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 <div class="subTitle"><span class="packageLabelInType">Package</span>&nbsp;<a href="package-summary.html">org.apache.calcite.sql</a></div>
 <h2 title="Enum SqlKind" class="title">Enum SqlKind</h2>
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 <li><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Enum.html?is-external=true" title="class or interface in java.lang" class="externalLink">java.lang.Enum</a>&lt;<a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a>&gt;</li>
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 <li>org.apache.calcite.sql.SqlKind</li>
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 <pre>public enum <span class="typeNameLabel">SqlKind</span>
 extends <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Enum.html?is-external=true" title="class or interface in java.lang" class="externalLink">Enum</a>&lt;<a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a>&gt;</pre>
 <div class="block">Enumerates the possible types of <a href="SqlNode.html" title="class in org.apache.calcite.sql"><code>SqlNode</code></a>.

  <p>The values are immutable, canonical constants, so you can use Kinds to
  find particular types of expressions quickly. To identity a call to a common
  operator such as '=', use <a href="SqlNode.html#isA(java.util.Set)"><code>SqlNode.isA(java.util.Set&lt;org.apache.calcite.sql.SqlKind&gt;)</code></a>:</p>

  <blockquote>
  exp.<a href="SqlNode.html#isA(java.util.Set)"><code>isA</code></a>(<a href="#EQUALS"><code>EQUALS</code></a>)
  </blockquote>

  <p>Only commonly-used nodes have their own type; other nodes are of type
  <a href="#OTHER"><code>OTHER</code></a>. Some of the values, such as <a href="#SET_QUERY"><code>SET_QUERY</code></a>, represent
  aggregates.</p>

  <p>To quickly choose between a number of options, use a switch statement:</p>

  <blockquote>
  <pre>switch (exp.getKind()) {
  case <a href="#EQUALS"><code>EQUALS</code></a>:
      ...;
  case <a href="#NOT_EQUALS"><code>NOT_EQUALS</code></a>:
      ...;
  default:
      throw new AssertionError("unexpected");
  }</pre>
  </blockquote>

  <p>Note that we do not even have to check that a <code>SqlNode</code> is a
  <a href="SqlCall.html" title="class in org.apache.calcite.sql"><code>SqlCall</code></a>.</p>

  <p>To identify a category of expressions, use <code>SqlNode.isA</code> with
  an aggregate SqlKind. The following expression will return <code>true</code>
  for calls to '=' and '&gt;=', but <code>false</code> for the constant '5', or
  a call to '+':</p>

  <blockquote>
  <pre>exp.isA(<a href="#COMPARISON"><code>SqlKind.COMPARISON</code></a>)</pre>
  </blockquote>

  <p>RexNode also has a <code>getKind</code> method; <code>SqlKind</code> values are
  preserved during translation from <code>SqlNode</code> to <code>RexNode</code>, where
  applicable.</p>

  <p>There is no water-tight definition of "common", but that's OK. There will
  always be operators that don't have their own kind, and for these we use the
  <code>SqlOperator</code>. But for really the common ones, e.g. the many places
  where we are looking for <code>AND</code>, <code>OR</code> and <code>EQUALS</code>, the enum
  helps.</p>

  <p>(If we were using Scala, <a href="SqlOperator.html" title="class in org.apache.calcite.sql"><code>SqlOperator</code></a> would be a case
  class, and we wouldn't need <code>SqlKind</code>. But we're not.)</p></div>
 </li>
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 <!-- =========== ENUM CONSTANT SUMMARY =========== -->
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 </a>
 <h3>Enum Constant Summary</h3>
 <table class="memberSummary">
 <caption><span>Enum Constants</span><span class="tabEnd">&nbsp;</span></caption>
 <tr>
 <th class="colFirst" scope="col">Enum Constant</th>
 <th class="colLast" scope="col">Description</th>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#ALL">ALL</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>ALL</code> quantification operator.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#ALTER_INDEX">ALTER_INDEX</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>ALTER INDEX</code> DDL statement.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#ALTER_MATERIALIZED_VIEW">ALTER_MATERIALIZED_VIEW</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>ALTER MATERIALIZED VIEW</code> DDL statement.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#ALTER_SEQUENCE">ALTER_SEQUENCE</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>ALTER SEQUENCE</code> DDL statement.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#ALTER_SESSION">ALTER_SESSION</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>ALTER SESSION</code> DDL statement.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#ALTER_TABLE">ALTER_TABLE</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>ALTER TABLE</code> DDL statement.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#ALTER_VIEW">ALTER_VIEW</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>ALTER VIEW</code> DDL statement.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#AND">AND</a></span></code></th>
 <td class="colLast">
 <div class="block">Logical "AND" operator.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#ANY_VALUE">ANY_VALUE</a></span></code></th>
 <td class="colLast">
 <div class="block">The <code>ANY_VALUE</code> aggregate function.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#ARGUMENT_ASSIGNMENT">ARGUMENT_ASSIGNMENT</a></span></code></th>
 <td class="colLast">
 <div class="block">Argument assignment operator, <code>=&gt;</code>.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#ARRAY_QUERY_CONSTRUCTOR">ARRAY_QUERY_CONSTRUCTOR</a></span></code></th>
 <td class="colLast">
 <div class="block">Array Query Constructor, e.g.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#ARRAY_VALUE_CONSTRUCTOR">ARRAY_VALUE_CONSTRUCTOR</a></span></code></th>
 <td class="colLast">
 <div class="block">Array Value Constructor, e.g.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#AS">AS</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>AS</code> operator.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#ATTRIBUTE_DEF">ATTRIBUTE_DEF</a></span></code></th>
 <td class="colLast">
 <div class="block">Attribute definition.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#AVG">AVG</a></span></code></th>
 <td class="colLast">
 <div class="block">The <code>AVG</code> aggregate function.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#BETWEEN">BETWEEN</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>BETWEEN</code> operator.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#BIT_AND">BIT_AND</a></span></code></th>
 <td class="colLast">
 <div class="block">The <code>BIT_AND</code> aggregate function.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#BIT_OR">BIT_OR</a></span></code></th>
 <td class="colLast">
 <div class="block">The <code>BIT_OR</code> aggregate function.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#BIT_XOR">BIT_XOR</a></span></code></th>
 <td class="colLast">
 <div class="block">The <code>BIT_XOR</code> aggregate function.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#CASE">CASE</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>CASE</code> expression.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#CAST">CAST</a></span></code></th>
 <td class="colLast">
 <div class="block">The "CAST" operator, and also the PostgreSQL-style infix cast operator
  "::".</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#CEIL">CEIL</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>CEIL</code> function.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#CHECK">CHECK</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>CHECK</code> constraint.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#CLASSIFIER">CLASSIFIER</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>CLASSIFIER</code> operator in <code>MATCH_RECOGNIZE</code>.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#COALESCE">COALESCE</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>COALESCE</code> operator.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#COLLECT">COLLECT</a></span></code></th>
 <td class="colLast">
 <div class="block">The <code>COLLECT</code> aggregate function.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#COLLECTION_TABLE">COLLECTION_TABLE</a></span></code></th>
 <td class="colLast">
 <div class="block">Table operator which converts user-defined transform into a relation, for
  example, <code>select * from TABLE(udx(x, y, z))</code>.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#COLUMN_DECL">COLUMN_DECL</a></span></code></th>
 <td class="colLast">
 <div class="block">Column declaration.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#COLUMN_LIST">COLUMN_LIST</a></span></code></th>
 <td class="colLast">
 <div class="block">The non-standard constructor used to pass a
  COLUMN_LIST parameter to a user-defined transform.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#COMMIT">COMMIT</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>COMMIT</code> session control statement.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#CONTAINS">CONTAINS</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>CONTAINS</code> operator for periods.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#CORREL_VARIABLE">CORREL_VARIABLE</a></span></code></th>
 <td class="colLast">
 <div class="block">Reference to correlation variable.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#COUNT">COUNT</a></span></code></th>
 <td class="colLast">
 <div class="block">The <code>COUNT</code> aggregate function.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#COVAR_POP">COVAR_POP</a></span></code></th>
 <td class="colLast">
 <div class="block">The <code>COVAR_POP</code> aggregate function.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#COVAR_SAMP">COVAR_SAMP</a></span></code></th>
 <td class="colLast">
 <div class="block">The <code>COVAR_SAMP</code> aggregate function.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#CREATE_FOREIGN_SCHEMA">CREATE_FOREIGN_SCHEMA</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>CREATE FOREIGN SCHEMA</code> DDL statement.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#CREATE_FUNCTION">CREATE_FUNCTION</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>CREATE FUNCTION</code> DDL statement.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#CREATE_INDEX">CREATE_INDEX</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>CREATE INDEX</code> DDL statement.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#CREATE_MATERIALIZED_VIEW">CREATE_MATERIALIZED_VIEW</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>CREATE MATERIALIZED VIEW</code> DDL statement.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#CREATE_SCHEMA">CREATE_SCHEMA</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>CREATE SCHEMA</code> DDL statement.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#CREATE_SEQUENCE">CREATE_SEQUENCE</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>CREATE SEQUENCE</code> DDL statement.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#CREATE_TABLE">CREATE_TABLE</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>CREATE TABLE</code> DDL statement.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#CREATE_TYPE">CREATE_TYPE</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>CREATE TYPE</code> DDL statement.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#CREATE_VIEW">CREATE_VIEW</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>CREATE VIEW</code> DDL statement.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#CUBE">CUBE</a></span></code></th>
 <td class="colLast">
 <div class="block">The internal <code>CUBE</code> operator that occurs within a <code>GROUP BY</code>
  clause.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#CUME_DIST">CUME_DIST</a></span></code></th>
 <td class="colLast">
 <div class="block">The <code>ROW_NUMBER</code> window function.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#CURRENT_VALUE">CURRENT_VALUE</a></span></code></th>
 <td class="colLast">
 <div class="block">The "CURRENT VALUE OF sequence" operator.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#CURSOR">CURSOR</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>CURSOR</code> constructor, for example, <code>SELECT * FROM
  TABLE(udx(CURSOR(SELECT ...), x, y, z))</code>.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#DECODE">DECODE</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>DECODE</code> function (Oracle).</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#DEFAULT">DEFAULT</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>DEFAULT</code> operator.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#DELETE">DELETE</a></span></code></th>
 <td class="colLast">
 <div class="block">DELETE statement.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#DENSE_RANK">DENSE_RANK</a></span></code></th>
 <td class="colLast">
 <div class="block">The <code>DENSE_RANK</code> window function.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#DESCENDING">DESCENDING</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>DESC</code> operator in <code>ORDER BY</code>.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#DESCRIBE_SCHEMA">DESCRIBE_SCHEMA</a></span></code></th>
 <td class="colLast">
 <div class="block">DESCRIBE SCHEMA statement.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#DESCRIBE_TABLE">DESCRIBE_TABLE</a></span></code></th>
 <td class="colLast">
 <div class="block">DESCRIBE TABLE statement.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#DESCRIPTOR">DESCRIPTOR</a></span></code></th>
 <td class="colLast">
 <div class="block">The <code>DESCRIPTOR(column_name, ...)</code>.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#DIVIDE">DIVIDE</a></span></code></th>
 <td class="colLast">
 <div class="block">Arithmetic division operator, "/".</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#DOT">DOT</a></span></code></th>
 <td class="colLast">
 <div class="block">Dot.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#DROP_FUNCTION">DROP_FUNCTION</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>DROP FUNCTION</code> DDL statement.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#DROP_INDEX">DROP_INDEX</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>DROP INDEX</code> DDL statement.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#DROP_MATERIALIZED_VIEW">DROP_MATERIALIZED_VIEW</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>DROP MATERIALIZED VIEW</code> DDL statement.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#DROP_SCHEMA">DROP_SCHEMA</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>DROP SCHEMA</code> DDL statement.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#DROP_SEQUENCE">DROP_SEQUENCE</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>DROP SEQUENCE</code> DDL statement.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#DROP_TABLE">DROP_TABLE</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>DROP TABLE</code> DDL statement.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#DROP_TYPE">DROP_TYPE</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>DROP TYPE</code> DDL statement.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#DROP_VIEW">DROP_VIEW</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>DROP VIEW</code> DDL statement.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#DYNAMIC_PARAM">DYNAMIC_PARAM</a></span></code></th>
 <td class="colLast">
 <div class="block">A dynamic parameter.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#EQUALS">EQUALS</a></span></code></th>
 <td class="colLast">
 <div class="block">Equals operator, "=".</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#ESCAPE">ESCAPE</a></span></code></th>
 <td class="colLast">
 <div class="block">Escape operator (always part of LIKE or SIMILAR TO expression).</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#EXCEPT">EXCEPT</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>EXCEPT</code> relational operator (known as <code>MINUS</code> in some SQL
  dialects).</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#EXISTS">EXISTS</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>EXISTS</code> operator.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#EXPLAIN">EXPLAIN</a></span></code></th>
 <td class="colLast">
 <div class="block">EXPLAIN statement.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#EXPLICIT_TABLE">EXPLICIT_TABLE</a></span></code></th>
 <td class="colLast">
 <div class="block">Explicit table, e.g.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#EXTEND">EXTEND</a></span></code></th>
 <td class="colLast">
 <div class="block">The internal <code>EXTEND</code> operator that qualifies a table name in the
  <code>FROM</code> clause.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#EXTRACT">EXTRACT</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>EXTRACT</code> function.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#FIELD_ACCESS">FIELD_ACCESS</a></span></code></th>
 <td class="colLast">
 <div class="block">The field access operator, ".".</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#FILTER">FILTER</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>FILTER</code> operator.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#FINAL">FINAL</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>FINAL</code> operator in <code>MATCH_RECOGNIZE</code>.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#FIRST">FIRST</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>FIRST</code> operator in <code>MATCH_RECOGNIZE</code>.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#FIRST_VALUE">FIRST_VALUE</a></span></code></th>
 <td class="colLast">
 <div class="block">The <code>FIRST_VALUE</code> aggregate function.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#FLOOR">FLOOR</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>FLOOR</code> function.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#FOLLOWING">FOLLOWING</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>FOLLOWING</code> qualifier of an interval end-point in a window
  specification.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#FOREIGN_KEY">FOREIGN_KEY</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>FOREIGN KEY</code> constraint.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#FUSION">FUSION</a></span></code></th>
 <td class="colLast">
 <div class="block">The <code>FUSION</code> aggregate function.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#GREATER_THAN">GREATER_THAN</a></span></code></th>
 <td class="colLast">
 <div class="block">Greater-than operator, "&gt;".</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#GREATER_THAN_OR_EQUAL">GREATER_THAN_OR_EQUAL</a></span></code></th>
 <td class="colLast">
 <div class="block">Greater-than-or-equal operator, "&gt;=".</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#GREATEST">GREATEST</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>GREATEST</code> function (Oracle).</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#GROUP_ID">GROUP_ID</a></span></code></th>
 <td class="colLast">
 <div class="block">The <code>GROUP_ID()</code> function.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#GROUPING">GROUPING</a></span></code></th>
 <td class="colLast">
 <div class="block">The <code>GROUPING(e, ...)</code> function.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#GROUPING_ID">GROUPING_ID</a></span></code></th>
 <td class="colLast">
 <div class="block"><span class="deprecatedLabel">Deprecated.</span>
 <div class="deprecationComment">Use <a href="#GROUPING"><code>GROUPING</code></a>.</div>
 </div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#GROUPING_SETS">GROUPING_SETS</a></span></code></th>
 <td class="colLast">
 <div class="block">The internal <code>GROUPING SETS</code> operator that occurs within a
  <code>GROUP BY</code> clause.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#HINT">HINT</a></span></code></th>
 <td class="colLast">
 <div class="block">Sql Hint statement.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#HOP">HOP</a></span></code></th>
 <td class="colLast">
 <div class="block">The <code>HOP</code> group function.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#HOP_END">HOP_END</a></span></code></th>
 <td class="colLast">
 <div class="block">The <code>HOP_END</code> auxiliary function of
  the <a href="#HOP"><code>HOP</code></a> group function.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#HOP_START">HOP_START</a></span></code></th>
 <td class="colLast">
 <div class="block">The <code>HOP_START</code> auxiliary function of
  the <a href="#HOP"><code>HOP</code></a> group function.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#IDENTIFIER">IDENTIFIER</a></span></code></th>
 <td class="colLast">
 <div class="block">An identifier.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#IGNORE_NULLS">IGNORE_NULLS</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>IGNORE NULLS</code> operator.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#IMMEDIATELY_PRECEDES">IMMEDIATELY_PRECEDES</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>IMMEDIATELY PRECEDES</code> operator for periods.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#IMMEDIATELY_SUCCEEDS">IMMEDIATELY_SUCCEEDS</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>IMMEDIATELY SUCCEEDS</code> operator for periods.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#IN">IN</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>IN</code> operator.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#INPUT_REF">INPUT_REF</a></span></code></th>
 <td class="colLast">
 <div class="block">Reference to an input field.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#INSERT">INSERT</a></span></code></th>
 <td class="colLast">
 <div class="block">INSERT statement.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#INTERSECT">INTERSECT</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>INTERSECT</code> relational operator.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#INTERSECTION">INTERSECTION</a></span></code></th>
 <td class="colLast">
 <div class="block">The <code>INTERSECTION</code> aggregate function.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#INTERVAL">INTERVAL</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>INTERVAL</code> expression.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#INTERVAL_QUALIFIER">INTERVAL_QUALIFIER</a></span></code></th>
 <td class="colLast">
 <div class="block">Interval qualifier.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#IS_DISTINCT_FROM">IS_DISTINCT_FROM</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>IS DISTINCT FROM</code> operator.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#IS_FALSE">IS_FALSE</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>IS FALSE</code> operator.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#IS_NOT_DISTINCT_FROM">IS_NOT_DISTINCT_FROM</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>IS NOT DISTINCT FROM</code> operator.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#IS_NOT_FALSE">IS_NOT_FALSE</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>IS NOT FALSE</code> operator.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#IS_NOT_NULL">IS_NOT_NULL</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>IS NOT NULL</code> operator.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#IS_NOT_TRUE">IS_NOT_TRUE</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>IS NOT TRUE</code> operator.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#IS_NULL">IS_NULL</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>IS NULL</code> operator.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#IS_TRUE">IS_TRUE</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>IS TRUE</code> operator.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#IS_UNKNOWN">IS_UNKNOWN</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>IS UNKNOWN</code> operator.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#ITEM">ITEM</a></span></code></th>
 <td class="colLast">
 <div class="block">Item expression.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#JDBC_FN">JDBC_FN</a></span></code></th>
 <td class="colLast">
 <div class="block">Call to a function using JDBC function syntax.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#JOIN">JOIN</a></span></code></th>
 <td class="colLast">
 <div class="block">JOIN operator or compound FROM clause.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#JSON_ARRAYAGG">JSON_ARRAYAGG</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>JSON_ARRAYAGG</code> aggregate function.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#JSON_OBJECTAGG">JSON_OBJECTAGG</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>JSON_OBJECTAGG</code> aggregate function.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#JSON_VALUE_EXPRESSION">JSON_VALUE_EXPRESSION</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>JSON</code> value expression.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#LAG">LAG</a></span></code></th>
 <td class="colLast">
 <div class="block">The <code>LAG</code> aggregate function.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#LAST">LAST</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>LAST</code> operator in <code>MATCH_RECOGNIZE</code>.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#LAST_VALUE">LAST_VALUE</a></span></code></th>
 <td class="colLast">
 <div class="block">The <code>LAST_VALUE</code> aggregate function.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#LATERAL">LATERAL</a></span></code></th>
 <td class="colLast">
 <div class="block">The "LATERAL" qualifier to relations in the FROM clause.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#LEAD">LEAD</a></span></code></th>
 <td class="colLast">
 <div class="block">The <code>LEAD</code> aggregate function.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#LEAST">LEAST</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>LEAST</code> function (Oracle).</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#LESS_THAN">LESS_THAN</a></span></code></th>
 <td class="colLast">
 <div class="block">Less-than operator, "&lt;".</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#LESS_THAN_OR_EQUAL">LESS_THAN_OR_EQUAL</a></span></code></th>
 <td class="colLast">
 <div class="block">Less-than-or-equal operator, "&lt;=".</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#LIKE">LIKE</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>LIKE</code> operator.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#LISTAGG">LISTAGG</a></span></code></th>
 <td class="colLast">
 <div class="block">The <code>LISTAGG</code> aggregate function.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#LITERAL">LITERAL</a></span></code></th>
 <td class="colLast">
 <div class="block">A literal.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#LITERAL_CHAIN">LITERAL_CHAIN</a></span></code></th>
 <td class="colLast">
 <div class="block">Literal chain operator (for composite string literals).</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#LOCAL_REF">LOCAL_REF</a></span></code></th>
 <td class="colLast">
 <div class="block">Reference to a sub-expression computed within the current relational
  operator.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#LTRIM">LTRIM</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>LTRIM</code> function (Oracle).</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#MAP_QUERY_CONSTRUCTOR">MAP_QUERY_CONSTRUCTOR</a></span></code></th>
 <td class="colLast">
 <div class="block">MAP query constructor,
  e.g.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#MAP_VALUE_CONSTRUCTOR">MAP_VALUE_CONSTRUCTOR</a></span></code></th>
 <td class="colLast">
 <div class="block">MAP value constructor, e.g.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#MATCH_NUMBER">MATCH_NUMBER</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>MATCH_NUMBER</code> operator in <code>MATCH_RECOGNIZE</code>.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#MATCH_RECOGNIZE">MATCH_RECOGNIZE</a></span></code></th>
 <td class="colLast">
 <div class="block">MATCH_RECOGNIZE clause.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#MAX">MAX</a></span></code></th>
 <td class="colLast">
 <div class="block">The <code>MAX</code> aggregate function.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#MERGE">MERGE</a></span></code></th>
 <td class="colLast">
 <div class="block">MERGE statement.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#MIN">MIN</a></span></code></th>
 <td class="colLast">
 <div class="block">The <code>MIN</code> aggregate function.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#MINUS">MINUS</a></span></code></th>
 <td class="colLast">
 <div class="block">Arithmetic minus operator, "-".</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#MINUS_PREFIX">MINUS_PREFIX</a></span></code></th>
 <td class="colLast">
 <div class="block">Unary minus operator, as in "-1".</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#MOD">MOD</a></span></code></th>
 <td class="colLast">
 <div class="block">Arithmetic remainder operator, "MOD" (and "%" in some dialects).</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#MULTISET_QUERY_CONSTRUCTOR">MULTISET_QUERY_CONSTRUCTOR</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>MULTISET</code> query constructor.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#MULTISET_VALUE_CONSTRUCTOR">MULTISET_VALUE_CONSTRUCTOR</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>MULTISET</code> value constructor.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#NEW_SPECIFICATION">NEW_SPECIFICATION</a></span></code></th>
 <td class="colLast">
 <div class="block">New specification.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#NEXT">NEXT</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>NEXT</code> operator in <code>MATCH_RECOGNIZE</code>.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#NEXT_VALUE">NEXT_VALUE</a></span></code></th>
 <td class="colLast">
 <div class="block">The "NEXT VALUE OF sequence" operator.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#NOT">NOT</a></span></code></th>
 <td class="colLast">
 <div class="block">Logical <code>NOT</code> operator.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#NOT_EQUALS">NOT_EQUALS</a></span></code></th>
 <td class="colLast">
 <div class="block">Not-equals operator, "&#33;=" or "&lt;&gt;".</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#NOT_IN">NOT_IN</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>NOT IN</code> operator.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#NTH_VALUE">NTH_VALUE</a></span></code></th>
 <td class="colLast">
 <div class="block">The <code>NTH_VALUE</code> aggregate function.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#NTILE">NTILE</a></span></code></th>
 <td class="colLast">
 <div class="block">The <code>NTILE</code> aggregate function.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#NULLIF">NULLIF</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>NULLIF</code> operator.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#NULLS_FIRST">NULLS_FIRST</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>NULLS FIRST</code> clause in <code>ORDER BY</code>.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#NULLS_LAST">NULLS_LAST</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>NULLS LAST</code> clause in <code>ORDER BY</code>.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#NVL">NVL</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>NVL</code> function (Oracle).</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#OR">OR</a></span></code></th>
 <td class="colLast">
 <div class="block">Logical "OR" operator.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#ORDER_BY">ORDER_BY</a></span></code></th>
 <td class="colLast">
 <div class="block">ORDER BY clause.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#OTHER">OTHER</a></span></code></th>
 <td class="colLast">
 <div class="block">Expression not covered by any other <a href="SqlKind.html" title="enum in org.apache.calcite.sql"><code>SqlKind</code></a> value.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#OTHER_DDL">OTHER_DDL</a></span></code></th>
 <td class="colLast">
 <div class="block">DDL statement not handled above.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#OTHER_FUNCTION">OTHER_FUNCTION</a></span></code></th>
 <td class="colLast">
 <div class="block">Function that is not a special function.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#OVER">OVER</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>OVER</code> operator.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#OVERLAPS">OVERLAPS</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>OVERLAPS</code> operator for periods.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#PATTERN_ALTER">PATTERN_ALTER</a></span></code></th>
 <td class="colLast">
 <div class="block">Alternation operator in a pattern expression within a
  <code>MATCH_RECOGNIZE</code> clause.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#PATTERN_CONCAT">PATTERN_CONCAT</a></span></code></th>
 <td class="colLast">
 <div class="block">Concatenation operator in a pattern expression within a
  <code>MATCH_RECOGNIZE</code> clause.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#PATTERN_EXCLUDED">PATTERN_EXCLUDED</a></span></code></th>
 <td class="colLast">
 <div class="block">The special patterns to exclude enclosing pattern from output in a
  MATCH_RECOGNIZE clause.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#PATTERN_INPUT_REF">PATTERN_INPUT_REF</a></span></code></th>
 <td class="colLast">
 <div class="block">Reference to an input field, with pattern var as modifier.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#PATTERN_PERMUTE">PATTERN_PERMUTE</a></span></code></th>
 <td class="colLast">
 <div class="block">The internal "permute" function in a MATCH_RECOGNIZE clause.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#PATTERN_QUANTIFIER">PATTERN_QUANTIFIER</a></span></code></th>
 <td class="colLast">
 <div class="block">the repetition quantifier of a pattern factor in a match_recognize clause.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#PERCENT_RANK">PERCENT_RANK</a></span></code></th>
 <td class="colLast">
 <div class="block">The <code>PERCENT_RANK</code> window function.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#PERIOD_EQUALS">PERIOD_EQUALS</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>EQUALS</code> operator for periods.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#PLUS">PLUS</a></span></code></th>
 <td class="colLast">
 <div class="block">Arithmetic plus operator, "+".</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#PLUS_PREFIX">PLUS_PREFIX</a></span></code></th>
 <td class="colLast">
 <div class="block">Unary plus operator, as in "+1".</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#POSITION">POSITION</a></span></code></th>
 <td class="colLast">
 <div class="block">POSITION function.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#POSIX_REGEX_CASE_INSENSITIVE">POSIX_REGEX_CASE_INSENSITIVE</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>~*</code> operator (for case-insensitive POSIX-style regular
  expressions).</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#POSIX_REGEX_CASE_SENSITIVE">POSIX_REGEX_CASE_SENSITIVE</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>~</code> operator (for POSIX-style regular expressions).</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#PRECEDES">PRECEDES</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>PRECEDES</code> operator for periods.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#PRECEDING">PRECEDING</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>PRECEDING</code> qualifier of an interval end-point in a window
  specification.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#PREV">PREV</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>PREV</code> operator in <code>MATCH_RECOGNIZE</code>.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#PRIMARY_KEY">PRIMARY_KEY</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>PRIMARY KEY</code> constraint.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#PROCEDURE_CALL">PROCEDURE_CALL</a></span></code></th>
 <td class="colLast">
 <div class="block">Procedure call.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#RANK">RANK</a></span></code></th>
 <td class="colLast">
 <div class="block">The <code>RANK</code> window function.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#REGR_COUNT">REGR_COUNT</a></span></code></th>
 <td class="colLast">
 <div class="block">The <code>REGR_COUNT</code> aggregate function.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#REGR_SXX">REGR_SXX</a></span></code></th>
 <td class="colLast">
 <div class="block">The <code>REGR_SXX</code> aggregate function.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#REGR_SYY">REGR_SYY</a></span></code></th>
 <td class="colLast">
 <div class="block">The <code>REGR_SYY</code> aggregate function.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#REINTERPRET">REINTERPRET</a></span></code></th>
 <td class="colLast">
 <div class="block">The internal REINTERPRET operator (meaning a reinterpret cast).</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#RESPECT_NULLS">RESPECT_NULLS</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>RESPECT NULLS</code> operator.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#REVERSE">REVERSE</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>REVERSE</code> function (SQL Server, MySQL).</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#ROLLBACK">ROLLBACK</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>ROLLBACK</code> session control statement.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#ROLLUP">ROLLUP</a></span></code></th>
 <td class="colLast">
 <div class="block">The internal <code>ROLLUP</code> operator that occurs within a <code>GROUP BY</code>
  clause.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#ROW">ROW</a></span></code></th>
 <td class="colLast">
 <div class="block">The row-constructor function.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#ROW_NUMBER">ROW_NUMBER</a></span></code></th>
 <td class="colLast">
 <div class="block">The <code>ROW_NUMBER</code> window function.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#RTRIM">RTRIM</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>RTRIM</code> function (Oracle).</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#RUNNING">RUNNING</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>FINAL</code> operator in <code>MATCH_RECOGNIZE</code>.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#SCALAR_QUERY">SCALAR_QUERY</a></span></code></th>
 <td class="colLast">
 <div class="block">Scalar query; that is, a sub-query used in an expression context, and
  returning one row and one column.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#SELECT">SELECT</a></span></code></th>
 <td class="colLast">
 <div class="block">SELECT statement or sub-query.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#SESSION">SESSION</a></span></code></th>
 <td class="colLast">
 <div class="block">The <code>SESSION</code> group function.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#SESSION_END">SESSION_END</a></span></code></th>
 <td class="colLast">
 <div class="block">The <code>SESSION_END</code> auxiliary function of
  the <a href="#SESSION"><code>SESSION</code></a> group function.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#SESSION_START">SESSION_START</a></span></code></th>
 <td class="colLast">
 <div class="block">The <code>SESSION_START</code> auxiliary function of
  the <a href="#SESSION"><code>SESSION</code></a> group function.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#SET_OPTION">SET_OPTION</a></span></code></th>
 <td class="colLast">
 <div class="block">"<code>ALTER scope SET option = value</code>" statement.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#SIMILAR">SIMILAR</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>SIMILAR</code> operator.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#SINGLE_VALUE">SINGLE_VALUE</a></span></code></th>
 <td class="colLast">
 <div class="block">The <code>SINGLE_VALUE</code> aggregate function.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#SKIP_TO_FIRST">SKIP_TO_FIRST</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>SKIP TO FIRST</code> qualifier of restarting point in a
  <code>MATCH_RECOGNIZE</code> clause.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#SKIP_TO_LAST">SKIP_TO_LAST</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>SKIP TO LAST</code> qualifier of restarting point in a
  <code>MATCH_RECOGNIZE</code> clause.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#SNAPSHOT">SNAPSHOT</a></span></code></th>
 <td class="colLast">
 <div class="block">SNAPSHOT operator.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#SOME">SOME</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>SOME</code> quantification operator (also called <code>ANY</code>).</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#STDDEV_POP">STDDEV_POP</a></span></code></th>
 <td class="colLast">
 <div class="block">The <code>STDDEV_POP</code> aggregate function.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#STDDEV_SAMP">STDDEV_SAMP</a></span></code></th>
 <td class="colLast">
 <div class="block">The <code>STDDEV_SAMP</code> aggregate function.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#SUCCEEDS">SUCCEEDS</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>SUCCEEDS</code> operator for periods.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#SUM">SUM</a></span></code></th>
 <td class="colLast">
 <div class="block">The <code>SUM</code> aggregate function.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#SUM0">SUM0</a></span></code></th>
 <td class="colLast">
 <div class="block">The <code>SUM0</code> aggregate function.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#TABLE_INPUT_REF">TABLE_INPUT_REF</a></span></code></th>
 <td class="colLast">
 <div class="block">Reference to an input field, with a qualified name and an identifier.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#TABLE_REF">TABLE_REF</a></span></code></th>
 <td class="colLast">
 <div class="block">Table reference.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#TABLESAMPLE">TABLESAMPLE</a></span></code></th>
 <td class="colLast">
 <div class="block">TABLESAMPLE relational operator.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#TIMES">TIMES</a></span></code></th>
 <td class="colLast">
 <div class="block">Arithmetic multiplication operator, "*".</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#TIMESTAMP_ADD">TIMESTAMP_ADD</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>TIMESTAMP_ADD</code> function (ODBC, SQL Server, MySQL).</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#TIMESTAMP_DIFF">TIMESTAMP_DIFF</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>TIMESTAMP_DIFF</code> function (ODBC, SQL Server, MySQL).</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#TRIM">TRIM</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>TRIM</code> function.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#TUMBLE">TUMBLE</a></span></code></th>
 <td class="colLast">
 <div class="block">The <code>TUMBLE</code> group function.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#TUMBLE_END">TUMBLE_END</a></span></code></th>
 <td class="colLast">
 <div class="block">The <code>TUMBLE_END</code> auxiliary function of
  the <a href="#TUMBLE"><code>TUMBLE</code></a> group function.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#TUMBLE_START">TUMBLE_START</a></span></code></th>
 <td class="colLast">
 <div class="block">The <code>TUMBLE_START</code> auxiliary function of
  the <a href="#TUMBLE"><code>TUMBLE</code></a> group function.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#UNION">UNION</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>UNION</code> relational operator.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#UNIQUE">UNIQUE</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>UNIQUE</code> constraint.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#UNNEST">UNNEST</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>UNNEST</code> operator.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#UPDATE">UPDATE</a></span></code></th>
 <td class="colLast">
 <div class="block">UPDATE statement.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#VALUES">VALUES</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>VALUES</code> relational operator.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#VAR_POP">VAR_POP</a></span></code></th>
 <td class="colLast">
 <div class="block">The <code>VAR_POP</code> aggregate function.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#VAR_SAMP">VAR_SAMP</a></span></code></th>
 <td class="colLast">
 <div class="block">The <code>VAR_SAMP</code> aggregate function.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#WINDOW">WINDOW</a></span></code></th>
 <td class="colLast">
 <div class="block">Window specification.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#WITH">WITH</a></span></code></th>
 <td class="colLast">
 <div class="block">WITH clause.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#WITH_ITEM">WITH_ITEM</a></span></code></th>
 <td class="colLast">
 <div class="block">Item in WITH clause.</div>
 </td>
 </tr>
 <tr class="altColor">
 <th class="colFirst" scope="row"><code><span class="memberNameLink"><a href="#WITHIN_GROUP">WITHIN_GROUP</a></span></code></th>
 <td class="colLast">
 <div class="block"><code>WITHIN GROUP</code> operator.</div>
 </td>
 </tr>
 </table>
 </li>
 </ul>
 </section>
 <!-- =========== FIELD SUMMARY =========== -->
 <section role="region">
 <ul class="blockList">
 <li class="blockList"><a id="field.summary">
 <!--   -->
 </a>
 <h3>Field Summary</h3>
 <table class="memberSummary">
 <caption><span>Fields</span><span class="tabEnd">&nbsp;</span></caption>
 <tr>
 <th class="colFirst" scope="col">Modifier and Type</th>
 <th class="colSecond" scope="col">Field</th>
 <th class="colLast" scope="col">Description</th>
 </tr>
 <tr class="altColor">
 <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/9/docs/api/java/util/EnumSet.html?is-external=true" title="class or interface in java.util" class="externalLink">EnumSet</a>&lt;<a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a>&gt;</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#AGGREGATE">AGGREGATE</a></span></code></th>
 <td class="colLast">
 <div class="block">Category consisting of all built-in aggregate functions.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/9/docs/api/java/util/Set.html?is-external=true" title="class or interface in java.util" class="externalLink">Set</a>&lt;<a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a>&gt;</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#AVG_AGG_FUNCTIONS">AVG_AGG_FUNCTIONS</a></span></code></th>
 <td class="colLast">
 <div class="block">Category of SqlAvgAggFunction.</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/9/docs/api/java/util/Set.html?is-external=true" title="class or interface in java.util" class="externalLink">Set</a>&lt;<a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a>&gt;</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#BINARY_ARITHMETIC">BINARY_ARITHMETIC</a></span></code></th>
 <td class="colLast">
 <div class="block">Category of binary arithmetic.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/9/docs/api/java/util/Set.html?is-external=true" title="class or interface in java.util" class="externalLink">Set</a>&lt;<a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a>&gt;</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#BINARY_COMPARISON">BINARY_COMPARISON</a></span></code></th>
 <td class="colLast">
 <div class="block">Category of binary comparison.</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/9/docs/api/java/util/Set.html?is-external=true" title="class or interface in java.util" class="externalLink">Set</a>&lt;<a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a>&gt;</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#BINARY_EQUALITY">BINARY_EQUALITY</a></span></code></th>
 <td class="colLast">
 <div class="block">Category of binary equality.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/9/docs/api/java/util/Set.html?is-external=true" title="class or interface in java.util" class="externalLink">Set</a>&lt;<a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a>&gt;</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#COMPARISON">COMPARISON</a></span></code></th>
 <td class="colLast">
 <div class="block">Category of comparison operators.</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/9/docs/api/java/util/Set.html?is-external=true" title="class or interface in java.util" class="externalLink">Set</a>&lt;<a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a>&gt;</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#COVAR_AVG_AGG_FUNCTIONS">COVAR_AVG_AGG_FUNCTIONS</a></span></code></th>
 <td class="colLast">
 <div class="block">Category of SqlCovarAggFunction.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/9/docs/api/java/util/EnumSet.html?is-external=true" title="class or interface in java.util" class="externalLink">EnumSet</a>&lt;<a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a>&gt;</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#DDL">DDL</a></span></code></th>
 <td class="colLast">
 <div class="block">Category consisting of all DDL operators.</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/9/docs/api/java/util/EnumSet.html?is-external=true" title="class or interface in java.util" class="externalLink">EnumSet</a>&lt;<a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a>&gt;</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#DML">DML</a></span></code></th>
 <td class="colLast">
 <div class="block">Category consisting of all DML operators.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/9/docs/api/java/util/Set.html?is-external=true" title="class or interface in java.util" class="externalLink">Set</a>&lt;<a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a>&gt;</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#EXPRESSION">EXPRESSION</a></span></code></th>
 <td class="colLast">
 <div class="block">Category consisting of all expression operators.</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/9/docs/api/java/util/Set.html?is-external=true" title="class or interface in java.util" class="externalLink">Set</a>&lt;<a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a>&gt;</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#FUNCTION">FUNCTION</a></span></code></th>
 <td class="colLast">
 <div class="block">Category consisting of regular and special functions.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colFirst"><code><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#lowerName">lowerName</a></span></code></th>
 <td class="colLast">
 <div class="block">Lower-case name.</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/9/docs/api/java/util/EnumSet.html?is-external=true" title="class or interface in java.util" class="externalLink">EnumSet</a>&lt;<a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a>&gt;</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#QUERY">QUERY</a></span></code></th>
 <td class="colLast">
 <div class="block">Category consisting of query node types.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/9/docs/api/java/util/EnumSet.html?is-external=true" title="class or interface in java.util" class="externalLink">EnumSet</a>&lt;<a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a>&gt;</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#SET_QUERY">SET_QUERY</a></span></code></th>
 <td class="colLast">
 <div class="block">Category consisting of set-query node types.</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/9/docs/api/java/util/Set.html?is-external=true" title="class or interface in java.util" class="externalLink">Set</a>&lt;<a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a>&gt;</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#SIMPLE_BINARY_OPS">SIMPLE_BINARY_OPS</a></span></code></th>
 <td class="colLast">
 <div class="block">Simple binary operators are those operators which expects operands from the same Domain.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colFirst"><code><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#sql">sql</a></span></code></th>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr class="altColor">
 <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/9/docs/api/java/util/Set.html?is-external=true" title="class or interface in java.util" class="externalLink">Set</a>&lt;<a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a>&gt;</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#SYMMETRICAL">SYMMETRICAL</a></span></code></th>
 <td class="colLast">
 <div class="block">Category of operators that do not depend on the argument order.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/9/docs/api/java/util/Set.html?is-external=true" title="class or interface in java.util" class="externalLink">Set</a>&lt;<a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a>&gt;</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#SYMMETRICAL_SAME_ARG_TYPE">SYMMETRICAL_SAME_ARG_TYPE</a></span></code></th>
 <td class="colLast">
 <div class="block">Category of operators that do not depend on the argument order if argument types are equal.</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/9/docs/api/java/util/EnumSet.html?is-external=true" title="class or interface in java.util" class="externalLink">EnumSet</a>&lt;<a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a>&gt;</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#TOP_LEVEL">TOP_LEVEL</a></span></code></th>
 <td class="colLast">
 <div class="block">Category of all SQL statement types.</div>
 </td>
 </tr>
 </table>
 </li>
 </ul>
 </section>
 <!-- ========== METHOD SUMMARY =========== -->
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 <h3>Method Summary</h3>
 <table class="memberSummary">
 <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd">&nbsp;</span></span></caption>
 <tr>
 <th class="colFirst" scope="col">Modifier and Type</th>
 <th class="colSecond" scope="col">Method</th>
 <th class="colLast" scope="col">Description</th>
 </tr>
 <tr id="i0" class="altColor">
 <td class="colFirst"><code>boolean</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#belongsTo(java.util.Collection)">belongsTo</a></span>&#8203;(<a href="https://docs.oracle.com/javase/9/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util" class="externalLink">Collection</a>&lt;<a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a>&gt;&nbsp;category)</code></th>
 <td class="colLast">
 <div class="block">Returns whether this <code>SqlKind</code> belongs to a given category.</div>
 </td>
 </tr>
 <tr id="i1" class="rowColor">
 <td class="colFirst"><code><a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a></code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#negate()">negate</a></span>()</code></th>
 <td class="colLast">
 <div class="block">Returns the kind that you get if you apply NOT to this kind.</div>
 </td>
 </tr>
 <tr id="i2" class="altColor">
 <td class="colFirst"><code><a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a></code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#negateNullSafe()">negateNullSafe</a></span>()</code></th>
 <td class="colLast">
 <div class="block">Returns the kind that you get if you negate this kind.</div>
 </td>
 </tr>
 <tr id="i3" class="rowColor">
 <td class="colFirst"><code><a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a></code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#reverse()">reverse</a></span>()</code></th>
 <td class="colLast">
 <div class="block">Returns the kind that corresponds to this operator but in the opposite
  direction.</div>
 </td>
 </tr>
 <tr id="i4" class="altColor">
 <td class="colFirst"><code>static <a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a></code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#valueOf(java.lang.String)">valueOf</a></span>&#8203;(<a href="https://docs.oracle.com/javase/9/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;name)</code></th>
 <td class="colLast">
 <div class="block">Returns the enum constant of this type with the specified name.</div>
 </td>
 </tr>
 <tr id="i5" class="rowColor">
 <td class="colFirst"><code>static <a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a>[]</code></td>
 <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#values()">values</a></span>()</code></th>
 <td class="colLast">
 <div class="block">Returns an array containing the constants of this enum type, in
 the order they are declared.</div>
 </td>
 </tr>
 </table>
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 <h3>Methods inherited from class&nbsp;java.lang.<a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Enum.html?is-external=true" title="class or interface in java.lang" class="externalLink">Enum</a></h3>
 <code><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Enum.html?is-external=true#clone()" title="class or interface in java.lang" class="externalLink">clone</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Enum.html?is-external=true#compareTo(E)" title="class or interface in java.lang" class="externalLink">compareTo</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Enum.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang" class="externalLink">equals</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Enum.html?is-external=true#finalize()" title="class or interface in java.lang" class="externalLink">finalize</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Enum.html?is-external=true#getDeclaringClass()" title="class or interface in java.lang" class="externalLink">getDeclaringClass</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Enum.html?is-external=true#hashCode()" title="class or interface in java.lang" class="externalLink">hashCode</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Enum.html?is-external=true#name()" title="class or interface in java.lang" class="externalLink">name</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Enum.html?is-external=true#ordinal()" title="class or interface in java.lang" class="externalLink">ordinal</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Enum.html?is-external=true#toString()" title="class or interface in java.lang" class="externalLink">toString</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Enum.html?is-external=true#valueOf(java.lang.Class,java.lang.String)" title="class or interface in java.lang" class="externalLink">valueOf</a></code></li>
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 <h3>Methods inherited from class&nbsp;java.lang.<a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink">Object</a></h3>
 <code><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang" class="externalLink">getClass</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang" class="externalLink">notify</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang" class="externalLink">notifyAll</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang" class="externalLink">wait</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang" class="externalLink">wait</a>, <a href="https://docs.oracle.com/javase/9/docs/api/java/lang/Object.html?is-external=true#wait(long,int)" title="class or interface in java.lang" class="externalLink">wait</a></code></li>
 </ul>
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 </ul>
 </section>
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 </ul>
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 <pre>public static final&nbsp;<a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a> OTHER</pre>
 <div class="block">Expression not covered by any other <a href="SqlKind.html" title="enum in org.apache.calcite.sql"><code>SqlKind</code></a> value.</div>
 <dl>
 <dt><span class="seeLabel">See Also:</span></dt>
 <dd><a href="#OTHER_FUNCTION"><code>OTHER_FUNCTION</code></a></dd>
 </dl>
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 <h4>SELECT</h4>
 <pre>public static final&nbsp;<a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a> SELECT</pre>
 <div class="block">SELECT statement or sub-query.</div>
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 <pre>public static final&nbsp;<a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a> HINT</pre>
 <div class="block">Sql Hint statement.</div>
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 <pre>public static final&nbsp;<a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a> TABLE_REF</pre>
 <div class="block">Table reference.</div>
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 <pre>public static final&nbsp;<a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a> JOIN</pre>
 <div class="block">JOIN operator or compound FROM clause.

  <p>A FROM clause with more than one table is represented as if it were a
  join. For example, "FROM x, y, z" is represented as
  "JOIN(x, JOIN(x, y))".</p></div>
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 <pre>public static final&nbsp;<a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a> IDENTIFIER</pre>
 <div class="block">An identifier.</div>
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 <dl>
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 <dd><a href="#FUNCTION"><code>FUNCTION</code></a></dd>
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 <div class="block">"<code>ALTER scope SET option = value</code>" statement.</div>
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 <dl>
 <dt><span class="seeLabel">See Also:</span></dt>
 <dd><a href="#DESCENDING"><code>DESCENDING</code></a>,
 <a href="#NULLS_FIRST"><code>NULLS_FIRST</code></a>,
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 <div class="block"><code>UNION</code> relational operator.</div>
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 <pre>public static final&nbsp;<a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a> EXCEPT</pre>
 <div class="block"><code>EXCEPT</code> relational operator (known as <code>MINUS</code> in some SQL
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 <div class="block">Argument assignment operator, <code>=&gt;</code>.</div>
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 <div class="block"><code>WITHIN GROUP</code> operator.</div>
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 <div class="block">TABLESAMPLE relational operator.</div>
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 <div class="block">MATCH_RECOGNIZE clause.</div>
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 <div class="block">SNAPSHOT operator.</div>
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 <div class="block">Arithmetic multiplication operator, "*".</div>
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 <div class="block">Arithmetic division operator, "/".</div>
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 <pre>public static final&nbsp;<a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a> MOD</pre>
 <div class="block">Arithmetic remainder operator, "MOD" (and "%" in some dialects).</div>
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 <pre>public static final&nbsp;<a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a> PLUS</pre>
 <div class="block">Arithmetic plus operator, "+".</div>
 <dl>
 <dt><span class="seeLabel">See Also:</span></dt>
 <dd><a href="#PLUS_PREFIX"><code>PLUS_PREFIX</code></a></dd>
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 <pre>public static final&nbsp;<a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a> MINUS</pre>
 <div class="block">Arithmetic minus operator, "-".</div>
 <dl>
 <dt><span class="seeLabel">See Also:</span></dt>
 <dd><a href="#MINUS_PREFIX"><code>MINUS_PREFIX</code></a></dd>
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 <div class="block">Alternation operator in a pattern expression within a
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 <div class="block">Concatenation operator in a pattern expression within a
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 <pre>public static final&nbsp;<a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a> IN</pre>
 <div class="block"><code>IN</code> operator.</div>
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 <div class="block"><code>NOT IN</code> operator.

  <p>Only occurs in SqlNode trees. Is expanded to NOT(IN ...) before
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 <div class="block">Less-than operator, "&lt;".</div>
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 <div class="block">Greater-than operator, "&gt;".</div>
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 <div class="block">Less-than-or-equal operator, "&lt;=".</div>
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 <div class="block">Greater-than-or-equal operator, "&gt;=".</div>
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 <pre>public static final&nbsp;<a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a> EQUALS</pre>
 <div class="block">Equals operator, "=".</div>
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 <pre>public static final&nbsp;<a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a> NOT_EQUALS</pre>
 <div class="block">Not-equals operator, "&#33;=" or "&lt;&gt;".
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 <div class="block"><code>IS DISTINCT FROM</code> operator.</div>
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 <div class="block"><code>IS NOT DISTINCT FROM</code> operator.</div>
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 <pre>public static final&nbsp;<a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a> OR</pre>
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 <pre>public static final&nbsp;<a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a> AND</pre>
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 <pre>public static final&nbsp;<a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a> OVERLAPS</pre>
 <div class="block"><code>OVERLAPS</code> operator for periods.</div>
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 <div class="block"><code>CONTAINS</code> operator for periods.</div>
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 <pre>public static final&nbsp;<a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a> PRECEDES</pre>
 <div class="block"><code>PRECEDES</code> operator for periods.</div>
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 <pre>public static final&nbsp;<a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a> IMMEDIATELY_PRECEDES</pre>
 <div class="block"><code>IMMEDIATELY PRECEDES</code> operator for periods.</div>
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 <div class="block"><code>SUCCEEDS</code> operator for periods.</div>
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 <div class="block"><code>IMMEDIATELY SUCCEEDS</code> operator for periods.</div>
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 <div class="block"><code>EQUALS</code> operator for periods.</div>
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 <pre>public static final&nbsp;<a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a> POSIX_REGEX_CASE_SENSITIVE</pre>
 <div class="block"><code>~</code> operator (for POSIX-style regular expressions).</div>
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 <div class="block"><code>~*</code> operator (for case-insensitive POSIX-style regular
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 <div class="block">The field access operator, ".".

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 <div class="block"><code>CREATE MATERIALIZED VIEW</code> DDL statement.</div>
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 <div class="block">Category consisting of set-query node types.

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 <div class="block">Category consisting of all expression operators.

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 <div class="block">Category of all SQL statement types.

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 <pre>public static final&nbsp;<a href="https://docs.oracle.com/javase/9/docs/api/java/util/Set.html?is-external=true" title="class or interface in java.util" class="externalLink">Set</a>&lt;<a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a>&gt; FUNCTION</pre>
 <div class="block">Category consisting of regular and special functions.

  <p>Consists of regular functions <a href="#OTHER_FUNCTION"><code>OTHER_FUNCTION</code></a> and special
  functions <a href="#ROW"><code>ROW</code></a>, <a href="#TRIM"><code>TRIM</code></a>, <a href="#CAST"><code>CAST</code></a>, <a href="#REVERSE"><code>REVERSE</code></a>, <a href="#JDBC_FN"><code>JDBC_FN</code></a>.</div>
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 <div class="block">Category of SqlAvgAggFunction.

  <p>Consists of <a href="#AVG"><code>AVG</code></a>, <a href="#STDDEV_POP"><code>STDDEV_POP</code></a>, <a href="#STDDEV_SAMP"><code>STDDEV_SAMP</code></a>,
  <a href="#VAR_POP"><code>VAR_POP</code></a>, <a href="#VAR_SAMP"><code>VAR_SAMP</code></a>.</div>
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 <div class="block">Category of SqlCovarAggFunction.

  <p>Consists of <a href="#COVAR_POP"><code>COVAR_POP</code></a>, <a href="#COVAR_SAMP"><code>COVAR_SAMP</code></a>, <a href="#REGR_SXX"><code>REGR_SXX</code></a>,
  <a href="#REGR_SYY"><code>REGR_SYY</code></a>.</div>
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 <pre>public static final&nbsp;<a href="https://docs.oracle.com/javase/9/docs/api/java/util/Set.html?is-external=true" title="class or interface in java.util" class="externalLink">Set</a>&lt;<a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a>&gt; COMPARISON</pre>
 <div class="block">Category of comparison operators.

  <p>Consists of:
  <a href="#IN"><code>IN</code></a>,
  <a href="#EQUALS"><code>EQUALS</code></a>,
  <a href="#NOT_EQUALS"><code>NOT_EQUALS</code></a>,
  <a href="#LESS_THAN"><code>LESS_THAN</code></a>,
  <a href="#GREATER_THAN"><code>GREATER_THAN</code></a>,
  <a href="#LESS_THAN_OR_EQUAL"><code>LESS_THAN_OR_EQUAL</code></a>,
  <a href="#GREATER_THAN_OR_EQUAL"><code>GREATER_THAN_OR_EQUAL</code></a>.</div>
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 <pre>public static final&nbsp;<a href="https://docs.oracle.com/javase/9/docs/api/java/util/Set.html?is-external=true" title="class or interface in java.util" class="externalLink">Set</a>&lt;<a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a>&gt; BINARY_ARITHMETIC</pre>
 <div class="block">Category of binary arithmetic.

  <p>Consists of:
  <a href="#PLUS"><code>PLUS</code></a>
  <a href="#MINUS"><code>MINUS</code></a>
  <a href="#TIMES"><code>TIMES</code></a>
  <a href="#DIVIDE"><code>DIVIDE</code></a>
  <a href="#MOD"><code>MOD</code></a>.</div>
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 <pre>public static final&nbsp;<a href="https://docs.oracle.com/javase/9/docs/api/java/util/Set.html?is-external=true" title="class or interface in java.util" class="externalLink">Set</a>&lt;<a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a>&gt; BINARY_EQUALITY</pre>
 <div class="block">Category of binary equality.

  <p>Consists of:
  <a href="#EQUALS"><code>EQUALS</code></a>
  <a href="#NOT_EQUALS"><code>NOT_EQUALS</code></a></div>
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 <pre>public static final&nbsp;<a href="https://docs.oracle.com/javase/9/docs/api/java/util/Set.html?is-external=true" title="class or interface in java.util" class="externalLink">Set</a>&lt;<a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a>&gt; BINARY_COMPARISON</pre>
 <div class="block">Category of binary comparison.

  <p>Consists of:
  <a href="#EQUALS"><code>EQUALS</code></a>
  <a href="#NOT_EQUALS"><code>NOT_EQUALS</code></a>
  <a href="#GREATER_THAN"><code>GREATER_THAN</code></a>
  <a href="#GREATER_THAN_OR_EQUAL"><code>GREATER_THAN_OR_EQUAL</code></a>
  <a href="#LESS_THAN"><code>LESS_THAN</code></a>
  <a href="#LESS_THAN_OR_EQUAL"><code>LESS_THAN_OR_EQUAL</code></a>
  <a href="#IS_DISTINCT_FROM"><code>IS_DISTINCT_FROM</code></a>
  <a href="#IS_NOT_DISTINCT_FROM"><code>IS_NOT_DISTINCT_FROM</code></a></div>
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 <pre>@API(since="1.22",
      status=EXPERIMENTAL)
 public static final&nbsp;<a href="https://docs.oracle.com/javase/9/docs/api/java/util/Set.html?is-external=true" title="class or interface in java.util" class="externalLink">Set</a>&lt;<a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a>&gt; SYMMETRICAL</pre>
 <div class="block">Category of operators that do not depend on the argument order.

  <p>For instance: <a href="#AND"><code>AND</code></a>, <a href="#OR"><code>OR</code></a>, <a href="#EQUALS"><code>EQUALS</code></a>, <a href="#LEAST"><code>LEAST</code></a></p>
  <p>Note: <a href="#PLUS"><code>PLUS</code></a> does depend on the argument oder if argument types are different</p></div>
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 <pre>@API(since="1.22",
      status=EXPERIMENTAL)
 public static final&nbsp;<a href="https://docs.oracle.com/javase/9/docs/api/java/util/Set.html?is-external=true" title="class or interface in java.util" class="externalLink">Set</a>&lt;<a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a>&gt; SYMMETRICAL_SAME_ARG_TYPE</pre>
 <div class="block">Category of operators that do not depend on the argument order if argument types are equal.

  <p>For instance: <a href="#PLUS"><code>PLUS</code></a>, <a href="#TIMES"><code>TIMES</code></a></p></div>
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 <pre>@API(since="1.24",
      status=EXPERIMENTAL)
 public static final&nbsp;<a href="https://docs.oracle.com/javase/9/docs/api/java/util/Set.html?is-external=true" title="class or interface in java.util" class="externalLink">Set</a>&lt;<a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a>&gt; SIMPLE_BINARY_OPS</pre>
 <div class="block">Simple binary operators are those operators which expects operands from the same Domain.

  <p>Example: simple comparisions (<code>=</code>, <code>&lt;</code>).

  <p>Note: it does not contain <code>IN</code> because that is defined on D x D^n.</div>
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 <pre>public final&nbsp;<a href="https://docs.oracle.com/javase/9/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a> lowerName</pre>
 <div class="block">Lower-case name.</div>
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 <pre>public final&nbsp;<a href="https://docs.oracle.com/javase/9/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a> sql</pre>
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 <pre class="methodSignature">public static&nbsp;<a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a>[]&nbsp;values()</pre>
 <div class="block">Returns an array containing the constants of this enum type, in
 the order they are declared. This method may be used to iterate
 over the constants as follows:
 <pre>
 for (SqlKind c : SqlKind.values())
 &nbsp;   System.out.println(c);
 </pre></div>
 <dl>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>an array containing the constants of this enum type, in the order they are declared</dd>
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 <pre class="methodSignature">public static&nbsp;<a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a>&nbsp;valueOf&#8203;(<a href="https://docs.oracle.com/javase/9/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;name)</pre>
 <div class="block">Returns the enum constant of this type with the specified name.
 The string must match <i>exactly</i> an identifier used to declare an
 enum constant in this type.  (Extraneous whitespace characters are
 not permitted.)</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>name</code> - the name of the enum constant to be returned.</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>the enum constant with the specified name</dd>
 <dt><span class="throwsLabel">Throws:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="class or interface in java.lang" class="externalLink">IllegalArgumentException</a></code> - if this enum type has no constant with the specified name</dd>
 <dd><code><a href="https://docs.oracle.com/javase/9/docs/api/java/lang/NullPointerException.html?is-external=true" title="class or interface in java.lang" class="externalLink">NullPointerException</a></code> - if the argument is null</dd>
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 <pre class="methodSignature">public&nbsp;<a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a>&nbsp;reverse()</pre>
 <div class="block">Returns the kind that corresponds to this operator but in the opposite
  direction. Or returns this, if this kind is not reversible.

  <p>For example, <code>GREATER_THAN.reverse()</code> returns <a href="#LESS_THAN"><code>LESS_THAN</code></a>.</div>
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 <pre class="methodSignature">public&nbsp;<a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a>&nbsp;negate()</pre>
 <div class="block">Returns the kind that you get if you apply NOT to this kind.

  <p>For example, <code>IS_NOT_NULL.negate()</code> returns <a href="#IS_NULL"><code>IS_NULL</code></a>.

  <p>For <a href="#IS_TRUE"><code>IS_TRUE</code></a>, <a href="#IS_FALSE"><code>IS_FALSE</code></a>, <a href="#IS_NOT_TRUE"><code>IS_NOT_TRUE</code></a>,
  <a href="#IS_NOT_FALSE"><code>IS_NOT_FALSE</code></a>, nullable inputs need to be treated carefully.

  <p><code>NOT(IS_TRUE(null))</code> = <code>NOT(false)</code> = <code>true</code>,
  while <code>IS_FALSE(null)</code> = <code>false</code>,
  so <code>NOT(IS_TRUE(X))</code> should be <code>IS_NOT_TRUE(X)</code>.
  On the other hand,
  <code>IS_TRUE(NOT(null))</code> = <code>IS_TRUE(null)</code> = <code>false</code>.

  <p>This is why negate() != negateNullSafe() for these operators.</div>
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 <pre class="methodSignature">public&nbsp;<a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a>&nbsp;negateNullSafe()</pre>
 <div class="block">Returns the kind that you get if you negate this kind.
  To conform to null semantics, null value should not be compared.

  <p>For <a href="#IS_TRUE"><code>IS_TRUE</code></a>, <a href="#IS_FALSE"><code>IS_FALSE</code></a>, <a href="#IS_NOT_TRUE"><code>IS_NOT_TRUE</code></a> and
  <a href="#IS_NOT_FALSE"><code>IS_NOT_FALSE</code></a>, nullable inputs need to be treated carefully:

  <ul>
  <li>NOT(IS_TRUE(null)) = NOT(false) = true
  <li>IS_TRUE(NOT(null)) = IS_TRUE(null) = false
  <li>IS_FALSE(null) = false
  <li>IS_NOT_TRUE(null) = true
  </ul></div>
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 <pre class="methodSignature">public final&nbsp;boolean&nbsp;belongsTo&#8203;(<a href="https://docs.oracle.com/javase/9/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util" class="externalLink">Collection</a>&lt;<a href="SqlKind.html" title="enum in org.apache.calcite.sql">SqlKind</a>&gt;&nbsp;category)</pre>
 <div class="block">Returns whether this <code>SqlKind</code> belongs to a given category.

  <p>A category is a collection of kinds, not necessarily disjoint. For
  example, QUERY is { SELECT, UNION, INTERSECT, EXCEPT, VALUES, ORDER_BY,
  EXPLICIT_TABLE }.</div>
 <dl>
 <dt><span class="paramLabel">Parameters:</span></dt>
 <dd><code>category</code> - Category</dd>
 <dt><span class="returnLabel">Returns:</span></dt>
 <dd>Whether this kind belongs to the given category</dd>
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