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<div class="subTitle">org.apache.calcite.sql</div>
<h2 title="类 SqlSelectOperator" class="title">类 SqlSelectOperator</h2>
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<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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<ul class="inheritance">
<li><a href="../../../../org/apache/calcite/sql/SqlOperator.html" title="org.apache.calcite.sql中的类">org.apache.calcite.sql.SqlOperator</a></li>
<li>
<ul class="inheritance">
<li>org.apache.calcite.sql.SqlSelectOperator</li>
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<pre>public class <span class="typeNameLabel">SqlSelectOperator</span>
extends <a href="../../../../org/apache/calcite/sql/SqlOperator.html" title="org.apache.calcite.sql中的类">SqlOperator</a></pre>
<div class="block">An operator describing a query. (Not a query itself.)
<p>Operands are:</p>
<ul>
<li>0: distinct (<a href="../../../../org/apache/calcite/sql/SqlLiteral.html" title="org.apache.calcite.sql中的类"><code>SqlLiteral</code></a>)</li>
<li>1: selectClause (<a href="../../../../org/apache/calcite/sql/SqlNodeList.html" title="org.apache.calcite.sql中的类"><code>SqlNodeList</code></a>)</li>
<li>2: fromClause (<a href="../../../../org/apache/calcite/sql/SqlCall.html" title="org.apache.calcite.sql中的类"><code>SqlCall</code></a> to "join" operator)</li>
<li>3: whereClause (<a href="../../../../org/apache/calcite/sql/SqlNode.html" title="org.apache.calcite.sql中的类"><code>SqlNode</code></a>)</li>
<li>4: havingClause (<a href="../../../../org/apache/calcite/sql/SqlNode.html" title="org.apache.calcite.sql中的类"><code>SqlNode</code></a>)</li>
<li>5: groupClause (<a href="../../../../org/apache/calcite/sql/SqlNode.html" title="org.apache.calcite.sql中的类"><code>SqlNode</code></a>)</li>
<li>6: windowClause (<a href="../../../../org/apache/calcite/sql/SqlNodeList.html" title="org.apache.calcite.sql中的类"><code>SqlNodeList</code></a>)</li>
<li>7: orderClause (<a href="../../../../org/apache/calcite/sql/SqlNode.html" title="org.apache.calcite.sql中的类"><code>SqlNode</code></a>)</li>
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<h3>字段概要</h3>
<table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="字段概要表, 列表字段和解释">
<caption><span>字段</span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">限定符和类型</th>
<th class="colLast" scope="col">字段和说明</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <a href="../../../../org/apache/calcite/sql/SqlSelectOperator.html" title="org.apache.calcite.sql中的类">SqlSelectOperator</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/sql/SqlSelectOperator.html#INSTANCE">INSTANCE</a></span></code>&nbsp;</td>
</tr>
</table>
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<h3>从类继承的字段&nbsp;org.apache.calcite.sql.<a href="../../../../org/apache/calcite/sql/SqlOperator.html" title="org.apache.calcite.sql中的类">SqlOperator</a></h3>
<code><a href="../../../../org/apache/calcite/sql/SqlOperator.html#kind">kind</a>, <a href="../../../../org/apache/calcite/sql/SqlOperator.html#MDX_PRECEDENCE">MDX_PRECEDENCE</a>, <a href="../../../../org/apache/calcite/sql/SqlOperator.html#NL">NL</a></code></li>
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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>
<tr>
<th class="colFirst" scope="col">限定符和类型</th>
<th class="colLast" scope="col">方法和说明</th>
</tr>
<tr id="i0" class="altColor">
<td class="colFirst"><code>&lt;R&gt;&nbsp;void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/sql/SqlSelectOperator.html#acceptCall-org.apache.calcite.sql.util.SqlVisitor-org.apache.calcite.sql.SqlCall-boolean-org.apache.calcite.sql.util.SqlBasicVisitor.ArgHandler-">acceptCall</a></span>(<a href="../../../../org/apache/calcite/sql/util/SqlVisitor.html" title="org.apache.calcite.sql.util中的接口">SqlVisitor</a>&lt;R&gt;&nbsp;visitor,
<a href="../../../../org/apache/calcite/sql/SqlCall.html" title="org.apache.calcite.sql中的类">SqlCall</a>&nbsp;call,
boolean&nbsp;onlyExpressions,
<a href="../../../../org/apache/calcite/sql/util/SqlBasicVisitor.ArgHandler.html" title="org.apache.calcite.sql.util中的接口">SqlBasicVisitor.ArgHandler</a>&lt;R&gt;&nbsp;argHandler)</code>
<div class="block">Accepts a <a href="../../../../org/apache/calcite/sql/util/SqlVisitor.html" title="org.apache.calcite.sql.util中的接口"><code>SqlVisitor</code></a>, directing an
<a href="../../../../org/apache/calcite/sql/util/SqlBasicVisitor.ArgHandler.html" title="org.apache.calcite.sql.util中的接口"><code>SqlBasicVisitor.ArgHandler</code></a>
to visit an operand of a call.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/sql/SqlSelectOperator.html#argumentMustBeScalar-int-">argumentMustBeScalar</a></span>(int&nbsp;ordinal)</code>
<div class="block">Returns whether the <code>ordinal</code>th argument to this operator must
be scalar (as opposed to a query).</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code><a href="../../../../org/apache/calcite/sql/SqlCall.html" title="org.apache.calcite.sql中的类">SqlCall</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/sql/SqlSelectOperator.html#createCall-org.apache.calcite.sql.SqlLiteral-org.apache.calcite.sql.parser.SqlParserPos-org.apache.calcite.sql.SqlNode...-">createCall</a></span>(<a href="../../../../org/apache/calcite/sql/SqlLiteral.html" title="org.apache.calcite.sql中的类">SqlLiteral</a>&nbsp;functionQualifier,
<a href="../../../../org/apache/calcite/sql/parser/SqlParserPos.html" title="org.apache.calcite.sql.parser中的类">SqlParserPos</a>&nbsp;pos,
<a href="../../../../org/apache/calcite/sql/SqlNode.html" title="org.apache.calcite.sql中的类">SqlNode</a>...&nbsp;operands)</code>
<div class="block">Creates a call to this operand with an array of operands.</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code><a href="../../../../org/apache/calcite/sql/SqlSelect.html" title="org.apache.calcite.sql中的类">SqlSelect</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/sql/SqlSelectOperator.html#createCall-org.apache.calcite.sql.SqlNodeList-org.apache.calcite.sql.SqlNodeList-org.apache.calcite.sql.SqlNode-org.apache.calcite.sql.SqlNode-org.apache.calcite.sql.SqlNodeList-org.apache.calcite.sql.SqlNode-org.apache.calcite.sql.SqlNodeList-org.apache.calcite.sql.SqlNodeList-org.apache.calcite.sql.SqlNode-org.apache.calcite.sql.SqlNode-org.apache.calcite.sql.SqlNodeList-org.apache.calcite.sql.parser.SqlParserPos-">createCall</a></span>(<a href="../../../../org/apache/calcite/sql/SqlNodeList.html" title="org.apache.calcite.sql中的类">SqlNodeList</a>&nbsp;keywordList,
<a href="../../../../org/apache/calcite/sql/SqlNodeList.html" title="org.apache.calcite.sql中的类">SqlNodeList</a>&nbsp;selectList,
<a href="../../../../org/apache/calcite/sql/SqlNode.html" title="org.apache.calcite.sql中的类">SqlNode</a>&nbsp;fromClause,
<a href="../../../../org/apache/calcite/sql/SqlNode.html" title="org.apache.calcite.sql中的类">SqlNode</a>&nbsp;whereClause,
<a href="../../../../org/apache/calcite/sql/SqlNodeList.html" title="org.apache.calcite.sql中的类">SqlNodeList</a>&nbsp;groupBy,
<a href="../../../../org/apache/calcite/sql/SqlNode.html" title="org.apache.calcite.sql中的类">SqlNode</a>&nbsp;having,
<a href="../../../../org/apache/calcite/sql/SqlNodeList.html" title="org.apache.calcite.sql中的类">SqlNodeList</a>&nbsp;windowDecls,
<a href="../../../../org/apache/calcite/sql/SqlNodeList.html" title="org.apache.calcite.sql中的类">SqlNodeList</a>&nbsp;orderBy,
<a href="../../../../org/apache/calcite/sql/SqlNode.html" title="org.apache.calcite.sql中的类">SqlNode</a>&nbsp;offset,
<a href="../../../../org/apache/calcite/sql/SqlNode.html" title="org.apache.calcite.sql中的类">SqlNode</a>&nbsp;fetch,
<a href="../../../../org/apache/calcite/sql/SqlNodeList.html" title="org.apache.calcite.sql中的类">SqlNodeList</a>&nbsp;hints,
<a href="../../../../org/apache/calcite/sql/parser/SqlParserPos.html" title="org.apache.calcite.sql.parser中的类">SqlParserPos</a>&nbsp;pos)</code>
<div class="block">Creates a call to the <code>SELECT</code> operator.</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code><a href="../../../../org/apache/calcite/sql/SqlSyntax.html" title="org.apache.calcite.sql中的枚举">SqlSyntax</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/sql/SqlSelectOperator.html#getSyntax--">getSyntax</a></span>()</code>
<div class="block">Returns the syntactic type of this operator, never null.</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/calcite/sql/SqlSelectOperator.html#unparse-org.apache.calcite.sql.SqlWriter-org.apache.calcite.sql.SqlCall-int-int-">unparse</a></span>(<a href="../../../../org/apache/calcite/sql/SqlWriter.html" title="org.apache.calcite.sql中的接口">SqlWriter</a>&nbsp;writer,
<a href="../../../../org/apache/calcite/sql/SqlCall.html" title="org.apache.calcite.sql中的类">SqlCall</a>&nbsp;call,
int&nbsp;leftPrec,
int&nbsp;rightPrec)</code>
<div class="block">Writes a SQL representation of a call to this operator to a writer,
including parentheses if the operators on either side are of greater
precedence.</div>
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<h3>从类继承的方法&nbsp;org.apache.calcite.sql.<a href="../../../../org/apache/calcite/sql/SqlOperator.html" title="org.apache.calcite.sql中的类">SqlOperator</a></h3>
<code><a href="../../../../org/apache/calcite/sql/SqlOperator.html#acceptCall-org.apache.calcite.sql.util.SqlVisitor-org.apache.calcite.sql.SqlCall-">acceptCall</a>, <a href="../../../../org/apache/calcite/sql/SqlOperator.html#adjustType-org.apache.calcite.sql.validate.SqlValidator-org.apache.calcite.sql.SqlCall-org.apache.calcite.rel.type.RelDataType-">adjustType</a>, <a href="../../../../org/apache/calcite/sql/SqlOperator.html#allowsFraming--">allowsFraming</a>, <a href="../../../../org/apache/calcite/sql/SqlOperator.html#checkOperandCount-org.apache.calcite.sql.validate.SqlValidator-org.apache.calcite.sql.type.SqlOperandTypeChecker-org.apache.calcite.sql.SqlCall-">checkOperandCount</a>, <a href="../../../../org/apache/calcite/sql/SqlOperator.html#checkOperandTypes-org.apache.calcite.sql.SqlCallBinding-boolean-">checkOperandTypes</a>, <a href="../../../../org/apache/calcite/sql/SqlOperator.html#constructArgNameList-org.apache.calcite.sql.SqlCall-">constructArgNameList</a>, <a href="../../../../org/apache/calcite/sql/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="../../../../org/apache/calcite/sql/SqlOperator.html#constructOperandList-org.apache.calcite.sql.validate.SqlValidator-org.apache.calcite.sql.SqlCall-java.util.List-">constructOperandList</a>, <a href="../../../../org/apache/calcite/sql/SqlOperator.html#createCall-org.apache.calcite.sql.SqlNodeList-">createCall</a>, <a href="../../../../org/apache/calcite/sql/SqlOperator.html#createCall-org.apache.calcite.sql.parser.SqlParserPos-java.util.List-">createCall</a>, <a href="../../../../org/apache/calcite/sql/SqlOperator.html#createCall-org.apache.calcite.sql.parser.SqlParserPos-org.apache.calcite.sql.SqlNode...-">createCall</a>, <a href="../../../../org/apache/calcite/sql/SqlOperator.html#deriveType-org.apache.calcite.sql.validate.SqlValidator-org.apache.calcite.sql.validate.SqlValidatorScope-org.apache.calcite.sql.SqlCall-">deriveType</a>, <a href="../../../../org/apache/calcite/sql/SqlOperator.html#equals-java.lang.Object-">equals</a>, <a href="../../../../org/apache/calcite/sql/SqlOperator.html#getAllowedSignatures--">getAllowedSignatures</a>, <a href="../../../../org/apache/calcite/sql/SqlOperator.html#getAllowedSignatures-java.lang.String-">getAllowedSignatures</a>, <a href="../../../../org/apache/calcite/sql/SqlOperator.html#getKind--">getKind</a>, <a href="../../../../org/apache/calcite/sql/SqlOperator.html#getLeftPrec--">getLeftPrec</a>, <a href="../../../../org/apache/calcite/sql/SqlOperator.html#getMonotonicity-org.apache.calcite.sql.SqlCall-org.apache.calcite.sql.validate.SqlValidatorScope-">getMonotonicity</a>, <a href="../../../../org/apache/calcite/sql/SqlOperator.html#getMonotonicity-org.apache.calcite.sql.SqlOperatorBinding-">getMonotonicity</a>, <a href="../../../../org/apache/calcite/sql/SqlOperator.html#getName--">getName</a>, <a href="../../../../org/apache/calcite/sql/SqlOperator.html#getNameAsId--">getNameAsId</a>, <a href="../../../../org/apache/calcite/sql/SqlOperator.html#getOperandCountRange--">getOperandCountRange</a>, <a href="../../../../org/apache/calcite/sql/SqlOperator.html#getOperandTypeChecker--">getOperandTypeChecker</a>, <a href="../../../../org/apache/calcite/sql/SqlOperator.html#getOperandTypeInference--">getOperandTypeInference</a>, <a href="../../../../org/apache/calcite/sql/SqlOperator.html#getReturnTypeInference--">getReturnTypeInference</a>, <a href="../../../../org/apache/calcite/sql/SqlOperator.html#getRightPrec--">getRightPrec</a>, <a href="../../../../org/apache/calcite/sql/SqlOperator.html#getSignatureTemplate-int-">getSignatureTemplate</a>, <a 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href="../../../../org/apache/calcite/sql/SqlOperator.html#unparseListClause-org.apache.calcite.sql.SqlWriter-org.apache.calcite.sql.SqlNode-">unparseListClause</a>, <a href="../../../../org/apache/calcite/sql/SqlOperator.html#unparseListClause-org.apache.calcite.sql.SqlWriter-org.apache.calcite.sql.SqlNode-org.apache.calcite.sql.SqlKind-">unparseListClause</a>, <a href="../../../../org/apache/calcite/sql/SqlOperator.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="../../../../org/apache/calcite/sql/SqlOperator.html#validateOperands-org.apache.calcite.sql.validate.SqlValidator-org.apache.calcite.sql.validate.SqlValidatorScope-org.apache.calcite.sql.SqlCall-">validateOperands</a>, <a 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<h3>从类继承的方法&nbsp;java.lang.<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></h3>
<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#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#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#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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<h3>字段详细资料</h3>
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<h4>INSTANCE</h4>
<pre>public static final&nbsp;<a href="../../../../org/apache/calcite/sql/SqlSelectOperator.html" title="org.apache.calcite.sql中的类">SqlSelectOperator</a> INSTANCE</pre>
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<h4>getSyntax</h4>
<pre>public&nbsp;<a href="../../../../org/apache/calcite/sql/SqlSyntax.html" title="org.apache.calcite.sql中的枚举">SqlSyntax</a>&nbsp;getSyntax()</pre>
<div class="block"><span class="descfrmTypeLabel">从类复制的说明:&nbsp;<code><a href="../../../../org/apache/calcite/sql/SqlOperator.html#getSyntax--">SqlOperator</a></code></span></div>
<div class="block">Returns the syntactic type of this operator, never null.</div>
<dl>
<dt><span class="overrideSpecifyLabel">指定者:</span></dt>
<dd><code><a href="../../../../org/apache/calcite/sql/SqlOperator.html#getSyntax--">getSyntax</a></code>&nbsp;在类中&nbsp;<code><a href="../../../../org/apache/calcite/sql/SqlOperator.html" title="org.apache.calcite.sql中的类">SqlOperator</a></code></dd>
</dl>
</li>
</ul>
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<h4>createCall</h4>
<pre>public&nbsp;<a href="../../../../org/apache/calcite/sql/SqlCall.html" title="org.apache.calcite.sql中的类">SqlCall</a>&nbsp;createCall(<a href="../../../../org/apache/calcite/sql/SqlLiteral.html" title="org.apache.calcite.sql中的类">SqlLiteral</a>&nbsp;functionQualifier,
<a href="../../../../org/apache/calcite/sql/parser/SqlParserPos.html" title="org.apache.calcite.sql.parser中的类">SqlParserPos</a>&nbsp;pos,
<a href="../../../../org/apache/calcite/sql/SqlNode.html" title="org.apache.calcite.sql中的类">SqlNode</a>...&nbsp;operands)</pre>
<div class="block"><span class="descfrmTypeLabel">从类复制的说明:&nbsp;<code><a href="../../../../org/apache/calcite/sql/SqlOperator.html#createCall-org.apache.calcite.sql.SqlLiteral-org.apache.calcite.sql.parser.SqlParserPos-org.apache.calcite.sql.SqlNode...-">SqlOperator</a></code></span></div>
<div class="block">Creates a call to this operand with an array of operands.
<p>The position of the resulting call is the union of the <code>
pos</code> and the positions of all of the operands.</div>
<dl>
<dt><span class="overrideSpecifyLabel">覆盖:</span></dt>
<dd><code><a href="../../../../org/apache/calcite/sql/SqlOperator.html#createCall-org.apache.calcite.sql.SqlLiteral-org.apache.calcite.sql.parser.SqlParserPos-org.apache.calcite.sql.SqlNode...-">createCall</a></code>&nbsp;在类中&nbsp;<code><a href="../../../../org/apache/calcite/sql/SqlOperator.html" title="org.apache.calcite.sql中的类">SqlOperator</a></code></dd>
<dt><span class="paramLabel">参数:</span></dt>
<dd><code>functionQualifier</code> - function qualifier (e.g. "DISTINCT"), may be</dd>
<dd><code>pos</code> - parser position of the identifier of the call</dd>
<dd><code>operands</code> - array of operands</dd>
</dl>
</li>
</ul>
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<h4>createCall</h4>
<pre>public&nbsp;<a href="../../../../org/apache/calcite/sql/SqlSelect.html" title="org.apache.calcite.sql中的类">SqlSelect</a>&nbsp;createCall(<a href="../../../../org/apache/calcite/sql/SqlNodeList.html" title="org.apache.calcite.sql中的类">SqlNodeList</a>&nbsp;keywordList,
<a href="../../../../org/apache/calcite/sql/SqlNodeList.html" title="org.apache.calcite.sql中的类">SqlNodeList</a>&nbsp;selectList,
<a href="../../../../org/apache/calcite/sql/SqlNode.html" title="org.apache.calcite.sql中的类">SqlNode</a>&nbsp;fromClause,
<a href="../../../../org/apache/calcite/sql/SqlNode.html" title="org.apache.calcite.sql中的类">SqlNode</a>&nbsp;whereClause,
<a href="../../../../org/apache/calcite/sql/SqlNodeList.html" title="org.apache.calcite.sql中的类">SqlNodeList</a>&nbsp;groupBy,
<a href="../../../../org/apache/calcite/sql/SqlNode.html" title="org.apache.calcite.sql中的类">SqlNode</a>&nbsp;having,
<a href="../../../../org/apache/calcite/sql/SqlNodeList.html" title="org.apache.calcite.sql中的类">SqlNodeList</a>&nbsp;windowDecls,
<a href="../../../../org/apache/calcite/sql/SqlNodeList.html" title="org.apache.calcite.sql中的类">SqlNodeList</a>&nbsp;orderBy,
<a href="../../../../org/apache/calcite/sql/SqlNode.html" title="org.apache.calcite.sql中的类">SqlNode</a>&nbsp;offset,
<a href="../../../../org/apache/calcite/sql/SqlNode.html" title="org.apache.calcite.sql中的类">SqlNode</a>&nbsp;fetch,
<a href="../../../../org/apache/calcite/sql/SqlNodeList.html" title="org.apache.calcite.sql中的类">SqlNodeList</a>&nbsp;hints,
<a href="../../../../org/apache/calcite/sql/parser/SqlParserPos.html" title="org.apache.calcite.sql.parser中的类">SqlParserPos</a>&nbsp;pos)</pre>
<div class="block">Creates a call to the <code>SELECT</code> operator.</div>
<dl>
<dt><span class="paramLabel">参数:</span></dt>
<dd><code>keywordList</code> - List of keywords such DISTINCT and ALL, or null</dd>
<dd><code>selectList</code> - The SELECT clause, or null if empty</dd>
<dd><code>fromClause</code> - The FROM clause</dd>
<dd><code>whereClause</code> - The WHERE clause, or null if not present</dd>
<dd><code>groupBy</code> - The GROUP BY clause, or null if not present</dd>
<dd><code>having</code> - The HAVING clause, or null if not present</dd>
<dd><code>windowDecls</code> - The WINDOW clause, or null if not present</dd>
<dd><code>orderBy</code> - The ORDER BY clause, or null if not present</dd>
<dd><code>offset</code> - Expression for number of rows to discard before
returning first row</dd>
<dd><code>fetch</code> - Expression for number of rows to fetch</dd>
<dd><code>pos</code> - The parser position, or
<a href="../../../../org/apache/calcite/sql/parser/SqlParserPos.html#ZERO"><code>SqlParserPos.ZERO</code></a>
if not specified; must not be null.</dd>
<dt><span class="returnLabel">返回:</span></dt>
<dd>A <a href="../../../../org/apache/calcite/sql/SqlSelect.html" title="org.apache.calcite.sql中的类"><code>SqlSelect</code></a>, never null</dd>
</dl>
</li>
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<h4>acceptCall</h4>
<pre>public&nbsp;&lt;R&gt;&nbsp;void&nbsp;acceptCall(<a href="../../../../org/apache/calcite/sql/util/SqlVisitor.html" title="org.apache.calcite.sql.util中的接口">SqlVisitor</a>&lt;R&gt;&nbsp;visitor,
<a href="../../../../org/apache/calcite/sql/SqlCall.html" title="org.apache.calcite.sql中的类">SqlCall</a>&nbsp;call,
boolean&nbsp;onlyExpressions,
<a href="../../../../org/apache/calcite/sql/util/SqlBasicVisitor.ArgHandler.html" title="org.apache.calcite.sql.util中的接口">SqlBasicVisitor.ArgHandler</a>&lt;R&gt;&nbsp;argHandler)</pre>
<div class="block"><span class="descfrmTypeLabel">从类复制的说明:&nbsp;<code><a href="../../../../org/apache/calcite/sql/SqlOperator.html#acceptCall-org.apache.calcite.sql.util.SqlVisitor-org.apache.calcite.sql.SqlCall-boolean-org.apache.calcite.sql.util.SqlBasicVisitor.ArgHandler-">SqlOperator</a></code></span></div>
<div class="block">Accepts a <a href="../../../../org/apache/calcite/sql/util/SqlVisitor.html" title="org.apache.calcite.sql.util中的接口"><code>SqlVisitor</code></a>, directing an
<a href="../../../../org/apache/calcite/sql/util/SqlBasicVisitor.ArgHandler.html" title="org.apache.calcite.sql.util中的接口"><code>SqlBasicVisitor.ArgHandler</code></a>
to visit an operand of a call.
<p>The argument handler allows fine control about how the operands are
visited, and how the results are combined.</div>
<dl>
<dt><span class="overrideSpecifyLabel">覆盖:</span></dt>
<dd><code><a href="../../../../org/apache/calcite/sql/SqlOperator.html#acceptCall-org.apache.calcite.sql.util.SqlVisitor-org.apache.calcite.sql.SqlCall-boolean-org.apache.calcite.sql.util.SqlBasicVisitor.ArgHandler-">acceptCall</a></code>&nbsp;在类中&nbsp;<code><a href="../../../../org/apache/calcite/sql/SqlOperator.html" title="org.apache.calcite.sql中的类">SqlOperator</a></code></dd>
<dt><span class="paramLabel">参数:</span></dt>
<dd><code>visitor</code> - Visitor</dd>
<dd><code>call</code> - Call to visit</dd>
<dd><code>onlyExpressions</code> - If true, ignores operands which are not
expressions. For example, in the call to the
<code>AS</code> operator</dd>
<dd><code>argHandler</code> - Called for each operand</dd>
</dl>
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<h4>unparse</h4>
<pre>public&nbsp;void&nbsp;unparse(<a href="../../../../org/apache/calcite/sql/SqlWriter.html" title="org.apache.calcite.sql中的接口">SqlWriter</a>&nbsp;writer,
<a href="../../../../org/apache/calcite/sql/SqlCall.html" title="org.apache.calcite.sql中的类">SqlCall</a>&nbsp;call,
int&nbsp;leftPrec,
int&nbsp;rightPrec)</pre>
<div class="block"><span class="descfrmTypeLabel">从类复制的说明:&nbsp;<code><a href="../../../../org/apache/calcite/sql/SqlOperator.html#unparse-org.apache.calcite.sql.SqlWriter-org.apache.calcite.sql.SqlCall-int-int-">SqlOperator</a></code></span></div>
<div class="block">Writes a SQL representation of a call to this operator to a writer,
including parentheses if the operators on either side are of greater
precedence.
<p>The default implementation of this method delegates to
<a href="../../../../org/apache/calcite/sql/SqlSyntax.html#unparse-org.apache.calcite.sql.SqlWriter-org.apache.calcite.sql.SqlOperator-org.apache.calcite.sql.SqlCall-int-int-"><code>SqlSyntax.unparse(org.apache.calcite.sql.SqlWriter, org.apache.calcite.sql.SqlOperator, org.apache.calcite.sql.SqlCall, int, int)</code></a>.</div>
<dl>
<dt><span class="overrideSpecifyLabel">覆盖:</span></dt>
<dd><code><a href="../../../../org/apache/calcite/sql/SqlOperator.html#unparse-org.apache.calcite.sql.SqlWriter-org.apache.calcite.sql.SqlCall-int-int-">unparse</a></code>&nbsp;在类中&nbsp;<code><a href="../../../../org/apache/calcite/sql/SqlOperator.html" title="org.apache.calcite.sql中的类">SqlOperator</a></code></dd>
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<h4>argumentMustBeScalar</h4>
<pre>public&nbsp;boolean&nbsp;argumentMustBeScalar(int&nbsp;ordinal)</pre>
<div class="block"><span class="descfrmTypeLabel">从类复制的说明:&nbsp;<code><a href="../../../../org/apache/calcite/sql/SqlOperator.html#argumentMustBeScalar-int-">SqlOperator</a></code></span></div>
<div class="block">Returns whether the <code>ordinal</code>th argument to this operator must
be scalar (as opposed to a query).
<p>If true (the default), the validator will attempt to convert the
argument into a scalar sub-query, which must have one column and return at
most one row.
<p>Operators such as <code>SELECT</code> and <code>EXISTS</code> override
this method.</div>
<dl>
<dt><span class="overrideSpecifyLabel">覆盖:</span></dt>
<dd><code><a href="../../../../org/apache/calcite/sql/SqlOperator.html#argumentMustBeScalar-int-">argumentMustBeScalar</a></code>&nbsp;在类中&nbsp;<code><a href="../../../../org/apache/calcite/sql/SqlOperator.html" title="org.apache.calcite.sql中的类">SqlOperator</a></code></dd>
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