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<div class="subTitle"><span class="packageLabelInType">Package</span>&nbsp;<a href="package-summary.html">org.apache.calcite.sql.validate</a></div>
<h2 title="Class SelectScope" class="title">Class SelectScope</h2>
</div>
<div class="contentContainer">
<ul class="inheritance">
<li>java.lang.Object</li>
<li>
<ul class="inheritance">
<li><a href="DelegatingScope.html" title="class in org.apache.calcite.sql.validate">org.apache.calcite.sql.validate.DelegatingScope</a></li>
<li>
<ul class="inheritance">
<li><a href="ListScope.html" title="class in org.apache.calcite.sql.validate">org.apache.calcite.sql.validate.ListScope</a></li>
<li>
<ul class="inheritance">
<li>org.apache.calcite.sql.validate.SelectScope</li>
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</li>
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<dt>All Implemented Interfaces:</dt>
<dd><code><a href="SqlValidatorScope.html" title="interface in org.apache.calcite.sql.validate">SqlValidatorScope</a></code></dd>
</dl>
<hr>
<pre>public class <span class="typeNameLabel">SelectScope</span>
extends <a href="ListScope.html" title="class in org.apache.calcite.sql.validate">ListScope</a></pre>
<div class="block">The name-resolution scope of a SELECT clause. The objects visible are those
in the FROM clause, and objects inherited from the parent scope.
<p>This object is both a <a href="SqlValidatorScope.html" title="interface in org.apache.calcite.sql.validate"><code>SqlValidatorScope</code></a> and a
<a href="SqlValidatorNamespace.html" title="interface in org.apache.calcite.sql.validate"><code>SqlValidatorNamespace</code></a>. In the query</p>
<blockquote>
<pre>SELECT name FROM (
SELECT *
FROM emp
WHERE gender = 'F')</pre></blockquote>
<p>we need to use the <a href="SelectScope.html" title="class in org.apache.calcite.sql.validate"><code>SelectScope</code></a> as a
<a href="SqlValidatorNamespace.html" title="interface in org.apache.calcite.sql.validate"><code>SqlValidatorNamespace</code></a> when resolving 'name', and
as a <a href="SqlValidatorScope.html" title="interface in org.apache.calcite.sql.validate"><code>SqlValidatorScope</code></a> when resolving 'gender'.</p>
<h3>Scopes</h3>
<p>In the query</p>
<blockquote>
<pre>
SELECT expr1
FROM t1,
t2,
(SELECT expr2 FROM t3) AS q3
WHERE c1 IN (SELECT expr3 FROM t4)
ORDER BY expr4</pre>
</blockquote>
<p>The scopes available at various points of the query are as follows:</p>
<ul>
<li>expr1 can see t1, t2, q3</li>
<li>expr2 can see t3</li>
<li>expr3 can see t4, t1, t2</li>
<li>expr4 can see t1, t2, q3, plus (depending upon the dialect) any aliases
defined in the SELECT clause</li>
</ul>
<h3>Namespaces</h3>
<p>In the above query, there are 4 namespaces:</p>
<ul>
<li>t1</li>
<li>t2</li>
<li>(SELECT expr2 FROM t3) AS q3</li>
<li>(SELECT expr3 FROM t4)</li>
</ul></div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="SelectNamespace.html" title="class in org.apache.calcite.sql.validate"><code>SelectNamespace</code></a></dd>
</dl>
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<h3>Nested classes/interfaces inherited from interface&nbsp;org.apache.calcite.sql.validate.<a href="SqlValidatorScope.html" title="interface in org.apache.calcite.sql.validate">SqlValidatorScope</a></h3>
<code><a href="SqlValidatorScope.EmptyPath.html" title="class in org.apache.calcite.sql.validate">SqlValidatorScope.EmptyPath</a>, <a href="SqlValidatorScope.Path.html" title="class in org.apache.calcite.sql.validate">SqlValidatorScope.Path</a>, <a href="SqlValidatorScope.Resolve.html" title="class in org.apache.calcite.sql.validate">SqlValidatorScope.Resolve</a>, <a href="SqlValidatorScope.Resolved.html" title="interface in org.apache.calcite.sql.validate">SqlValidatorScope.Resolved</a>, <a href="SqlValidatorScope.ResolvedImpl.html" title="class in org.apache.calcite.sql.validate">SqlValidatorScope.ResolvedImpl</a>, <a href="SqlValidatorScope.Step.html" title="class in org.apache.calcite.sql.validate">SqlValidatorScope.Step</a></code></li>
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<caption><span>Fields</span><span class="tabEnd">&nbsp;</span></caption>
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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.List&lt;<a href="../SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a>&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#expandedSelectList">expandedSelectList</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>private <a href="../SqlNodeList.html" title="class in org.apache.calcite.sql">SqlNodeList</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#orderList">orderList</a></span></code></th>
<td class="colLast">
<div class="block">List of column names which sort this scope.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private <a href="../SqlSelect.html" title="class in org.apache.calcite.sql">SqlSelect</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#select">select</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>protected java.util.List&lt;java.lang.String&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#windowNames">windowNames</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private <a href="SqlValidatorScope.html" title="interface in org.apache.calcite.sql.validate">SqlValidatorScope</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#windowParent">windowParent</a></span></code></th>
<td class="colLast">
<div class="block">Scope to use to resolve windows</div>
</td>
</tr>
</table>
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<h3>Fields inherited from class&nbsp;org.apache.calcite.sql.validate.<a href="ListScope.html" title="class in org.apache.calcite.sql.validate">ListScope</a></h3>
<code><a href="ListScope.html#children">children</a></code></li>
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<h3>Fields inherited from class&nbsp;org.apache.calcite.sql.validate.<a href="DelegatingScope.html" title="class in org.apache.calcite.sql.validate">DelegatingScope</a></h3>
<code><a href="DelegatingScope.html#parent">parent</a>, <a href="DelegatingScope.html#validator">validator</a></code></li>
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<caption><span>Constructors</span><span class="tabEnd">&nbsp;</span></caption>
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<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(org.apache.calcite.sql.validate.SqlValidatorScope,org.apache.calcite.sql.validate.SqlValidatorScope,org.apache.calcite.sql.SqlSelect)">SelectScope</a></span>&#8203;(<a href="SqlValidatorScope.html" title="interface in org.apache.calcite.sql.validate">SqlValidatorScope</a>&nbsp;parent,
<a href="SqlValidatorScope.html" title="interface in org.apache.calcite.sql.validate">SqlValidatorScope</a>&nbsp;winParent,
<a href="../SqlSelect.html" title="class in org.apache.calcite.sql">SqlSelect</a>&nbsp;select)</code></th>
<td class="colLast">
<div class="block">Creates a scope corresponding to a SELECT clause.</div>
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<tr id="i0" class="altColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#addWindowName(java.lang.String)">addWindowName</a></span>&#8203;(java.lang.String&nbsp;winName)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#existingWindowName(java.lang.String)">existingWindowName</a></span>&#8203;(java.lang.String&nbsp;winName)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>java.util.List&lt;<a href="../SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a>&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getExpandedSelectList()">getExpandedSelectList</a></span>()</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code><a href="SqlMonotonicity.html" title="enum in org.apache.calcite.sql.validate">SqlMonotonicity</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getMonotonicity(org.apache.calcite.sql.SqlNode)">getMonotonicity</a></span>&#8203;(<a href="../SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a>&nbsp;expr)</code></th>
<td class="colLast">
<div class="block">Returns whether an expression is monotonic in this scope.</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code><a href="../SqlSelect.html" title="class in org.apache.calcite.sql">SqlSelect</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getNode()">getNode</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns the root node of this scope.</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code><a href="../SqlNodeList.html" title="class in org.apache.calcite.sql">SqlNodeList</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getOrderList()">getOrderList</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns the expressions by which the rows in this scope are sorted.</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code><a href="SqlValidatorTable.html" title="interface in org.apache.calcite.sql.validate">SqlValidatorTable</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getTable()">getTable</a></span>()</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code><a href="../SqlWindow.html" title="class in org.apache.calcite.sql">SqlWindow</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#lookupWindow(java.lang.String)">lookupWindow</a></span>&#8203;(java.lang.String&nbsp;name)</code></th>
<td class="colLast">
<div class="block">Finds a window with a given name.</div>
</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#setExpandedSelectList(java.util.List)">setExpandedSelectList</a></span>&#8203;(java.util.List&lt;<a href="../SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a>&gt;&nbsp;selectList)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
</table>
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<h3>Methods inherited from class&nbsp;org.apache.calcite.sql.validate.<a href="ListScope.html" title="class in org.apache.calcite.sql.validate">ListScope</a></h3>
<code><a href="ListScope.html#addChild(org.apache.calcite.sql.validate.SqlValidatorNamespace,java.lang.String,boolean)">addChild</a>, <a href="ListScope.html#findAliases(java.util.Collection)">findAliases</a>, <a href="ListScope.html#findAllColumnNames(java.util.List)">findAllColumnNames</a>, <a href="ListScope.html#findQualifyingTableName(java.lang.String,org.apache.calcite.sql.SqlNode)">findQualifyingTableName</a>, <a href="ListScope.html#findQualifyingTableNames(java.lang.String,org.apache.calcite.sql.SqlNode,org.apache.calcite.sql.validate.SqlNameMatcher)">findQualifyingTableNames</a>, <a href="ListScope.html#getChildNames()">getChildNames</a>, <a href="ListScope.html#getChildren()">getChildren</a>, <a href="ListScope.html#resolve(java.util.List,org.apache.calcite.sql.validate.SqlNameMatcher,boolean,org.apache.calcite.sql.validate.SqlValidatorScope.Resolved)">resolve</a>, <a href="ListScope.html#resolveColumn(java.lang.String,org.apache.calcite.sql.SqlNode)">resolveColumn</a></code></li>
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<h3>Methods inherited from class&nbsp;org.apache.calcite.sql.validate.<a href="DelegatingScope.html" title="class in org.apache.calcite.sql.validate">DelegatingScope</a></h3>
<code><a href="DelegatingScope.html#addColumnNames(org.apache.calcite.sql.validate.SqlValidatorNamespace,java.util.List)">addColumnNames</a>, <a href="DelegatingScope.html#fullyQualify(org.apache.calcite.sql.SqlIdentifier)">fullyQualify</a>, <a href="DelegatingScope.html#getOperandScope(org.apache.calcite.sql.SqlCall)">getOperandScope</a>, <a href="DelegatingScope.html#getParent()">getParent</a>, <a href="DelegatingScope.html#getTableNamespace(java.util.List)">getTableNamespace</a>, <a href="DelegatingScope.html#getValidator()">getValidator</a>, <a href="DelegatingScope.html#nullifyType(org.apache.calcite.sql.SqlNode,org.apache.calcite.rel.type.RelDataType)">nullifyType</a>, <a href="DelegatingScope.html#resolveInNamespace(org.apache.calcite.sql.validate.SqlValidatorNamespace,boolean,java.util.List,org.apache.calcite.sql.validate.SqlNameMatcher,org.apache.calcite.sql.validate.SqlValidatorScope.Path,org.apache.calcite.sql.validate.SqlValidatorScope.Resolved)">resolveInNamespace</a>, <a href="DelegatingScope.html#resolveTable(java.util.List,org.apache.calcite.sql.validate.SqlNameMatcher,org.apache.calcite.sql.validate.SqlValidatorScope.Path,org.apache.calcite.sql.validate.SqlValidatorScope.Resolved)">resolveTable</a>, <a href="DelegatingScope.html#validateExpr(org.apache.calcite.sql.SqlNode)">validateExpr</a></code></li>
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<h3>Methods inherited from class&nbsp;java.lang.Object</h3>
<code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li>
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<h3>Methods inherited from interface&nbsp;org.apache.calcite.sql.validate.<a href="SqlValidatorScope.html" title="interface in org.apache.calcite.sql.validate">SqlValidatorScope</a></h3>
<code><a href="SqlValidatorScope.html#isWithin(org.apache.calcite.sql.validate.SqlValidatorScope)">isWithin</a></code></li>
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<!-- ============ FIELD DETAIL =========== -->
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<h3>Field Detail</h3>
<a id="select">
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<h4>select</h4>
<pre>private final&nbsp;<a href="../SqlSelect.html" title="class in org.apache.calcite.sql">SqlSelect</a> select</pre>
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<a id="windowNames">
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<h4>windowNames</h4>
<pre>protected final&nbsp;java.util.List&lt;java.lang.String&gt; windowNames</pre>
</li>
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<a id="expandedSelectList">
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</a>
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<h4>expandedSelectList</h4>
<pre>private&nbsp;java.util.List&lt;<a href="../SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a>&gt; expandedSelectList</pre>
</li>
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<a id="orderList">
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<h4>orderList</h4>
<pre>private&nbsp;<a href="../SqlNodeList.html" title="class in org.apache.calcite.sql">SqlNodeList</a> orderList</pre>
<div class="block">List of column names which sort this scope. Empty if this scope is not
sorted. Null if has not been computed yet.</div>
</li>
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<a id="windowParent">
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<h4>windowParent</h4>
<pre>private final&nbsp;<a href="SqlValidatorScope.html" title="interface in org.apache.calcite.sql.validate">SqlValidatorScope</a> windowParent</pre>
<div class="block">Scope to use to resolve windows</div>
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<h3>Constructor Detail</h3>
<a id="&lt;init&gt;(org.apache.calcite.sql.validate.SqlValidatorScope,org.apache.calcite.sql.validate.SqlValidatorScope,org.apache.calcite.sql.SqlSelect)">
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<h4>SelectScope</h4>
<pre>SelectScope&#8203;(<a href="SqlValidatorScope.html" title="interface in org.apache.calcite.sql.validate">SqlValidatorScope</a>&nbsp;parent,
<a href="SqlValidatorScope.html" title="interface in org.apache.calcite.sql.validate">SqlValidatorScope</a>&nbsp;winParent,
<a href="../SqlSelect.html" title="class in org.apache.calcite.sql">SqlSelect</a>&nbsp;select)</pre>
<div class="block">Creates a scope corresponding to a SELECT clause.</div>
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<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>parent</code> - Parent scope, must not be null</dd>
<dd><code>winParent</code> - Scope for window parent, may be null</dd>
<dd><code>select</code> - Select clause</dd>
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<h3>Method Detail</h3>
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<h4>getTable</h4>
<pre class="methodSignature">public&nbsp;<a href="SqlValidatorTable.html" title="interface in org.apache.calcite.sql.validate">SqlValidatorTable</a>&nbsp;getTable()</pre>
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<h4>getNode</h4>
<pre class="methodSignature">public&nbsp;<a href="../SqlSelect.html" title="class in org.apache.calcite.sql">SqlSelect</a>&nbsp;getNode()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="SqlValidatorScope.html#getNode()">SqlValidatorScope</a></code></span></div>
<div class="block">Returns the root node of this scope. Never null.</div>
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<h4>lookupWindow</h4>
<pre class="methodSignature">public&nbsp;<a href="../SqlWindow.html" title="class in org.apache.calcite.sql">SqlWindow</a>&nbsp;lookupWindow&#8203;(java.lang.String&nbsp;name)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="SqlValidatorScope.html#lookupWindow(java.lang.String)">SqlValidatorScope</a></code></span></div>
<div class="block">Finds a window with a given name. Returns null if not found.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="SqlValidatorScope.html#lookupWindow(java.lang.String)">lookupWindow</a></code>&nbsp;in interface&nbsp;<code><a href="SqlValidatorScope.html" title="interface in org.apache.calcite.sql.validate">SqlValidatorScope</a></code></dd>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="DelegatingScope.html#lookupWindow(java.lang.String)">lookupWindow</a></code>&nbsp;in class&nbsp;<code><a href="DelegatingScope.html" title="class in org.apache.calcite.sql.validate">DelegatingScope</a></code></dd>
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<h4>getMonotonicity</h4>
<pre class="methodSignature">public&nbsp;<a href="SqlMonotonicity.html" title="enum in org.apache.calcite.sql.validate">SqlMonotonicity</a>&nbsp;getMonotonicity&#8203;(<a href="../SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a>&nbsp;expr)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="SqlValidatorScope.html#getMonotonicity(org.apache.calcite.sql.SqlNode)">SqlValidatorScope</a></code></span></div>
<div class="block">Returns whether an expression is monotonic in this scope. For example, if
the scope has previously been sorted by columns X, Y, then X is monotonic
in this scope, but Y is not.</div>
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<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="SqlValidatorScope.html#getMonotonicity(org.apache.calcite.sql.SqlNode)">getMonotonicity</a></code>&nbsp;in interface&nbsp;<code><a href="SqlValidatorScope.html" title="interface in org.apache.calcite.sql.validate">SqlValidatorScope</a></code></dd>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="DelegatingScope.html#getMonotonicity(org.apache.calcite.sql.SqlNode)">getMonotonicity</a></code>&nbsp;in class&nbsp;<code><a href="DelegatingScope.html" title="class in org.apache.calcite.sql.validate">DelegatingScope</a></code></dd>
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<h4>getOrderList</h4>
<pre class="methodSignature">public&nbsp;<a href="../SqlNodeList.html" title="class in org.apache.calcite.sql">SqlNodeList</a>&nbsp;getOrderList()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="SqlValidatorScope.html#getOrderList()">SqlValidatorScope</a></code></span></div>
<div class="block">Returns the expressions by which the rows in this scope are sorted. If
the rows are unsorted, returns null.</div>
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<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="SqlValidatorScope.html#getOrderList()">getOrderList</a></code>&nbsp;in interface&nbsp;<code><a href="SqlValidatorScope.html" title="interface in org.apache.calcite.sql.validate">SqlValidatorScope</a></code></dd>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="DelegatingScope.html#getOrderList()">getOrderList</a></code>&nbsp;in class&nbsp;<code><a href="DelegatingScope.html" title="class in org.apache.calcite.sql.validate">DelegatingScope</a></code></dd>
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<h4>addWindowName</h4>
<pre class="methodSignature">public&nbsp;void&nbsp;addWindowName&#8203;(java.lang.String&nbsp;winName)</pre>
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<h4>existingWindowName</h4>
<pre class="methodSignature">public&nbsp;boolean&nbsp;existingWindowName&#8203;(java.lang.String&nbsp;winName)</pre>
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<h4>getExpandedSelectList</h4>
<pre class="methodSignature">public&nbsp;java.util.List&lt;<a href="../SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a>&gt;&nbsp;getExpandedSelectList()</pre>
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<h4>setExpandedSelectList</h4>
<pre class="methodSignature">public&nbsp;void&nbsp;setExpandedSelectList&#8203;(java.util.List&lt;<a href="../SqlNode.html" title="class in org.apache.calcite.sql">SqlNode</a>&gt;&nbsp;selectList)</pre>
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