javadocAggregate/org/apache/calcite/sql/type/InferTypes.html - calcite-site - Git at Google

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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 InferTypes" class="title">Class InferTypes</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">org.apache.calcite.sql.type.InferTypes</div>
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 <section class="class-description" id="class-description">
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 <div class="type-signature"><span class="modifiers">public abstract class </span><span class="element-name type-name-label">InferTypes</span>
 <span class="extends-implements">extends <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></span></div>
 <div class="block">Strategies for inferring operand types.</div>
 <dl class="notes">
 <dt>See Also:</dt>
 <dd>
 <ul class="see-list">
 <li><a href="SqlOperandTypeInference.html" title="interface in org.apache.calcite.sql.type"><code>SqlOperandTypeInference</code></a></li>
 <li><a href="ReturnTypes.html" title="class in org.apache.calcite.sql.type"><code>ReturnTypes</code></a></li>
 </ul>
 </dd>
 </dl>
 </section>
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 <!-- =========== FIELD SUMMARY =========== -->
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 <div class="caption"><span>Fields</span></div>
 <div class="summary-table three-column-summary">
 <div class="table-header col-first">Modifier and Type</div>
 <div class="table-header col-second">Field</div>
 <div class="table-header col-last">Description</div>
 <div class="col-first even-row-color"><code>static final <a href="SqlOperandTypeInference.html" title="interface in org.apache.calcite.sql.type">SqlOperandTypeInference</a></code></div>
 <div class="col-second even-row-color"><code><a href="#ANY_NULLABLE" class="member-name-link">ANY_NULLABLE</a></code></div>
 <div class="col-last even-row-color">
 <div class="block">Operand type-inference strategy where an unknown operand type is assumed
  to be nullable ANY.</div>
 </div>
 <div class="col-first odd-row-color"><code>static final <a href="SqlOperandTypeInference.html" title="interface in org.apache.calcite.sql.type">SqlOperandTypeInference</a></code></div>
 <div class="col-second odd-row-color"><code><a href="#BOOLEAN" class="member-name-link">BOOLEAN</a></code></div>
 <div class="col-last odd-row-color">
 <div class="block">Operand type-inference strategy where an unknown operand type is assumed
  to be boolean.</div>
 </div>
 <div class="col-first even-row-color"><code>static final <a href="SqlOperandTypeInference.html" title="interface in org.apache.calcite.sql.type">SqlOperandTypeInference</a></code></div>
 <div class="col-second even-row-color"><code><a href="#FIRST_KNOWN" class="member-name-link">FIRST_KNOWN</a></code></div>
 <div class="col-last even-row-color">
 <div class="block">Operand type-inference strategy where an unknown operand type is derived
  from the first operand with a known type.</div>
 </div>
 <div class="col-first odd-row-color"><code>static final <a href="SqlOperandTypeInference.html" title="interface in org.apache.calcite.sql.type">SqlOperandTypeInference</a></code></div>
 <div class="col-second odd-row-color"><code><a href="#RETURN_TYPE" class="member-name-link">RETURN_TYPE</a></code></div>
 <div class="col-last odd-row-color">
 <div class="block">Operand type-inference strategy where an unknown operand type is derived
  from the call's return type.</div>
 </div>
 <div class="col-first even-row-color"><code>static final <a href="SqlOperandTypeInference.html" title="interface in org.apache.calcite.sql.type">SqlOperandTypeInference</a></code></div>
 <div class="col-second even-row-color"><code><a href="#VARCHAR_1024" class="member-name-link">VARCHAR_1024</a></code></div>
 <div class="col-last even-row-color">
 <div class="block">Operand type-inference strategy where an unknown operand type is assumed
  to be VARCHAR(1024).</div>
 </div>
 </div>
 </section>
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 <!-- ========== METHOD SUMMARY =========== -->
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 <h2>Method Summary</h2>
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 <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-tab1 method-summary-table-tab4"><code>static <a href="SqlOperandTypeInference.html" title="interface in org.apache.calcite.sql.type">SqlOperandTypeInference</a></code></div>
 <div class="col-second even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#explicit(java.util.List)" class="member-name-link">explicit</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-tab1 method-summary-table-tab4">
 <div class="block">Returns an <a href="SqlOperandTypeInference.html" title="interface in org.apache.calcite.sql.type"><code>SqlOperandTypeInference</code></a> that returns a given list of
  types.</div>
 </div>
 </div>
 </div>
 </div>
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 <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>
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 </section>
 </li>
 </ul>
 </section>
 <section class="details">
 <ul class="details-list">
 <!-- ============ FIELD DETAIL =========== -->
 <li>
 <section class="field-details" id="field-detail">
 <h2>Field Details</h2>
 <ul class="member-list">
 <li>
 <section class="detail" id="FIRST_KNOWN">
 <h3>FIRST_KNOWN</h3>
 <div class="member-signature"><span class="modifiers">public static final</span>&nbsp;<span class="return-type"><a href="SqlOperandTypeInference.html" title="interface in org.apache.calcite.sql.type">SqlOperandTypeInference</a></span>&nbsp;<span class="element-name">FIRST_KNOWN</span></div>
 <div class="block">Operand type-inference strategy where an unknown operand type is derived
  from the first operand with a known type.</div>
 </section>
 </li>
 <li>
 <section class="detail" id="RETURN_TYPE">
 <h3>RETURN_TYPE</h3>
 <div class="member-signature"><span class="modifiers">public static final</span>&nbsp;<span class="return-type"><a href="SqlOperandTypeInference.html" title="interface in org.apache.calcite.sql.type">SqlOperandTypeInference</a></span>&nbsp;<span class="element-name">RETURN_TYPE</span></div>
 <div class="block">Operand type-inference strategy where an unknown operand type is derived
  from the call's return type. If the return type is a record, it must have
  the same number of fields as the number of operands.</div>
 </section>
 </li>
 <li>
 <section class="detail" id="BOOLEAN">
 <h3>BOOLEAN</h3>
 <div class="member-signature"><span class="modifiers">public static final</span>&nbsp;<span class="return-type"><a href="SqlOperandTypeInference.html" title="interface in org.apache.calcite.sql.type">SqlOperandTypeInference</a></span>&nbsp;<span class="element-name">BOOLEAN</span></div>
 <div class="block">Operand type-inference strategy where an unknown operand type is assumed
  to be boolean.</div>
 </section>
 </li>
 <li>
 <section class="detail" id="VARCHAR_1024">
 <h3>VARCHAR_1024</h3>
 <div class="member-signature"><span class="modifiers">public static final</span>&nbsp;<span class="return-type"><a href="SqlOperandTypeInference.html" title="interface in org.apache.calcite.sql.type">SqlOperandTypeInference</a></span>&nbsp;<span class="element-name">VARCHAR_1024</span></div>
 <div class="block">Operand type-inference strategy where an unknown operand type is assumed
  to be VARCHAR(1024).  This is not something which should be used in most
  cases (especially since the precision is arbitrary), but for IS [NOT]
  NULL, we don't really care about the type at all, so it's reasonable to
  use something that every other type can be cast to.</div>
 </section>
 </li>
 <li>
 <section class="detail" id="ANY_NULLABLE">
 <h3>ANY_NULLABLE</h3>
 <div class="member-signature"><span class="modifiers">public static final</span>&nbsp;<span class="return-type"><a href="SqlOperandTypeInference.html" title="interface in org.apache.calcite.sql.type">SqlOperandTypeInference</a></span>&nbsp;<span class="element-name">ANY_NULLABLE</span></div>
 <div class="block">Operand type-inference strategy where an unknown operand type is assumed
  to be nullable ANY.</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="explicit(java.util.List)">
 <h3>explicit</h3>
 <div class="member-signature"><span class="modifiers">public static</span>&nbsp;<span class="return-type"><a href="SqlOperandTypeInference.html" title="interface in org.apache.calcite.sql.type">SqlOperandTypeInference</a></span>&nbsp;<span class="element-name">explicit</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">Returns an <a href="SqlOperandTypeInference.html" title="interface in org.apache.calcite.sql.type"><code>SqlOperandTypeInference</code></a> that returns a given list of
  types.</div>
 </section>
 </li>
 </ul>
 </section>
 </li>
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	<div class="sub-title"><span class="package-label-in-type">Package</span> <a href="package-summary.html">org.apache.calcite.sql.type</a></div>
	<h1 title="Class InferTypes" class="title">Class InferTypes</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">org.apache.calcite.sql.type.InferTypes</div>
	</div>
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	<hr>
	<div class="type-signature"><span class="modifiers">public abstract class </span><span class="element-name type-name-label">InferTypes</span>
	<span class="extends-implements">extends <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></span></div>
	<div class="block">Strategies for inferring operand types.</div>
	<dl class="notes">
	<dt>See Also:</dt>
	<dd>
	<ul class="see-list">
	<li><a href="SqlOperandTypeInference.html" title="interface in org.apache.calcite.sql.type"><code>SqlOperandTypeInference</code></a></li>
	<li><a href="ReturnTypes.html" title="class in org.apache.calcite.sql.type"><code>ReturnTypes</code></a></li>
	</ul>
	</dd>
	</dl>
	</section>
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	<li>
	<section class="field-summary" id="field-summary">
	<h2>Field Summary</h2>
	<div class="caption"><span>Fields</span></div>
	<div class="summary-table three-column-summary">
	<div class="table-header col-first">Modifier and Type</div>
	<div class="table-header col-second">Field</div>
	<div class="table-header col-last">Description</div>
	<div class="col-first even-row-color"><code>static final <a href="SqlOperandTypeInference.html" title="interface in org.apache.calcite.sql.type">SqlOperandTypeInference</a></code></div>
	<div class="col-second even-row-color"><code><a href="#ANY_NULLABLE" class="member-name-link">ANY_NULLABLE</a></code></div>
	<div class="col-last even-row-color">
	<div class="block">Operand type-inference strategy where an unknown operand type is assumed
	to be nullable ANY.</div>
	</div>
	<div class="col-first odd-row-color"><code>static final <a href="SqlOperandTypeInference.html" title="interface in org.apache.calcite.sql.type">SqlOperandTypeInference</a></code></div>
	<div class="col-second odd-row-color"><code><a href="#BOOLEAN" class="member-name-link">BOOLEAN</a></code></div>
	<div class="col-last odd-row-color">
	<div class="block">Operand type-inference strategy where an unknown operand type is assumed
	to be boolean.</div>
	</div>
	<div class="col-first even-row-color"><code>static final <a href="SqlOperandTypeInference.html" title="interface in org.apache.calcite.sql.type">SqlOperandTypeInference</a></code></div>
	<div class="col-second even-row-color"><code><a href="#FIRST_KNOWN" class="member-name-link">FIRST_KNOWN</a></code></div>
	<div class="col-last even-row-color">
	<div class="block">Operand type-inference strategy where an unknown operand type is derived
	from the first operand with a known type.</div>
	</div>
	<div class="col-first odd-row-color"><code>static final <a href="SqlOperandTypeInference.html" title="interface in org.apache.calcite.sql.type">SqlOperandTypeInference</a></code></div>
	<div class="col-second odd-row-color"><code><a href="#RETURN_TYPE" class="member-name-link">RETURN_TYPE</a></code></div>
	<div class="col-last odd-row-color">
	<div class="block">Operand type-inference strategy where an unknown operand type is derived
	from the call's return type.</div>
	</div>
	<div class="col-first even-row-color"><code>static final <a href="SqlOperandTypeInference.html" title="interface in org.apache.calcite.sql.type">SqlOperandTypeInference</a></code></div>
	<div class="col-second even-row-color"><code><a href="#VARCHAR_1024" class="member-name-link">VARCHAR_1024</a></code></div>
	<div class="col-last even-row-color">
	<div class="block">Operand type-inference strategy where an unknown operand type is assumed
	to be VARCHAR(1024).</div>
	</div>
	</div>
	</section>
	</li>
	<!-- ========== METHOD SUMMARY =========== -->
	<li>
	<section class="method-summary" id="method-summary">
	<h2>Method Summary</h2>
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	<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-tab1" role="tab" aria-selected="false" aria-controls="method-summary-table.tabpanel" tabindex="-1" onkeydown="switchTab(event)" onclick="show('method-summary-table', 'method-summary-table-tab1', 3)" class="table-tab">Static 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>
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	<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-tab1 method-summary-table-tab4"><code>static <a href="SqlOperandTypeInference.html" title="interface in org.apache.calcite.sql.type">SqlOperandTypeInference</a></code></div>
	<div class="col-second even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#explicit(java.util.List)" class="member-name-link">explicit</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><<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>> types)</code></div>
	<div class="col-last even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4">
	<div class="block">Returns an <a href="SqlOperandTypeInference.html" title="interface in org.apache.calcite.sql.type"><code>SqlOperandTypeInference</code></a> that returns a given list of
	types.</div>
	</div>
	</div>
	</div>
	</div>
	<div class="inherited-list">
	<h3 id="methods-inherited-from-class-java.lang.Object">Methods inherited from class 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">
	<!-- ============ FIELD DETAIL =========== -->
	<li>
	<section class="field-details" id="field-detail">
	<h2>Field Details</h2>
	<ul class="member-list">
	<li>
	<section class="detail" id="FIRST_KNOWN">
	<h3>FIRST_KNOWN</h3>
	<div class="member-signature"><span class="modifiers">public static final</span> <span class="return-type"><a href="SqlOperandTypeInference.html" title="interface in org.apache.calcite.sql.type">SqlOperandTypeInference</a></span> <span class="element-name">FIRST_KNOWN</span></div>
	<div class="block">Operand type-inference strategy where an unknown operand type is derived
	from the first operand with a known type.</div>
	</section>
	</li>
	<li>
	<section class="detail" id="RETURN_TYPE">
	<h3>RETURN_TYPE</h3>
	<div class="member-signature"><span class="modifiers">public static final</span> <span class="return-type"><a href="SqlOperandTypeInference.html" title="interface in org.apache.calcite.sql.type">SqlOperandTypeInference</a></span> <span class="element-name">RETURN_TYPE</span></div>
	<div class="block">Operand type-inference strategy where an unknown operand type is derived
	from the call's return type. If the return type is a record, it must have
	the same number of fields as the number of operands.</div>
	</section>
	</li>
	<li>
	<section class="detail" id="BOOLEAN">
	<h3>BOOLEAN</h3>
	<div class="member-signature"><span class="modifiers">public static final</span> <span class="return-type"><a href="SqlOperandTypeInference.html" title="interface in org.apache.calcite.sql.type">SqlOperandTypeInference</a></span> <span class="element-name">BOOLEAN</span></div>
	<div class="block">Operand type-inference strategy where an unknown operand type is assumed
	to be boolean.</div>
	</section>
	</li>
	<li>
	<section class="detail" id="VARCHAR_1024">
	<h3>VARCHAR_1024</h3>
	<div class="member-signature"><span class="modifiers">public static final</span> <span class="return-type"><a href="SqlOperandTypeInference.html" title="interface in org.apache.calcite.sql.type">SqlOperandTypeInference</a></span> <span class="element-name">VARCHAR_1024</span></div>
	<div class="block">Operand type-inference strategy where an unknown operand type is assumed
	to be VARCHAR(1024). This is not something which should be used in most
	cases (especially since the precision is arbitrary), but for IS [NOT]
	NULL, we don't really care about the type at all, so it's reasonable to
	use something that every other type can be cast to.</div>
	</section>
	</li>
	<li>
	<section class="detail" id="ANY_NULLABLE">
	<h3>ANY_NULLABLE</h3>
	<div class="member-signature"><span class="modifiers">public static final</span> <span class="return-type"><a href="SqlOperandTypeInference.html" title="interface in org.apache.calcite.sql.type">SqlOperandTypeInference</a></span> <span class="element-name">ANY_NULLABLE</span></div>
	<div class="block">Operand type-inference strategy where an unknown operand type is assumed
	to be nullable ANY.</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="explicit(java.util.List)">
	<h3>explicit</h3>
	<div class="member-signature"><span class="modifiers">public static</span> <span class="return-type"><a href="SqlOperandTypeInference.html" title="interface in org.apache.calcite.sql.type">SqlOperandTypeInference</a></span> <span class="element-name">explicit</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><<a href="../../rel/type/RelDataType.html" title="interface in org.apache.calcite.rel.type">RelDataType</a>> types)</span></div>
	<div class="block">Returns an <a href="SqlOperandTypeInference.html" title="interface in org.apache.calcite.sql.type"><code>SqlOperandTypeInference</code></a> that returns a given list of
	types.</div>
	</section>
	</li>
	</ul>
	</section>
	</li>
	</ul>
	</section>
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