet&nbsp;traitSet,
org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.RelNode&nbsp;input)</code>&nbsp;</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>static <a href="../../../../../../../../org/apache/beam/sdk/extensions/sql/zetasql/unnest/ZetaSqlUnnest.html" title="class in org.apache.beam.sdk.extensions.sql.zetasql.unnest">ZetaSqlUnnest</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/beam/sdk/extensions/sql/zetasql/unnest/ZetaSqlUnnest.html#create-org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.plan.RelTraitSet-org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.RelNode-boolean-">create</a></span>(org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.plan.RelTraitSet&nbsp;traitSet,
org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.RelNode&nbsp;input,
boolean&nbsp;withOrdinality)</code>
<div class="block">Creates an Uncollect.</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>protected org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.type.RelDataType</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/beam/sdk/extensions/sql/zetasql/unnest/ZetaSqlUnnest.html#deriveRowType--">deriveRowType</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>static org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.type.RelDataType</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/beam/sdk/extensions/sql/zetasql/unnest/ZetaSqlUnnest.html#deriveUncollectRowType-org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.RelNode-boolean-">deriveUncollectRowType</a></span>(org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.RelNode&nbsp;rel,
boolean&nbsp;withOrdinality)</code>
<div class="block">Returns the row type returned by applying the 'UNNEST' operation to a relational expression.</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.RelWriter</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/beam/sdk/extensions/sql/zetasql/unnest/ZetaSqlUnnest.html#explainTerms-org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.RelWriter-">explainTerms</a></span>(org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.RelWriter&nbsp;pw)</code>&nbsp;</td>
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<h3>Methods inherited from class&nbsp;org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.SingleRel</h3>
<code>childrenAccept, estimateRowCount, getInput, getInputs, replaceInput</code></li>
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<h3>Methods inherited from class&nbsp;org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.AbstractRelNode</h3>
<code>accept, accept, collectVariablesSet, collectVariablesUsed, computeSelfCost, deepEquals, deepHashCode, equals, explain, getCluster, getConvention, getCorrelVariable, getDescription, getDigest, getExpectedInputRowType, getId, getInput, getRelDigest, getRelTypeName, getRowType, getTable, getTraitSet, getVariablesSet, hashCode, isEnforcer, isValid, metadata, onRegister, recomputeDigest, register, sole, toString</code></li>
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<h3>Methods inherited from class&nbsp;java.lang.Object</h3>
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<h3>Methods inherited from interface&nbsp;org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.RelNode</h3>
<code>explain, fieldIsNullable</code></li>
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<h4>withOrdinality</h4>
<pre>public final&nbsp;boolean withOrdinality</pre>
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<h3>Constructor Detail</h3>
<a name="ZetaSqlUnnest-org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.plan.RelOptCluster-org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.plan.RelTraitSet-org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.RelNode-boolean-">
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<h4>ZetaSqlUnnest</h4>
<pre>public&nbsp;ZetaSqlUnnest(org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.plan.RelOptCluster&nbsp;cluster,
org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.plan.RelTraitSet&nbsp;traitSet,
org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.RelNode&nbsp;input,
boolean&nbsp;withOrdinality)</pre>
<div class="block">Creates an Uncollect.
<p>Use <a href="../../../../../../../../org/apache/beam/sdk/extensions/sql/zetasql/unnest/ZetaSqlUnnest.html#create-org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.plan.RelTraitSet-org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.RelNode-boolean-"><code>create(org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.plan.RelTraitSet, org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.RelNode, boolean)</code></a> unless you know what you're doing.</div>
</li>
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<h4>ZetaSqlUnnest</h4>
<pre>public&nbsp;ZetaSqlUnnest(org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.RelInput&nbsp;input)</pre>
<div class="block">Creates an Uncollect by parsing serialized output.</div>
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<h3>Method Detail</h3>
<a name="create-org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.plan.RelTraitSet-org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.RelNode-boolean-">
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<h4>create</h4>
<pre>public static&nbsp;<a href="../../../../../../../../org/apache/beam/sdk/extensions/sql/zetasql/unnest/ZetaSqlUnnest.html" title="class in org.apache.beam.sdk.extensions.sql.zetasql.unnest">ZetaSqlUnnest</a>&nbsp;create(org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.plan.RelTraitSet&nbsp;traitSet,
org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.RelNode&nbsp;input,
boolean&nbsp;withOrdinality)</pre>
<div class="block">Creates an Uncollect.
<p>Each field of the input relational expression must be an array or multiset.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>traitSet</code> - Trait set</dd>
<dd><code>input</code> - Input relational expression</dd>
<dd><code>withOrdinality</code> - Whether output should contain an ORDINALITY column</dd>
</dl>
</li>
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<h4>explainTerms</h4>
<pre>public&nbsp;org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.RelWriter&nbsp;explainTerms(org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.RelWriter&nbsp;pw)</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code>explainTerms</code>&nbsp;in class&nbsp;<code>org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.SingleRel</code></dd>
</dl>
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<h4>copy</h4>
<pre>public final&nbsp;org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.RelNode&nbsp;copy(org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.plan.RelTraitSet&nbsp;traitSet,
java.util.List&lt;org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.RelNode&gt;&nbsp;inputs)</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code>copy</code>&nbsp;in interface&nbsp;<code>org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.RelNode</code></dd>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code>copy</code>&nbsp;in class&nbsp;<code>org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.AbstractRelNode</code></dd>
</dl>
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<pre>public&nbsp;org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.RelNode&nbsp;copy(org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.plan.RelTraitSet&nbsp;traitSet,
org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.RelNode&nbsp;input)</pre>
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<pre>protected&nbsp;org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.type.RelDataType&nbsp;deriveRowType()</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code>deriveRowType</code>&nbsp;in class&nbsp;<code>org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.SingleRel</code></dd>
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<pre>public static&nbsp;org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.type.RelDataType&nbsp;deriveUncollectRowType(org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.RelNode&nbsp;rel,
boolean&nbsp;withOrdinality)</pre>
<div class="block">Returns the row type returned by applying the 'UNNEST' operation to a relational expression.
<p>Each column in the relational expression must be a multiset of structs or an array. The
return type is the type of that column, plus an ORDINALITY column if <code>withOrdinality</code>.</div>
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