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<div class="sub-title"><span class="package-label-in-type">Package</span>&nbsp;<a href="package-summary.html">org.apache.calcite.sql.type</a></div>
<h1 title="Class SqlTypeFactoryImpl" class="title">Class SqlTypeFactoryImpl</h1>
</div>
<div class="inheritance" title="Inheritance Tree"><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">java.lang.Object</a>
<div class="inheritance"><a href="../../rel/type/RelDataTypeFactoryImpl.html" title="class in org.apache.calcite.rel.type">org.apache.calcite.rel.type.RelDataTypeFactoryImpl</a>
<div class="inheritance">org.apache.calcite.sql.type.SqlTypeFactoryImpl</div>
</div>
</div>
<section class="class-description" id="class-description">
<dl class="notes">
<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>
</dl>
<dl class="notes">
<dt>Direct Known Subclasses:</dt>
<dd><code><a href="../../jdbc/JavaTypeFactoryImpl.html" title="class in org.apache.calcite.jdbc">JavaTypeFactoryImpl</a></code></dd>
</dl>
<hr>
<div class="type-signature"><span class="modifiers">public class </span><span class="element-name type-name-label">SqlTypeFactoryImpl</span>
<span class="extends-implements">extends <a href="../../rel/type/RelDataTypeFactoryImpl.html" title="class in org.apache.calcite.rel.type">RelDataTypeFactoryImpl</a></span></div>
<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>
</section>
<section class="summary">
<ul class="summary-list">
<!-- ======== NESTED CLASS SUMMARY ======== -->
<li>
<section class="nested-class-summary" id="nested-class-summary">
<h2>Nested Class Summary</h2>
<div class="inherited-list">
<h2 id="nested-classes-inherited-from-class-org.apache.calcite.rel.type.RelDataTypeFactoryImpl">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></h2>
<code><a href="../../rel/type/RelDataTypeFactoryImpl.JavaType.html" title="class in org.apache.calcite.rel.type">RelDataTypeFactoryImpl.JavaType</a></code></div>
<div class="inherited-list">
<h2 id="nested-classes-inherited-from-class-org.apache.calcite.rel.type.RelDataTypeFactory">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></h2>
<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></div>
</section>
</li>
<!-- =========== FIELD SUMMARY =========== -->
<li>
<section class="field-summary" id="field-summary">
<h2>Field Summary</h2>
<div class="inherited-list">
<h3 id="fields-inherited-from-class-org.apache.calcite.rel.type.RelDataTypeFactoryImpl">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></div>
</section>
</li>
<!-- ======== CONSTRUCTOR SUMMARY ======== -->
<li>
<section class="constructor-summary" id="constructor-summary">
<h2>Constructor Summary</h2>
<div class="caption"><span>Constructors</span></div>
<div class="summary-table two-column-summary">
<div class="table-header col-first">Constructor</div>
<div class="table-header col-last">Description</div>
<div class="col-constructor-name even-row-color"><code><a href="#%3Cinit%3E(org.apache.calcite.rel.type.RelDataTypeSystem)" class="member-name-link">SqlTypeFactoryImpl</a><wbr>(<a href="../../rel/type/RelDataTypeSystem.html" title="interface in org.apache.calcite.rel.type">RelDataTypeSystem</a>&nbsp;typeSystem)</code></div>
<div class="col-last even-row-color">&nbsp;</div>
</div>
</section>
</li>
<!-- ========== METHOD SUMMARY =========== -->
<li>
<section class="method-summary" id="method-summary">
<h2>Method Summary</h2>
<div id="method-summary-table">
<div class="table-tabs" role="tablist" aria-orientation="horizontal"><button id="method-summary-table-tab0" role="tab" aria-selected="true" aria-controls="method-summary-table.tabpanel" tabindex="0" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table', 3)" class="active-table-tab">All Methods</button><button id="method-summary-table-tab2" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab2', 3)" class="table-tab">Instance Methods</button><button id="method-summary-table-tab4" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab4', 3)" class="table-tab">Concrete Methods</button></div>
<div id="method-summary-table.tabpanel" role="tabpanel">
<div class="summary-table three-column-summary" aria-labelledby="method-summary-table-tab0">
<div class="table-header col-first">Modifier and Type</div>
<div class="table-header col-second">Method</div>
<div class="table-header col-last">Description</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>protected <a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a></code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#canonize(org.apache.calcite.rel.type.RelDataType)" class="member-name-link">canonize</a><wbr>(<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;type)</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">Registers a type, or returns the existing type if it is already
registered.</div>
</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a></code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#createArrayType(org.apache.calcite.rel.type.RelDataType,long)" class="member-name-link">createArrayType</a><wbr>(<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;elementType,
long&nbsp;maxCardinality)</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">Creates an array type.</div>
</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a></code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#createMapType(org.apache.calcite.rel.type.RelDataType,org.apache.calcite.rel.type.RelDataType)" class="member-name-link">createMapType</a><wbr>(<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></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">Creates a map type.</div>
</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a></code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#createMeasureType(org.apache.calcite.rel.type.RelDataType)" class="member-name-link">createMeasureType</a><wbr>(<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;valueType)</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">Creates a measure type.</div>
</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a></code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#createMultisetType(org.apache.calcite.rel.type.RelDataType,long)" class="member-name-link">createMultisetType</a><wbr>(<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;type,
long&nbsp;maxCardinality)</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">Creates a multiset type.</div>
</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a></code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#createSqlIntervalType(org.apache.calcite.sql.SqlIntervalQualifier)" class="member-name-link">createSqlIntervalType</a><wbr>(<a href="../SqlIntervalQualifier.html" title="class in org.apache.calcite.sql">SqlIntervalQualifier</a>&nbsp;intervalQualifier)</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">Creates a SQL interval type.</div>
</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a></code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#createSqlType(org.apache.calcite.sql.type.SqlTypeName)" class="member-name-link">createSqlType</a><wbr>(<a href="SqlTypeName.html" title="enum in org.apache.calcite.sql.type">SqlTypeName</a>&nbsp;typeName)</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">Creates a SQL type with no precision or scale.</div>
</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a></code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#createSqlType(org.apache.calcite.sql.type.SqlTypeName,int)" class="member-name-link">createSqlType</a><wbr>(<a href="SqlTypeName.html" title="enum in org.apache.calcite.sql.type">SqlTypeName</a>&nbsp;typeName,
int&nbsp;precision)</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">Creates a SQL type with length (precision) but no scale.</div>
</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a></code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#createSqlType(org.apache.calcite.sql.type.SqlTypeName,int,int)" class="member-name-link">createSqlType</a><wbr>(<a href="SqlTypeName.html" title="enum in org.apache.calcite.sql.type">SqlTypeName</a>&nbsp;typeName,
int&nbsp;precision,
int&nbsp;scale)</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">Creates a SQL type with precision and scale.</div>
</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a></code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#createTypeWithCharsetAndCollation(org.apache.calcite.rel.type.RelDataType,java.nio.charset.Charset,org.apache.calcite.sql.SqlCollation)" class="member-name-link">createTypeWithCharsetAndCollation</a><wbr>(<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;type,
<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/nio/charset/Charset.html" title="class or interface in java.nio.charset" class="external-link">Charset</a>&nbsp;charset,
<a href="../SqlCollation.html" title="class in org.apache.calcite.sql">SqlCollation</a>&nbsp;collation)</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">Creates a type that is the same as another type but with possibly
different charset or collation.</div>
</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a></code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#createTypeWithNullability(org.apache.calcite.rel.type.RelDataType,boolean)" class="member-name-link">createTypeWithNullability</a><wbr>(<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;type,
boolean&nbsp;nullable)</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">Creates a type that is the same as another type but with possibly
different nullability.</div>
</div>
<div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a></code></div>
<div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#createUnknownType()" class="member-name-link">createUnknownType</a>()</code></div>
<div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">Creates a SQL type that represents the "unknown" type.</div>
</div>
<div class="col-first even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>@Nullable <a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a></code></div>
<div class="col-second even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#leastRestrictive(java.util.List)" class="member-name-link">leastRestrictive</a><wbr>(<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a>&lt;<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&gt;&nbsp;types)</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<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>
</div>
</div>
</div>
</div>
<div class="inherited-list">
<h3 id="methods-inherited-from-class-org.apache.calcite.rel.type.RelDataTypeFactoryImpl">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#decimalOf(org.apache.calcite.rel.type.RelDataType)">decimalOf</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#leastRestrictiveArrayMultisetType(java.util.List,org.apache.calcite.sql.type.SqlTypeName)">leastRestrictiveArrayMultisetType</a>, <a href="../../rel/type/RelDataTypeFactoryImpl.html#leastRestrictiveMapType(java.util.List,org.apache.calcite.sql.type.SqlTypeName)">leastRestrictiveMapType</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></div>
<div class="inherited-list">
<h3 id="methods-inherited-from-class-java.lang.Object">Methods inherited from class&nbsp;java.lang.<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a></h3>
<code><a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#clone()" title="class or interface in java.lang" class="external-link">clone</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#equals(java.lang.Object)" title="class or interface in java.lang" class="external-link">equals</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#finalize()" title="class or interface in java.lang" class="external-link">finalize</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#getClass()" title="class or interface in java.lang" class="external-link">getClass</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#hashCode()" title="class or interface in java.lang" class="external-link">hashCode</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#notify()" title="class or interface in java.lang" class="external-link">notify</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#notifyAll()" title="class or interface in java.lang" class="external-link">notifyAll</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#toString()" title="class or interface in java.lang" class="external-link">toString</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#wait()" title="class or interface in java.lang" class="external-link">wait</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#wait(long)" title="class or interface in java.lang" class="external-link">wait</a>, <a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/Object.html#wait(long,int)" title="class or interface in java.lang" class="external-link">wait</a></code></div>
</section>
</li>
</ul>
</section>
<section class="details">
<ul class="details-list">
<!-- ========= CONSTRUCTOR DETAIL ======== -->
<li>
<section class="constructor-details" id="constructor-detail">
<h2>Constructor Details</h2>
<ul class="member-list">
<li>
<section class="detail" id="&lt;init&gt;(org.apache.calcite.rel.type.RelDataTypeSystem)">
<h3>SqlTypeFactoryImpl</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="element-name">SqlTypeFactoryImpl</span><wbr><span class="parameters">(<a href="../../rel/type/RelDataTypeSystem.html" title="interface in org.apache.calcite.rel.type">RelDataTypeSystem</a>&nbsp;typeSystem)</span></div>
</section>
</li>
</ul>
</section>
</li>
<!-- ============ METHOD DETAIL ========== -->
<li>
<section class="method-details" id="method-detail">
<h2>Method Details</h2>
<ul class="member-list">
<li>
<section class="detail" id="createSqlType(org.apache.calcite.sql.type.SqlTypeName)">
<h3>createSqlType</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type"><a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a></span>&nbsp;<span class="element-name">createSqlType</span><wbr><span class="parameters">(<a href="SqlTypeName.html" title="enum in org.apache.calcite.sql.type">SqlTypeName</a>&nbsp;typeName)</span></div>
<div class="block"><span class="descfrm-type-label">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 class="notes">
<dt>Parameters:</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>Returns:</dt>
<dd>canonical type descriptor</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="createSqlType(org.apache.calcite.sql.type.SqlTypeName,int)">
<h3>createSqlType</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type"><a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a></span>&nbsp;<span class="element-name">createSqlType</span><wbr><span class="parameters">(<a href="SqlTypeName.html" title="enum in org.apache.calcite.sql.type">SqlTypeName</a>&nbsp;typeName,
int&nbsp;precision)</span></div>
<div class="block"><span class="descfrm-type-label">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 class="notes">
<dt>Parameters:</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>Returns:</dt>
<dd>canonical type descriptor</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="createSqlType(org.apache.calcite.sql.type.SqlTypeName,int,int)">
<h3>createSqlType</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type"><a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a></span>&nbsp;<span class="element-name">createSqlType</span><wbr><span class="parameters">(<a href="SqlTypeName.html" title="enum in org.apache.calcite.sql.type">SqlTypeName</a>&nbsp;typeName,
int&nbsp;precision,
int&nbsp;scale)</span></div>
<div class="block"><span class="descfrm-type-label">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 class="notes">
<dt>Parameters:</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>Returns:</dt>
<dd>canonical type descriptor</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="createUnknownType()">
<h3>createUnknownType</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type"><a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a></span>&nbsp;<span class="element-name">createUnknownType</span>()</div>
<div class="block"><span class="descfrm-type-label">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 class="notes">
<dt>Returns:</dt>
<dd>unknown type</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="createMultisetType(org.apache.calcite.rel.type.RelDataType,long)">
<h3>createMultisetType</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type"><a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a></span>&nbsp;<span class="element-name">createMultisetType</span><wbr><span class="parameters">(<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;type,
long&nbsp;maxCardinality)</span></div>
<div class="block"><span class="descfrm-type-label">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 class="notes">
<dt>Parameters:</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>Returns:</dt>
<dd>canonical multiset type descriptor</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="createArrayType(org.apache.calcite.rel.type.RelDataType,long)">
<h3>createArrayType</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type"><a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a></span>&nbsp;<span class="element-name">createArrayType</span><wbr><span class="parameters">(<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;elementType,
long&nbsp;maxCardinality)</span></div>
<div class="block"><span class="descfrm-type-label">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 class="notes">
<dt>Parameters:</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>Returns:</dt>
<dd>canonical array type descriptor</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="createMapType(org.apache.calcite.rel.type.RelDataType,org.apache.calcite.rel.type.RelDataType)">
<h3>createMapType</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type"><a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a></span>&nbsp;<span class="element-name">createMapType</span><wbr><span class="parameters">(<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)</span></div>
<div class="block"><span class="descfrm-type-label">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 class="notes">
<dt>Parameters:</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>Returns:</dt>
<dd>canonical map type descriptor</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="createMeasureType(org.apache.calcite.rel.type.RelDataType)">
<h3>createMeasureType</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type"><a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a></span>&nbsp;<span class="element-name">createMeasureType</span><wbr><span class="parameters">(<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;valueType)</span></div>
<div class="block"><span class="descfrm-type-label">Description copied from interface:&nbsp;<code><a href="../../rel/type/RelDataTypeFactory.html#createMeasureType(org.apache.calcite.rel.type.RelDataType)">RelDataTypeFactory</a></code></span></div>
<div class="block">Creates a measure type.</div>
<dl class="notes">
<dt>Parameters:</dt>
<dd><code>valueType</code> - type of the values of the measure</dd>
<dt>Returns:</dt>
<dd>canonical measure type descriptor</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="createSqlIntervalType(org.apache.calcite.sql.SqlIntervalQualifier)">
<h3>createSqlIntervalType</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type"><a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a></span>&nbsp;<span class="element-name">createSqlIntervalType</span><wbr><span class="parameters">(<a href="../SqlIntervalQualifier.html" title="class in org.apache.calcite.sql">SqlIntervalQualifier</a>&nbsp;intervalQualifier)</span></div>
<div class="block"><span class="descfrm-type-label">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 class="notes">
<dt>Parameters:</dt>
<dd><code>intervalQualifier</code> - contains information if it is a year-month or a
day-time interval along with precision information</dd>
<dt>Returns:</dt>
<dd>canonical type descriptor</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="createTypeWithCharsetAndCollation(org.apache.calcite.rel.type.RelDataType,java.nio.charset.Charset,org.apache.calcite.sql.SqlCollation)">
<h3>createTypeWithCharsetAndCollation</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type"><a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a></span>&nbsp;<span class="element-name">createTypeWithCharsetAndCollation</span><wbr><span class="parameters">(<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;type,
<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/nio/charset/Charset.html" title="class or interface in java.nio.charset" class="external-link">Charset</a>&nbsp;charset,
<a href="../SqlCollation.html" title="class in org.apache.calcite.sql">SqlCollation</a>&nbsp;collation)</span></div>
<div class="block"><span class="descfrm-type-label">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 class="notes">
<dt>Parameters:</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>Returns:</dt>
<dd>output type, same as input type except with specified charset and
collation</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="leastRestrictive(java.util.List)">
<h3>leastRestrictive</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type">@Nullable <a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a></span>&nbsp;<span class="element-name">leastRestrictive</span><wbr><span class="parameters">(<a href="https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/util/List.html" title="class or interface in java.util" class="external-link">List</a>&lt;<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&gt;&nbsp;types)</span></div>
<div class="block"><span class="descfrm-type-label">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 class="notes">
<dt>Specified by:</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>Overrides:</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>Parameters:</dt>
<dd><code>types</code> - input types to be combined using union (not null, not empty)</dd>
<dt>Returns:</dt>
<dd>canonical union type descriptor</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="createTypeWithNullability(org.apache.calcite.rel.type.RelDataType,boolean)">
<h3>createTypeWithNullability</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="return-type"><a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a></span>&nbsp;<span class="element-name">createTypeWithNullability</span><wbr><span class="parameters">(<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;type,
boolean&nbsp;nullable)</span></div>
<div class="block"><span class="descfrm-type-label">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 class="notes">
<dt>Specified by:</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>Overrides:</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>Parameters:</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>Returns:</dt>
<dd>output type, same as input type except with specified nullability</dd>
</dl>
</section>
</li>
<li>
<section class="detail" id="canonize(org.apache.calcite.rel.type.RelDataType)">
<h3>canonize</h3>
<div class="member-signature"><span class="modifiers">protected</span>&nbsp;<span class="return-type"><a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a></span>&nbsp;<span class="element-name">canonize</span><wbr><span class="parameters">(<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>&nbsp;type)</span></div>
<div class="block"><span class="descfrm-type-label">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 class="notes">
<dt>Overrides:</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>
</dl>
</section>
</li>
</ul>
</section>
</li>
</ul>
</section>
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