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<title>SqlUnresolvedFunction (Apache Calcite API)</title>
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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</a></div>
<h1 title="Class SqlUnresolvedFunction" class="title">Class SqlUnresolvedFunction</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="SqlOperator.html" title="class in org.apache.calcite.sql">org.apache.calcite.sql.SqlOperator</a>
<div class="inheritance"><a href="SqlFunction.html" title="class in org.apache.calcite.sql">org.apache.calcite.sql.SqlFunction</a>
<div class="inheritance">org.apache.calcite.sql.SqlUnresolvedFunction</div>
</div>
</div>
</div>
<section class="class-description" id="class-description">
<hr>
<div class="type-signature"><span class="modifiers">public class </span><span class="element-name type-name-label">SqlUnresolvedFunction</span>
<span class="extends-implements">extends <a href="SqlFunction.html" title="class in org.apache.calcite.sql">SqlFunction</a></span></div>
<div class="block">Placeholder for an unresolved function.
<p>Created by the parser, then it is rewritten to proper SqlFunction by
the validator to a function defined in a Calcite schema.</p></div>
</section>
<section class="summary">
<ul class="summary-list">
<!-- =========== 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.sql.SqlOperator">Fields inherited from class&nbsp;org.apache.calcite.sql.<a href="SqlOperator.html" title="class in org.apache.calcite.sql">SqlOperator</a></h3>
<code><a href="SqlOperator.html#kind">kind</a>, <a href="SqlOperator.html#MDX_PRECEDENCE">MDX_PRECEDENCE</a>, <a href="SqlOperator.html#NL">NL</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.sql.SqlIdentifier,org.apache.calcite.sql.type.SqlReturnTypeInference,org.apache.calcite.sql.type.SqlOperandTypeInference,org.apache.calcite.sql.type.SqlOperandTypeChecker,java.util.List,org.apache.calcite.sql.SqlFunctionCategory)" class="member-name-link">SqlUnresolvedFunction</a><wbr>(<a href="SqlIdentifier.html" title="class in org.apache.calcite.sql">SqlIdentifier</a>&nbsp;sqlIdentifier,
@Nullable <a href="type/SqlReturnTypeInference.html" title="interface in org.apache.calcite.sql.type">SqlReturnTypeInference</a>&nbsp;returnTypeInference,
@Nullable <a href="type/SqlOperandTypeInference.html" title="interface in org.apache.calcite.sql.type">SqlOperandTypeInference</a>&nbsp;operandTypeInference,
@Nullable <a href="type/SqlOperandTypeChecker.html" title="interface in org.apache.calcite.sql.type">SqlOperandTypeChecker</a>&nbsp;operandTypeChecker,
@Nullable <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;paramTypes,
<a href="SqlFunctionCategory.html" title="enum in org.apache.calcite.sql">SqlFunctionCategory</a>&nbsp;funcType)</code></div>
<div class="col-last even-row-color">
<div class="block">Creates a placeholder SqlUnresolvedFunction for an invocation of a function
with a possibly qualified name.</div>
</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><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="#inferReturnType(org.apache.calcite.sql.SqlOperatorBinding)" class="member-name-link">inferReturnType</a><wbr>(<a href="SqlOperatorBinding.html" title="class in org.apache.calcite.sql">SqlOperatorBinding</a>&nbsp;opBinding)</code></div>
<div class="col-last even-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4">
<div class="block">Infers the return type of an invocation of this operator; only called
after the number and types of operands have already been validated.</div>
</div>
</div>
</div>
</div>
<div class="inherited-list">
<h3 id="methods-inherited-from-class-org.apache.calcite.sql.SqlFunction">Methods inherited from class&nbsp;org.apache.calcite.sql.<a href="SqlFunction.html" title="class in org.apache.calcite.sql">SqlFunction</a></h3>
<code><a href="SqlFunction.html#deriveType(org.apache.calcite.sql.validate.SqlValidator,org.apache.calcite.sql.validate.SqlValidatorScope,org.apache.calcite.sql.SqlCall)">deriveType</a>, <a href="SqlFunction.html#getFunctionType()">getFunctionType</a>, <a href="SqlFunction.html#getNameAsId()">getNameAsId</a>, <a href="SqlFunction.html#getParamNames()">getParamNames</a>, <a href="SqlFunction.html#getParamTypes()">getParamTypes</a>, <a href="SqlFunction.html#getSqlIdentifier()">getSqlIdentifier</a>, <a href="SqlFunction.html#getSyntax()">getSyntax</a>, <a href="SqlFunction.html#isQuantifierAllowed()">isQuantifierAllowed</a>, <a href="SqlFunction.html#unparse(org.apache.calcite.sql.SqlWriter,org.apache.calcite.sql.SqlCall,int,int)">unparse</a>, <a href="SqlFunction.html#validateCall(org.apache.calcite.sql.SqlCall,org.apache.calcite.sql.validate.SqlValidator,org.apache.calcite.sql.validate.SqlValidatorScope,org.apache.calcite.sql.validate.SqlValidatorScope)">validateCall</a>, <a href="SqlFunction.html#validateQuantifier(org.apache.calcite.sql.validate.SqlValidator,org.apache.calcite.sql.SqlCall)">validateQuantifier</a></code></div>
<div class="inherited-list">
<h3 id="methods-inherited-from-class-org.apache.calcite.sql.SqlOperator">Methods inherited from class&nbsp;org.apache.calcite.sql.<a href="SqlOperator.html" title="class in org.apache.calcite.sql">SqlOperator</a></h3>
<code><a href="SqlOperator.html#acceptCall(org.apache.calcite.sql.util.SqlVisitor,org.apache.calcite.sql.SqlCall)">acceptCall</a>, <a href="SqlOperator.html#acceptCall(org.apache.calcite.sql.util.SqlVisitor,org.apache.calcite.sql.SqlCall,boolean,org.apache.calcite.sql.util.SqlBasicVisitor.ArgHandler)">acceptCall</a>, <a href="SqlOperator.html#adjustType(org.apache.calcite.sql.validate.SqlValidator,org.apache.calcite.sql.SqlCall,org.apache.calcite.rel.type.RelDataType)">adjustType</a>, <a href="SqlOperator.html#allowsFraming()">allowsFraming</a>, <a href="SqlOperator.html#argumentMustBeScalar(int)">argumentMustBeScalar</a>, <a href="SqlOperator.html#checkOperandCount(org.apache.calcite.sql.validate.SqlValidator,org.apache.calcite.sql.type.SqlOperandTypeChecker,org.apache.calcite.sql.SqlCall)">checkOperandCount</a>, <a href="SqlOperator.html#checkOperandTypes(org.apache.calcite.sql.SqlCallBinding,boolean)">checkOperandTypes</a>, <a href="SqlOperator.html#constructArgNameList(org.apache.calcite.sql.SqlCall)">constructArgNameList</a>, <a href="SqlOperator.html#constructArgTypeList(org.apache.calcite.sql.validate.SqlValidator,org.apache.calcite.sql.validate.SqlValidatorScope,org.apache.calcite.sql.SqlCall,java.util.List,boolean)">constructArgTypeList</a>, <a href="SqlOperator.html#constructOperandList(org.apache.calcite.sql.validate.SqlValidator,org.apache.calcite.sql.SqlCall,java.util.List)">constructOperandList</a>, <a href="SqlOperator.html#createCall(org.apache.calcite.sql.SqlLiteral,org.apache.calcite.sql.parser.SqlParserPos,org.apache.calcite.sql.SqlNode...)">createCall</a>, <a href="SqlOperator.html#createCall(org.apache.calcite.sql.SqlLiteral,org.apache.calcite.sql.parser.SqlParserPos,java.lang.Iterable)">createCall</a>, <a href="SqlOperator.html#createCall(org.apache.calcite.sql.SqlLiteral,org.apache.calcite.sql.parser.SqlParserPos,org.apache.calcite.sql.SqlNodeList)">createCall</a>, <a href="SqlOperator.html#createCall(org.apache.calcite.sql.parser.SqlParserPos,org.apache.calcite.sql.SqlNode...)">createCall</a>, <a href="SqlOperator.html#createCall(org.apache.calcite.sql.parser.SqlParserPos,java.util.List)">createCall</a>, <a href="SqlOperator.html#createCall(org.apache.calcite.sql.parser.SqlParserPos,org.apache.calcite.sql.SqlNodeList)">createCall</a>, <a href="SqlOperator.html#createCall(org.apache.calcite.sql.SqlNodeList)">createCall</a>, <a href="SqlOperator.html#deriveOperandType(org.apache.calcite.sql.validate.SqlValidator,org.apache.calcite.sql.validate.SqlValidatorScope,int,org.apache.calcite.sql.SqlNode)">deriveOperandType</a>, <a href="SqlOperator.html#equals(java.lang.Object)">equals</a>, <a href="SqlOperator.html#getAllowedSignatures()">getAllowedSignatures</a>, <a href="SqlOperator.html#getAllowedSignatures(java.lang.String)">getAllowedSignatures</a>, <a href="SqlOperator.html#getKind()">getKind</a>, <a href="SqlOperator.html#getLeftPrec()">getLeftPrec</a>, <a href="SqlOperator.html#getMonotonicity(org.apache.calcite.sql.SqlCall,org.apache.calcite.sql.validate.SqlValidatorScope)">getMonotonicity</a>, <a href="SqlOperator.html#getMonotonicity(org.apache.calcite.sql.SqlOperatorBinding)">getMonotonicity</a>, <a href="SqlOperator.html#getName()">getName</a>, <a href="SqlOperator.html#getOperandCountRange()">getOperandCountRange</a>, <a href="SqlOperator.html#getOperandTypeChecker()">getOperandTypeChecker</a>, <a href="SqlOperator.html#getOperandTypeInference()">getOperandTypeInference</a>, <a href="SqlOperator.html#getReturnTypeInference()">getReturnTypeInference</a>, <a href="SqlOperator.html#getRightPrec()">getRightPrec</a>, <a href="SqlOperator.html#getSignatureTemplate(int)">getSignatureTemplate</a>, <a href="SqlOperator.html#getStrongPolicyInference()">getStrongPolicyInference</a>, <a href="SqlOperator.html#hashCode()">hashCode</a>, <a href="SqlOperator.html#inferReturnType(org.apache.calcite.rel.type.RelDataTypeFactory,java.util.List)">inferReturnType</a>, <a href="SqlOperator.html#isAggregator()">isAggregator</a>, <a href="SqlOperator.html#isDeterministic()">isDeterministic</a>, <a href="SqlOperator.html#isDynamicFunction()">isDynamicFunction</a>, <a href="SqlOperator.html#isGroup()">isGroup</a>, <a href="SqlOperator.html#isGroupAuxiliary()">isGroupAuxiliary</a>, <a href="SqlOperator.html#isName(java.lang.String,boolean)">isName</a>, <a href="SqlOperator.html#isSymmetrical()">isSymmetrical</a>, <a href="SqlOperator.html#leftPrec(int,boolean)">leftPrec</a>, <a href="SqlOperator.html#not()">not</a>, <a href="SqlOperator.html#preValidateCall(org.apache.calcite.sql.validate.SqlValidator,org.apache.calcite.sql.validate.SqlValidatorScope,org.apache.calcite.sql.SqlCall)">preValidateCall</a>, <a href="SqlOperator.html#requiresDecimalExpansion()">requiresDecimalExpansion</a>, <a href="SqlOperator.html#requiresOrder()">requiresOrder</a>, <a href="SqlOperator.html#requiresOver()">requiresOver</a>, <a href="SqlOperator.html#reverse()">reverse</a>, <a href="SqlOperator.html#rewriteCall(org.apache.calcite.sql.validate.SqlValidator,org.apache.calcite.sql.SqlCall)">rewriteCall</a>, <a href="SqlOperator.html#rightPrec(int,boolean)">rightPrec</a>, <a href="SqlOperator.html#toString()">toString</a>, <a href="SqlOperator.html#unparseListClause(org.apache.calcite.sql.SqlWriter,org.apache.calcite.sql.SqlNode)">unparseListClause</a>, <a href="SqlOperator.html#unparseListClause(org.apache.calcite.sql.SqlWriter,org.apache.calcite.sql.SqlNode,org.apache.calcite.sql.SqlKind)">unparseListClause</a>, <a href="SqlOperator.html#validateOperands(org.apache.calcite.sql.validate.SqlValidator,org.apache.calcite.sql.validate.SqlValidatorScope,org.apache.calcite.sql.SqlCall)">validateOperands</a>, <a href="SqlOperator.html#validRexOperands(int,org.apache.calcite.util.Litmus)">validRexOperands</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#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#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#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.sql.SqlIdentifier,org.apache.calcite.sql.type.SqlReturnTypeInference,org.apache.calcite.sql.type.SqlOperandTypeInference,org.apache.calcite.sql.type.SqlOperandTypeChecker,java.util.List,org.apache.calcite.sql.SqlFunctionCategory)">
<h3>SqlUnresolvedFunction</h3>
<div class="member-signature"><span class="modifiers">public</span>&nbsp;<span class="element-name">SqlUnresolvedFunction</span><wbr><span class="parameters">(<a href="SqlIdentifier.html" title="class in org.apache.calcite.sql">SqlIdentifier</a>&nbsp;sqlIdentifier,
@Nullable <a href="type/SqlReturnTypeInference.html" title="interface in org.apache.calcite.sql.type">SqlReturnTypeInference</a>&nbsp;returnTypeInference,
@Nullable <a href="type/SqlOperandTypeInference.html" title="interface in org.apache.calcite.sql.type">SqlOperandTypeInference</a>&nbsp;operandTypeInference,
@Nullable <a href="type/SqlOperandTypeChecker.html" title="interface in org.apache.calcite.sql.type">SqlOperandTypeChecker</a>&nbsp;operandTypeChecker,
@Nullable <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;paramTypes,
<a href="SqlFunctionCategory.html" title="enum in org.apache.calcite.sql">SqlFunctionCategory</a>&nbsp;funcType)</span></div>
<div class="block">Creates a placeholder SqlUnresolvedFunction for an invocation of a function
with a possibly qualified name. This name must be resolved into either
a builtin function or a user-defined function.</div>
<dl class="notes">
<dt>Parameters:</dt>
<dd><code>sqlIdentifier</code> - possibly qualified identifier for function</dd>
<dd><code>returnTypeInference</code> - strategy to use for return type inference</dd>
<dd><code>operandTypeInference</code> - strategy to use for parameter type inference</dd>
<dd><code>operandTypeChecker</code> - strategy to use for parameter type checking</dd>
<dd><code>paramTypes</code> - array of parameter types</dd>
<dd><code>funcType</code> - function category</dd>
</dl>
</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="inferReturnType(org.apache.calcite.sql.SqlOperatorBinding)">
<h3>inferReturnType</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">inferReturnType</span><wbr><span class="parameters">(<a href="SqlOperatorBinding.html" title="class in org.apache.calcite.sql">SqlOperatorBinding</a>&nbsp;opBinding)</span></div>
<div class="block">Infers the return type of an invocation of this operator; only called
after the number and types of operands have already been validated.
Subclasses must either override this method or supply an instance of
<a href="type/SqlReturnTypeInference.html" title="interface in org.apache.calcite.sql.type"><code>SqlReturnTypeInference</code></a> to the constructor.T
<p>The operator class for this function isn't resolved to the
correct class. This happens in the case of user defined
functions. Return the return type to be 'ANY', so we don't
fail.</div>
<dl class="notes">
<dt>Overrides:</dt>
<dd><code><a href="SqlOperator.html#inferReturnType(org.apache.calcite.sql.SqlOperatorBinding)">inferReturnType</a></code>&nbsp;in class&nbsp;<code><a href="SqlOperator.html" title="class in org.apache.calcite.sql">SqlOperator</a></code></dd>
<dt>Parameters:</dt>
<dd><code>opBinding</code> - description of invocation (not necessarily a
<a href="SqlCall.html" title="class in org.apache.calcite.sql"><code>SqlCall</code></a>)</dd>
<dt>Returns:</dt>
<dd>inferred return type</dd>
</dl>
</section>
</li>
</ul>
</section>
</li>
</ul>
</section>
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