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<div class="subTitle"><span class="packageLabelInType">Package</span>&nbsp;<a href="package-summary.html">org.apache.calcite.sql.type</a></div>
<h2 title="Class SqlTypeFactoryImpl" class="title">Class SqlTypeFactoryImpl</h2>
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<ul class="inheritance">
<li>java.lang.Object</li>
<li>
<ul class="inheritance">
<li><a href="../../rel/type/RelDataTypeFactoryImpl.html" title="class in org.apache.calcite.rel.type">org.apache.calcite.rel.type.RelDataTypeFactoryImpl</a></li>
<li>
<ul class="inheritance">
<li>org.apache.calcite.sql.type.SqlTypeFactoryImpl</li>
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<dt>All Implemented Interfaces:</dt>
<dd><code><a href="../../rel/type/RelDataTypeFactory.html" title="interface in org.apache.calcite.rel.type">RelDataTypeFactory</a></code></dd>
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<dl>
<dt>Direct Known Subclasses:</dt>
<dd><code><a href="../../jdbc/JavaTypeFactoryImpl.html" title="class in org.apache.calcite.jdbc">JavaTypeFactoryImpl</a></code></dd>
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<pre>public class <span class="typeNameLabel">SqlTypeFactoryImpl</span>
extends <a href="../../rel/type/RelDataTypeFactoryImpl.html" title="class in org.apache.calcite.rel.type">RelDataTypeFactoryImpl</a></pre>
<div class="block">SqlTypeFactoryImpl provides a default implementation of
<a href="../../rel/type/RelDataTypeFactory.html" title="interface in org.apache.calcite.rel.type"><code>RelDataTypeFactory</code></a> which supports SQL types.</div>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colSecond" scope="col">Class</th>
<th class="colLast" scope="col">Description</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code>private static class&nbsp;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="SqlTypeFactoryImpl.UnknownSqlType.html" title="class in org.apache.calcite.sql.type">SqlTypeFactoryImpl.UnknownSqlType</a></span></code></th>
<td class="colLast">
<div class="block">The unknown type.</div>
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<h3>Nested classes/interfaces inherited from class&nbsp;org.apache.calcite.rel.type.<a href="../../rel/type/RelDataTypeFactoryImpl.html" title="class in org.apache.calcite.rel.type">RelDataTypeFactoryImpl</a></h3>
<code><a href="../../rel/type/RelDataTypeFactoryImpl.JavaType.html" title="class in org.apache.calcite.rel.type">RelDataTypeFactoryImpl.JavaType</a></code></li>
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<h3>Nested classes/interfaces inherited from interface&nbsp;org.apache.calcite.rel.type.<a href="../../rel/type/RelDataTypeFactory.html" title="interface in org.apache.calcite.rel.type">RelDataTypeFactory</a></h3>
<code><a href="../../rel/type/RelDataTypeFactory.Builder.html" title="class in org.apache.calcite.rel.type">RelDataTypeFactory.Builder</a>, <a href="../../rel/type/RelDataTypeFactory.FieldInfo.html" title="interface in org.apache.calcite.rel.type">RelDataTypeFactory.FieldInfo</a>, <a href="../../rel/type/RelDataTypeFactory.FieldInfoBuilder.html" title="class in org.apache.calcite.rel.type">RelDataTypeFactory.FieldInfoBuilder</a></code></li>
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<h3>Fields inherited from class&nbsp;org.apache.calcite.rel.type.<a href="../../rel/type/RelDataTypeFactoryImpl.html" title="class in org.apache.calcite.rel.type">RelDataTypeFactoryImpl</a></h3>
<code><a href="../../rel/type/RelDataTypeFactoryImpl.html#typeSystem">typeSystem</a></code></li>
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<th class="colFirst" scope="col">Constructor</th>
<th class="colLast" scope="col">Description</th>
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<tr class="altColor">
<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(org.apache.calcite.rel.type.RelDataTypeSystem)">SqlTypeFactoryImpl</a></span>&#8203;(<a href="../../rel/type/RelDataTypeSystem.html" title="interface in org.apache.calcite.rel.type">RelDataTypeSystem</a>&nbsp;typeSystem)</code></th>
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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>
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<tr id="i0" class="altColor">
<td class="colFirst"><code>private void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#assertBasic(org.apache.calcite.sql.type.SqlTypeName)">assertBasic</a></span>&#8203;(<a href="SqlTypeName.html" title="enum in org.apache.calcite.sql.type">SqlTypeName</a>&nbsp;typeName)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>protected <a href="../../rel/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="#canonize(org.apache.calcite.rel.type.RelDataType)">canonize</a></span>&#8203;(<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;type)</code></th>
<td class="colLast">
<div class="block">Registers a type, or returns the existing type if it is already
registered.</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>private <a href="../../rel/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="#copyArrayType(org.apache.calcite.rel.type.RelDataType,boolean)">copyArrayType</a></span>&#8203;(<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;type,
boolean&nbsp;nullable)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>private <a href="../../rel/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="#copyIntervalType(org.apache.calcite.rel.type.RelDataType,boolean)">copyIntervalType</a></span>&#8203;(<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;type,
boolean&nbsp;nullable)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>private <a href="../../rel/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="#copyMapType(org.apache.calcite.rel.type.RelDataType,boolean)">copyMapType</a></span>&#8203;(<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;type,
boolean&nbsp;nullable)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>private <a href="../../rel/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="#copyMultisetType(org.apache.calcite.rel.type.RelDataType,boolean)">copyMultisetType</a></span>&#8203;(<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;type,
boolean&nbsp;nullable)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>private <a href="../../rel/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="#copyObjectType(org.apache.calcite.rel.type.RelDataType,boolean)">copyObjectType</a></span>&#8203;(<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;type,
boolean&nbsp;nullable)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code><a href="../../rel/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="#createArrayType(org.apache.calcite.rel.type.RelDataType,long)">createArrayType</a></span>&#8203;(<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;elementType,
long&nbsp;maxCardinality)</code></th>
<td class="colLast">
<div class="block">Creates an array type.</div>
</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>private <a href="../../rel/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="#createDoublePrecisionType()">createDoublePrecisionType</a></span>()</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code><a href="../../rel/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="#createMapType(org.apache.calcite.rel.type.RelDataType,org.apache.calcite.rel.type.RelDataType)">createMapType</a></span>&#8203;(<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;keyType,
<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;valueType)</code></th>
<td class="colLast">
<div class="block">Creates a map type.</div>
</td>
</tr>
<tr id="i10" class="altColor">
<td class="colFirst"><code><a href="../../rel/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="#createMultisetType(org.apache.calcite.rel.type.RelDataType,long)">createMultisetType</a></span>&#8203;(<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;type,
long&nbsp;maxCardinality)</code></th>
<td class="colLast">
<div class="block">Creates a multiset type.</div>
</td>
</tr>
<tr id="i11" class="rowColor">
<td class="colFirst"><code><a href="../../rel/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="#createSqlIntervalType(org.apache.calcite.sql.SqlIntervalQualifier)">createSqlIntervalType</a></span>&#8203;(<a href="../SqlIntervalQualifier.html" title="class in org.apache.calcite.sql">SqlIntervalQualifier</a>&nbsp;intervalQualifier)</code></th>
<td class="colLast">
<div class="block">Creates a SQL interval type.</div>
</td>
</tr>
<tr id="i12" class="altColor">
<td class="colFirst"><code><a href="../../rel/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="#createSqlType(org.apache.calcite.sql.type.SqlTypeName)">createSqlType</a></span>&#8203;(<a href="SqlTypeName.html" title="enum in org.apache.calcite.sql.type">SqlTypeName</a>&nbsp;typeName)</code></th>
<td class="colLast">
<div class="block">Creates a SQL type with no precision or scale.</div>
</td>
</tr>
<tr id="i13" class="rowColor">
<td class="colFirst"><code><a href="../../rel/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="#createSqlType(org.apache.calcite.sql.type.SqlTypeName,int)">createSqlType</a></span>&#8203;(<a href="SqlTypeName.html" title="enum in org.apache.calcite.sql.type">SqlTypeName</a>&nbsp;typeName,
int&nbsp;precision)</code></th>
<td class="colLast">
<div class="block">Creates a SQL type with length (precision) but no scale.</div>
</td>
</tr>
<tr id="i14" class="altColor">
<td class="colFirst"><code><a href="../../rel/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="#createSqlType(org.apache.calcite.sql.type.SqlTypeName,int,int)">createSqlType</a></span>&#8203;(<a href="SqlTypeName.html" title="enum in org.apache.calcite.sql.type">SqlTypeName</a>&nbsp;typeName,
int&nbsp;precision,
int&nbsp;scale)</code></th>
<td class="colLast">
<div class="block">Creates a SQL type with precision and scale.</div>
</td>
</tr>
<tr id="i15" class="rowColor">
<td class="colFirst"><code><a href="../../rel/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="#createTypeWithCharsetAndCollation(org.apache.calcite.rel.type.RelDataType,java.nio.charset.Charset,org.apache.calcite.sql.SqlCollation)">createTypeWithCharsetAndCollation</a></span>&#8203;(<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;type,
java.nio.charset.Charset&nbsp;charset,
<a href="../SqlCollation.html" title="class in org.apache.calcite.sql">SqlCollation</a>&nbsp;collation)</code></th>
<td class="colLast">
<div class="block">Creates a type that is the same as another type but with possibly
different charset or collation.</div>
</td>
</tr>
<tr id="i16" class="altColor">
<td class="colFirst"><code><a href="../../rel/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="#createTypeWithNullability(org.apache.calcite.rel.type.RelDataType,boolean)">createTypeWithNullability</a></span>&#8203;(<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;type,
boolean&nbsp;nullable)</code></th>
<td class="colLast">
<div class="block">Creates a type that is the same as another type but with possibly
different nullability.</div>
</td>
</tr>
<tr id="i17" class="rowColor">
<td class="colFirst"><code><a href="../../rel/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="#createUnknownType()">createUnknownType</a></span>()</code></th>
<td class="colLast">
<div class="block">Creates a SQL type that represents the "unknown" type.</div>
</td>
</tr>
<tr id="i18" class="altColor">
<td class="colFirst"><code><a href="../../rel/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="#leastRestrictive(java.util.List)">leastRestrictive</a></span>&#8203;(java.util.List&lt;<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&gt;&nbsp;types)</code></th>
<td class="colLast">
<div class="block">Returns the most general of a set of types (that is, one type to which
they can all be cast), or null if conversion is not possible.</div>
</td>
</tr>
<tr id="i19" class="rowColor">
<td class="colFirst"><code>private <a href="../../rel/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="#leastRestrictiveByCast(java.util.List)">leastRestrictiveByCast</a></span>&#8203;(java.util.List&lt;<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&gt;&nbsp;types)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i20" class="altColor">
<td class="colFirst"><code>private <a href="../../rel/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="#leastRestrictiveSqlType(java.util.List)">leastRestrictiveSqlType</a></span>&#8203;(java.util.List&lt;<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&gt;&nbsp;types)</code></th>
<td class="colLast">&nbsp;</td>
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<h3>Methods inherited from class&nbsp;org.apache.calcite.rel.type.<a href="../../rel/type/RelDataTypeFactoryImpl.html" title="class in org.apache.calcite.rel.type">RelDataTypeFactoryImpl</a></h3>
<code><a href="../../rel/type/RelDataTypeFactoryImpl.html#builder()">builder</a>, <a href="../../rel/type/RelDataTypeFactoryImpl.html#canonize(org.apache.calcite.rel.type.StructKind,java.util.List,java.util.List)">canonize</a>, <a href="../../rel/type/RelDataTypeFactoryImpl.html#canonize(org.apache.calcite.rel.type.StructKind,java.util.List,java.util.List,boolean)">canonize</a>, <a href="../../rel/type/RelDataTypeFactoryImpl.html#copyType(org.apache.calcite.rel.type.RelDataType)">copyType</a>, <a href="../../rel/type/RelDataTypeFactoryImpl.html#createDecimalProduct(org.apache.calcite.rel.type.RelDataType,org.apache.calcite.rel.type.RelDataType)">createDecimalProduct</a>, <a href="../../rel/type/RelDataTypeFactoryImpl.html#createDecimalQuotient(org.apache.calcite.rel.type.RelDataType,org.apache.calcite.rel.type.RelDataType)">createDecimalQuotient</a>, <a href="../../rel/type/RelDataTypeFactoryImpl.html#createJavaType(java.lang.Class)">createJavaType</a>, <a href="../../rel/type/RelDataTypeFactoryImpl.html#createJoinType(org.apache.calcite.rel.type.RelDataType...)">createJoinType</a>, <a href="../../rel/type/RelDataTypeFactoryImpl.html#createStructType(java.util.List)">createStructType</a>, <a href="../../rel/type/RelDataTypeFactoryImpl.html#createStructType(java.util.List,java.util.List)">createStructType</a>, <a href="../../rel/type/RelDataTypeFactoryImpl.html#createStructType(org.apache.calcite.rel.type.RelDataTypeFactory.FieldInfo)">createStructType</a>, <a href="../../rel/type/RelDataTypeFactoryImpl.html#createStructType(org.apache.calcite.rel.type.StructKind,java.util.List,java.util.List)">createStructType</a>, <a href="../../rel/type/RelDataTypeFactoryImpl.html#getDefaultCharset()">getDefaultCharset</a>, <a href="../../rel/type/RelDataTypeFactoryImpl.html#getTypeSystem()">getTypeSystem</a>, <a href="../../rel/type/RelDataTypeFactoryImpl.html#isJavaType(org.apache.calcite.rel.type.RelDataType)">isJavaType</a>, <a href="../../rel/type/RelDataTypeFactoryImpl.html#leastRestrictiveStructuredType(java.util.List)">leastRestrictiveStructuredType</a>, <a href="../../rel/type/RelDataTypeFactoryImpl.html#useDoubleMultiplication(org.apache.calcite.rel.type.RelDataType,org.apache.calcite.rel.type.RelDataType)">useDoubleMultiplication</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>
</ul>
</li>
</ul>
</section>
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<a id="&lt;init&gt;(org.apache.calcite.rel.type.RelDataTypeSystem)">
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<h4>SqlTypeFactoryImpl</h4>
<pre>public&nbsp;SqlTypeFactoryImpl&#8203;(<a href="../../rel/type/RelDataTypeSystem.html" title="interface in org.apache.calcite.rel.type">RelDataTypeSystem</a>&nbsp;typeSystem)</pre>
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<h4>createSqlType</h4>
<pre class="methodSignature">public&nbsp;<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;createSqlType&#8203;(<a href="SqlTypeName.html" title="enum in org.apache.calcite.sql.type">SqlTypeName</a>&nbsp;typeName)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../rel/type/RelDataTypeFactory.html#createSqlType(org.apache.calcite.sql.type.SqlTypeName)">RelDataTypeFactory</a></code></span></div>
<div class="block">Creates a SQL type with no precision or scale.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>typeName</code> - Name of the type, for example <a href="SqlTypeName.html#BOOLEAN"><code>SqlTypeName.BOOLEAN</code></a>,
never null</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>canonical type descriptor</dd>
</dl>
</li>
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<h4>createSqlType</h4>
<pre class="methodSignature">public&nbsp;<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;createSqlType&#8203;(<a href="SqlTypeName.html" title="enum in org.apache.calcite.sql.type">SqlTypeName</a>&nbsp;typeName,
int&nbsp;precision)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../rel/type/RelDataTypeFactory.html#createSqlType(org.apache.calcite.sql.type.SqlTypeName,int)">RelDataTypeFactory</a></code></span></div>
<div class="block">Creates a SQL type with length (precision) but no scale.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>typeName</code> - Name of the type, for example <a href="SqlTypeName.html#VARCHAR"><code>SqlTypeName.VARCHAR</code></a>.
Never null.</dd>
<dd><code>precision</code> - Maximum length of the value (non-numeric types) or the
precision of the value (numeric/datetime types).
Must be non-negative or
<a href="../../rel/type/RelDataType.html#PRECISION_NOT_SPECIFIED"><code>RelDataType.PRECISION_NOT_SPECIFIED</code></a>.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>canonical type descriptor</dd>
</dl>
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<h4>createSqlType</h4>
<pre class="methodSignature">public&nbsp;<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;createSqlType&#8203;(<a href="SqlTypeName.html" title="enum in org.apache.calcite.sql.type">SqlTypeName</a>&nbsp;typeName,
int&nbsp;precision,
int&nbsp;scale)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../rel/type/RelDataTypeFactory.html#createSqlType(org.apache.calcite.sql.type.SqlTypeName,int,int)">RelDataTypeFactory</a></code></span></div>
<div class="block">Creates a SQL type with precision and scale.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>typeName</code> - Name of the type, for example <a href="SqlTypeName.html#DECIMAL"><code>SqlTypeName.DECIMAL</code></a>.
Never null.</dd>
<dd><code>precision</code> - Precision of the value.
Must be non-negative or
<a href="../../rel/type/RelDataType.html#PRECISION_NOT_SPECIFIED"><code>RelDataType.PRECISION_NOT_SPECIFIED</code></a>.</dd>
<dd><code>scale</code> - scale of the values, i.e. the number of decimal places to
shift the value. For example, a NUMBER(10,3) value of
"123.45" is represented "123450" (that is, multiplied by
10^3). A negative scale <em>is</em> valid.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>canonical type descriptor</dd>
</dl>
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<h4>createUnknownType</h4>
<pre class="methodSignature">public&nbsp;<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;createUnknownType()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../rel/type/RelDataTypeFactory.html#createUnknownType()">RelDataTypeFactory</a></code></span></div>
<div class="block">Creates a SQL type that represents the "unknown" type.
It is only equal to itself, and is distinct from the NULL type.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>unknown type</dd>
</dl>
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</ul>
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<pre class="methodSignature">public&nbsp;<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;createMultisetType&#8203;(<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;type,
long&nbsp;maxCardinality)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../rel/type/RelDataTypeFactory.html#createMultisetType(org.apache.calcite.rel.type.RelDataType,long)">RelDataTypeFactory</a></code></span></div>
<div class="block">Creates a multiset type. Multisets are unordered collections of elements.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>type</code> - type of the elements of the multiset</dd>
<dd><code>maxCardinality</code> - maximum collection size, or -1 for unlimited</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>canonical multiset type descriptor</dd>
</dl>
</li>
</ul>
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<pre class="methodSignature">public&nbsp;<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;createArrayType&#8203;(<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;elementType,
long&nbsp;maxCardinality)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../rel/type/RelDataTypeFactory.html#createArrayType(org.apache.calcite.rel.type.RelDataType,long)">RelDataTypeFactory</a></code></span></div>
<div class="block">Creates an array type. Arrays are ordered collections of elements.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>elementType</code> - type of the elements of the array</dd>
<dd><code>maxCardinality</code> - maximum array size, or -1 for unlimited</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>canonical array type descriptor</dd>
</dl>
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</ul>
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<pre class="methodSignature">public&nbsp;<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;createMapType&#8203;(<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;keyType,
<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;valueType)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../rel/type/RelDataTypeFactory.html#createMapType(org.apache.calcite.rel.type.RelDataType,org.apache.calcite.rel.type.RelDataType)">RelDataTypeFactory</a></code></span></div>
<div class="block">Creates a map type. Maps are unordered collections of key/value pairs.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>keyType</code> - type of the keys of the map</dd>
<dd><code>valueType</code> - type of the values of the map</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>canonical map type descriptor</dd>
</dl>
</li>
</ul>
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<h4>createSqlIntervalType</h4>
<pre class="methodSignature">public&nbsp;<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;createSqlIntervalType&#8203;(<a href="../SqlIntervalQualifier.html" title="class in org.apache.calcite.sql">SqlIntervalQualifier</a>&nbsp;intervalQualifier)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../rel/type/RelDataTypeFactory.html#createSqlIntervalType(org.apache.calcite.sql.SqlIntervalQualifier)">RelDataTypeFactory</a></code></span></div>
<div class="block">Creates a SQL interval type.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>intervalQualifier</code> - contains information if it is a year-month or a
day-time interval along with precision information</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>canonical type descriptor</dd>
</dl>
</li>
</ul>
<a id="createTypeWithCharsetAndCollation(org.apache.calcite.rel.type.RelDataType,java.nio.charset.Charset,org.apache.calcite.sql.SqlCollation)">
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<h4>createTypeWithCharsetAndCollation</h4>
<pre class="methodSignature">public&nbsp;<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;createTypeWithCharsetAndCollation&#8203;(<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;type,
java.nio.charset.Charset&nbsp;charset,
<a href="../SqlCollation.html" title="class in org.apache.calcite.sql">SqlCollation</a>&nbsp;collation)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../rel/type/RelDataTypeFactory.html#createTypeWithCharsetAndCollation(org.apache.calcite.rel.type.RelDataType,java.nio.charset.Charset,org.apache.calcite.sql.SqlCollation)">RelDataTypeFactory</a></code></span></div>
<div class="block">Creates a type that is the same as another type but with possibly
different charset or collation. For types without a concept of charset or
collation this function must throw an error.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>type</code> - input type</dd>
<dd><code>charset</code> - charset to assign</dd>
<dd><code>collation</code> - collation to assign</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>output type, same as input type except with specified charset and
collation</dd>
</dl>
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<h4>leastRestrictive</h4>
<pre class="methodSignature">public&nbsp;<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;leastRestrictive&#8203;(java.util.List&lt;<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&gt;&nbsp;types)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../rel/type/RelDataTypeFactory.html#leastRestrictive(java.util.List)">RelDataTypeFactory</a></code></span></div>
<div class="block">Returns the most general of a set of types (that is, one type to which
they can all be cast), or null if conversion is not possible. The result
may be a new type that is less restrictive than any of the input types,
e.g. <code>leastRestrictive(INT, NUMERIC(3, 2))</code> could be
<code>NUMERIC(12, 2)</code>.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../rel/type/RelDataTypeFactory.html#leastRestrictive(java.util.List)">leastRestrictive</a></code>&nbsp;in interface&nbsp;<code><a href="../../rel/type/RelDataTypeFactory.html" title="interface in org.apache.calcite.rel.type">RelDataTypeFactory</a></code></dd>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="../../rel/type/RelDataTypeFactoryImpl.html#leastRestrictive(java.util.List)">leastRestrictive</a></code>&nbsp;in class&nbsp;<code><a href="../../rel/type/RelDataTypeFactoryImpl.html" title="class in org.apache.calcite.rel.type">RelDataTypeFactoryImpl</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>types</code> - input types to be combined using union (not null, not empty)</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>canonical union type descriptor</dd>
</dl>
</li>
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<h4>leastRestrictiveByCast</h4>
<pre class="methodSignature">private&nbsp;<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;leastRestrictiveByCast&#8203;(java.util.List&lt;<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&gt;&nbsp;types)</pre>
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<h4>createTypeWithNullability</h4>
<pre class="methodSignature">public&nbsp;<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;createTypeWithNullability&#8203;(<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;type,
boolean&nbsp;nullable)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../rel/type/RelDataTypeFactory.html#createTypeWithNullability(org.apache.calcite.rel.type.RelDataType,boolean)">RelDataTypeFactory</a></code></span></div>
<div class="block">Creates a type that is the same as another type but with possibly
different nullability. The output type may be identical to the input
type. For type systems without a concept of nullability, the return value
is always the same as the input.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../rel/type/RelDataTypeFactory.html#createTypeWithNullability(org.apache.calcite.rel.type.RelDataType,boolean)">createTypeWithNullability</a></code>&nbsp;in interface&nbsp;<code><a href="../../rel/type/RelDataTypeFactory.html" title="interface in org.apache.calcite.rel.type">RelDataTypeFactory</a></code></dd>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="../../rel/type/RelDataTypeFactoryImpl.html#createTypeWithNullability(org.apache.calcite.rel.type.RelDataType,boolean)">createTypeWithNullability</a></code>&nbsp;in class&nbsp;<code><a href="../../rel/type/RelDataTypeFactoryImpl.html" title="class in org.apache.calcite.rel.type">RelDataTypeFactoryImpl</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>type</code> - input type</dd>
<dd><code>nullable</code> - true to request a nullable type; false to request a NOT
NULL type</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>output type, same as input type except with specified nullability</dd>
</dl>
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<pre class="methodSignature">private&nbsp;void&nbsp;assertBasic&#8203;(<a href="SqlTypeName.html" title="enum in org.apache.calcite.sql.type">SqlTypeName</a>&nbsp;typeName)</pre>
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<h4>leastRestrictiveSqlType</h4>
<pre class="methodSignature">private&nbsp;<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;leastRestrictiveSqlType&#8203;(java.util.List&lt;<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&gt;&nbsp;types)</pre>
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<pre class="methodSignature">private&nbsp;<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;createDoublePrecisionType()</pre>
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<pre class="methodSignature">private&nbsp;<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;copyMultisetType&#8203;(<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;type,
boolean&nbsp;nullable)</pre>
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<h4>copyIntervalType</h4>
<pre class="methodSignature">private&nbsp;<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;copyIntervalType&#8203;(<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;type,
boolean&nbsp;nullable)</pre>
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<h4>copyObjectType</h4>
<pre class="methodSignature">private&nbsp;<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;copyObjectType&#8203;(<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;type,
boolean&nbsp;nullable)</pre>
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<h4>copyArrayType</h4>
<pre class="methodSignature">private&nbsp;<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;copyArrayType&#8203;(<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;type,
boolean&nbsp;nullable)</pre>
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<h4>copyMapType</h4>
<pre class="methodSignature">private&nbsp;<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;copyMapType&#8203;(<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;type,
boolean&nbsp;nullable)</pre>
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<h4>canonize</h4>
<pre class="methodSignature">protected&nbsp;<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;canonize&#8203;(<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;type)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="../../rel/type/RelDataTypeFactoryImpl.html#canonize(org.apache.calcite.rel.type.RelDataType)">RelDataTypeFactoryImpl</a></code></span></div>
<div class="block">Registers a type, or returns the existing type if it is already
registered.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="../../rel/type/RelDataTypeFactoryImpl.html#canonize(org.apache.calcite.rel.type.RelDataType)">canonize</a></code>&nbsp;in class&nbsp;<code><a href="../../rel/type/RelDataTypeFactoryImpl.html" title="class in org.apache.calcite.rel.type">RelDataTypeFactoryImpl</a></code></dd>
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