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 <div class="subTitle">org.apache.calcite.rel.type</div>
 <h2 title="类 DelegatingTypeSystem" class="title">类 DelegatingTypeSystem</h2>
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 <ul class="inheritance">
 <li><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="java.lang中的类或接口">java.lang.Object</a></li>
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 <li>org.apache.calcite.rel.type.DelegatingTypeSystem</li>
 </ul>
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 </ul>
 <div class="description">
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 <dl>
 <dt>所有已实现的接口:</dt>
 <dd><a href="../../../../../org/apache/calcite/rel/type/RelDataTypeSystem.html" title="org.apache.calcite.rel.type中的接口">RelDataTypeSystem</a></dd>
 </dl>
 <hr>
 <br>
 <pre>public class <span class="typeNameLabel">DelegatingTypeSystem</span>
 extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="java.lang中的类或接口">Object</a>
 implements <a href="../../../../../org/apache/calcite/rel/type/RelDataTypeSystem.html" title="org.apache.calcite.rel.type中的接口">RelDataTypeSystem</a></pre>
 <div class="block">Implementation of <a href="../../../../../org/apache/calcite/rel/type/RelDataTypeSystem.html" title="org.apache.calcite.rel.type中的接口"><code>RelDataTypeSystem</code></a>
  that sends all methods to an underlying object.</div>
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 <h3>从接口继承的字段&nbsp;org.apache.calcite.rel.type.<a href="../../../../../org/apache/calcite/rel/type/RelDataTypeSystem.html" title="org.apache.calcite.rel.type中的接口">RelDataTypeSystem</a></h3>
 <code><a href="../../../../../org/apache/calcite/rel/type/RelDataTypeSystem.html#DEFAULT">DEFAULT</a></code></li>
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 <h3>构造器概要</h3>
 <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="构造器概要表, 列表构造器和解释">
 <caption><span>构造器</span><span class="tabEnd">&nbsp;</span></caption>
 <tr>
 <th class="colFirst" scope="col">限定符</th>
 <th class="colLast" scope="col">构造器和说明</th>
 </tr>
 <tr class="altColor">
 <td class="colFirst"><code>protected </code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/type/DelegatingTypeSystem.html#DelegatingTypeSystem-org.apache.calcite.rel.type.RelDataTypeSystem-">DelegatingTypeSystem</a></span>(<a href="../../../../../org/apache/calcite/rel/type/RelDataTypeSystem.html" title="org.apache.calcite.rel.type中的接口">RelDataTypeSystem</a>&nbsp;typeSystem)</code>
 <div class="block">Creates a <code>DelegatingTypeSystem</code>.</div>
 </td>
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 <h3>方法概要</h3>
 <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="方法概要表, 列表方法和解释">
 <caption><span id="t0" class="activeTableTab"><span>所有方法</span><span class="tabEnd">&nbsp;</span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">实例方法</a></span><span class="tabEnd">&nbsp;</span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">具体方法</a></span><span class="tabEnd">&nbsp;</span></span></caption>
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 <th class="colFirst" scope="col">限定符和类型</th>
 <th class="colLast" scope="col">方法和说明</th>
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 <td class="colFirst"><code><a href="../../../../../org/apache/calcite/rel/type/RelDataType.html" title="org.apache.calcite.rel.type中的接口">RelDataType</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/type/DelegatingTypeSystem.html#deriveAvgAggType-org.apache.calcite.rel.type.RelDataTypeFactory-org.apache.calcite.rel.type.RelDataType-">deriveAvgAggType</a></span>(<a href="../../../../../org/apache/calcite/rel/type/RelDataTypeFactory.html" title="org.apache.calcite.rel.type中的接口">RelDataTypeFactory</a>&nbsp;typeFactory,
                 <a href="../../../../../org/apache/calcite/rel/type/RelDataType.html" title="org.apache.calcite.rel.type中的接口">RelDataType</a>&nbsp;argumentType)</code>
 <div class="block">Returns the return type of a call to the <code>AVG</code>, <code>STDDEV</code> or
  <code>VAR</code> aggregate functions, inferred from its argument type.</div>
 </td>
 </tr>
 <tr id="i1" class="rowColor">
 <td class="colFirst"><code><a href="../../../../../org/apache/calcite/rel/type/RelDataType.html" title="org.apache.calcite.rel.type中的接口">RelDataType</a></code></td>
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                <a href="../../../../../org/apache/calcite/rel/type/RelDataType.html" title="org.apache.calcite.rel.type中的接口">RelDataType</a>&nbsp;arg0Type,
                <a href="../../../../../org/apache/calcite/rel/type/RelDataType.html" title="org.apache.calcite.rel.type中的接口">RelDataType</a>&nbsp;arg1Type)</code>
 <div class="block">Returns the return type of a call to the <code>COVAR</code> aggregate function,
  inferred from its argument types.</div>
 </td>
 </tr>
 <tr id="i2" class="altColor">
 <td class="colFirst"><code><a href="../../../../../org/apache/calcite/rel/type/RelDataType.html" title="org.apache.calcite.rel.type中的接口">RelDataType</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/type/DelegatingTypeSystem.html#deriveFractionalRankType-org.apache.calcite.rel.type.RelDataTypeFactory-">deriveFractionalRankType</a></span>(<a href="../../../../../org/apache/calcite/rel/type/RelDataTypeFactory.html" title="org.apache.calcite.rel.type中的接口">RelDataTypeFactory</a>&nbsp;typeFactory)</code>
 <div class="block">Returns the return type of the <code>CUME_DIST</code> and <code>PERCENT_RANK</code>
  aggregate functions.</div>
 </td>
 </tr>
 <tr id="i3" class="rowColor">
 <td class="colFirst"><code><a href="../../../../../org/apache/calcite/rel/type/RelDataType.html" title="org.apache.calcite.rel.type中的接口">RelDataType</a></code></td>
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 <div class="block">Returns the return type of the <code>NTILE</code>, <code>RANK</code>,
  <code>DENSE_RANK</code>, and <code>ROW_NUMBER</code> aggregate functions.</div>
 </td>
 </tr>
 <tr id="i4" class="altColor">
 <td class="colFirst"><code><a href="../../../../../org/apache/calcite/rel/type/RelDataType.html" title="org.apache.calcite.rel.type中的接口">RelDataType</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/type/DelegatingTypeSystem.html#deriveSumType-org.apache.calcite.rel.type.RelDataTypeFactory-org.apache.calcite.rel.type.RelDataType-">deriveSumType</a></span>(<a href="../../../../../org/apache/calcite/rel/type/RelDataTypeFactory.html" title="org.apache.calcite.rel.type中的接口">RelDataTypeFactory</a>&nbsp;typeFactory,
              <a href="../../../../../org/apache/calcite/rel/type/RelDataType.html" title="org.apache.calcite.rel.type中的接口">RelDataType</a>&nbsp;argumentType)</code>
 <div class="block">Returns the return type of a call to the <code>SUM</code> aggregate function,
  inferred from its argument type.</div>
 </td>
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 <td class="colFirst"><code>int</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/type/DelegatingTypeSystem.html#getDefaultPrecision-org.apache.calcite.sql.type.SqlTypeName-">getDefaultPrecision</a></span>(<a href="../../../../../org/apache/calcite/sql/type/SqlTypeName.html" title="org.apache.calcite.sql.type中的枚举">SqlTypeName</a>&nbsp;typeName)</code>
 <div class="block">Returns default precision for this type if supported, otherwise -1 if
  precision is either unsupported or must be specified explicitly.</div>
 </td>
 </tr>
 <tr id="i6" class="altColor">
 <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="java.lang中的类或接口">String</a></code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/type/DelegatingTypeSystem.html#getLiteral-org.apache.calcite.sql.type.SqlTypeName-boolean-">getLiteral</a></span>(<a href="../../../../../org/apache/calcite/sql/type/SqlTypeName.html" title="org.apache.calcite.sql.type中的枚举">SqlTypeName</a>&nbsp;typeName,
           boolean&nbsp;isPrefix)</code>
 <div class="block">Returns the LITERAL string for the type, either PREFIX/SUFFIX.</div>
 </td>
 </tr>
 <tr id="i7" class="rowColor">
 <td class="colFirst"><code>int</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/type/DelegatingTypeSystem.html#getMaxNumericPrecision--">getMaxNumericPrecision</a></span>()</code>
 <div class="block">Returns the maximum precision of a NUMERIC or DECIMAL type.</div>
 </td>
 </tr>
 <tr id="i8" class="altColor">
 <td class="colFirst"><code>int</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/type/DelegatingTypeSystem.html#getMaxNumericScale--">getMaxNumericScale</a></span>()</code>
 <div class="block">Returns the maximum scale of a NUMERIC or DECIMAL type.</div>
 </td>
 </tr>
 <tr id="i9" class="rowColor">
 <td class="colFirst"><code>int</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/type/DelegatingTypeSystem.html#getMaxPrecision-org.apache.calcite.sql.type.SqlTypeName-">getMaxPrecision</a></span>(<a href="../../../../../org/apache/calcite/sql/type/SqlTypeName.html" title="org.apache.calcite.sql.type中的枚举">SqlTypeName</a>&nbsp;typeName)</code>
 <div class="block">Returns the maximum precision (or length) allowed for this type, or -1 if
  precision/length are not applicable for this type.</div>
 </td>
 </tr>
 <tr id="i10" class="altColor">
 <td class="colFirst"><code>int</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/type/DelegatingTypeSystem.html#getMaxScale-org.apache.calcite.sql.type.SqlTypeName-">getMaxScale</a></span>(<a href="../../../../../org/apache/calcite/sql/type/SqlTypeName.html" title="org.apache.calcite.sql.type中的枚举">SqlTypeName</a>&nbsp;typeName)</code>
 <div class="block">Returns the maximum scale of a given type.</div>
 </td>
 </tr>
 <tr id="i11" class="rowColor">
 <td class="colFirst"><code>int</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/type/DelegatingTypeSystem.html#getNumTypeRadix-org.apache.calcite.sql.type.SqlTypeName-">getNumTypeRadix</a></span>(<a href="../../../../../org/apache/calcite/sql/type/SqlTypeName.html" title="org.apache.calcite.sql.type中的枚举">SqlTypeName</a>&nbsp;typeName)</code>
 <div class="block">Returns the numeric type radix, typically 2 or 10.
  0 means "not applicable".</div>
 </td>
 </tr>
 <tr id="i12" class="altColor">
 <td class="colFirst"><code>boolean</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/type/DelegatingTypeSystem.html#isAutoincrement-org.apache.calcite.sql.type.SqlTypeName-">isAutoincrement</a></span>(<a href="../../../../../org/apache/calcite/sql/type/SqlTypeName.html" title="org.apache.calcite.sql.type中的枚举">SqlTypeName</a>&nbsp;typeName)</code>
 <div class="block">Returns whether the type can be auto increment.</div>
 </td>
 </tr>
 <tr id="i13" class="rowColor">
 <td class="colFirst"><code>boolean</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/type/DelegatingTypeSystem.html#isCaseSensitive-org.apache.calcite.sql.type.SqlTypeName-">isCaseSensitive</a></span>(<a href="../../../../../org/apache/calcite/sql/type/SqlTypeName.html" title="org.apache.calcite.sql.type中的枚举">SqlTypeName</a>&nbsp;typeName)</code>
 <div class="block">Returns whether the type is case sensitive.</div>
 </td>
 </tr>
 <tr id="i14" class="altColor">
 <td class="colFirst"><code>boolean</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/type/DelegatingTypeSystem.html#isSchemaCaseSensitive--">isSchemaCaseSensitive</a></span>()</code>
 <div class="block">Whether two record types are considered distinct if their field names
  are the same but in different cases.</div>
 </td>
 </tr>
 <tr id="i15" class="rowColor">
 <td class="colFirst"><code>boolean</code></td>
 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/type/DelegatingTypeSystem.html#shouldConvertRaggedUnionTypesToVarying--">shouldConvertRaggedUnionTypesToVarying</a></span>()</code>
 <div class="block">Whether the least restrictive type of a number of CHAR types of different
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 <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone--" title="java.lang中的类或接口">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="java.lang中的类或接口">equals</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize--" title="java.lang中的类或接口">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--" title="java.lang中的类或接口">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="java.lang中的类或接口">hashCode</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify--" title="java.lang中的类或接口">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="java.lang中的类或接口">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#toString--" title="java.lang中的类或接口">toString</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait--" title="java.lang中的类或接口">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="java.lang中的类或接口">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="java.lang中的类或接口">wait</a></code></li>
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 <code><a href="../../../../../org/apache/calcite/rel/type/RelDataTypeSystem.html#deriveDecimalDivideType-org.apache.calcite.rel.type.RelDataTypeFactory-org.apache.calcite.rel.type.RelDataType-org.apache.calcite.rel.type.RelDataType-">deriveDecimalDivideType</a>, <a href="../../../../../org/apache/calcite/rel/type/RelDataTypeSystem.html#deriveDecimalModType-org.apache.calcite.rel.type.RelDataTypeFactory-org.apache.calcite.rel.type.RelDataType-org.apache.calcite.rel.type.RelDataType-">deriveDecimalModType</a>, <a href="../../../../../org/apache/calcite/rel/type/RelDataTypeSystem.html#deriveDecimalMultiplyType-org.apache.calcite.rel.type.RelDataTypeFactory-org.apache.calcite.rel.type.RelDataType-org.apache.calcite.rel.type.RelDataType-">deriveDecimalMultiplyType</a>, <a href="../../../../../org/apache/calcite/rel/type/RelDataTypeSystem.html#deriveDecimalPlusType-org.apache.calcite.rel.type.RelDataTypeFactory-org.apache.calcite.rel.type.RelDataType-org.apache.calcite.rel.type.RelDataType-">deriveDecimalPlusType</a>, <a href="../../../../../org/apache/calcite/rel/type/RelDataTypeSystem.html#shouldUseDoubleMultiplication-org.apache.calcite.rel.type.RelDataTypeFactory-org.apache.calcite.rel.type.RelDataType-org.apache.calcite.rel.type.RelDataType-">shouldUseDoubleMultiplication</a></code></li>
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 <pre>protected&nbsp;DelegatingTypeSystem(<a href="../../../../../org/apache/calcite/rel/type/RelDataTypeSystem.html" title="org.apache.calcite.rel.type中的接口">RelDataTypeSystem</a>&nbsp;typeSystem)</pre>
 <div class="block">Creates a <code>DelegatingTypeSystem</code>.</div>
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 <pre>public&nbsp;int&nbsp;getMaxScale(<a href="../../../../../org/apache/calcite/sql/type/SqlTypeName.html" title="org.apache.calcite.sql.type中的枚举">SqlTypeName</a>&nbsp;typeName)</pre>
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 <div class="block">Returns the return type of the <code>CUME_DIST</code> and <code>PERCENT_RANK</code>
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 <div class="block">Returns the return type of the <code>NTILE</code>, <code>RANK</code>,
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