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 <div class="subTitle">org.apache.calcite.linq4j.tree</div>
 <h2 title="枚举 ExpressionType" class="title">枚举 ExpressionType</h2>
 </div>
 <div class="contentContainer">
 <ul class="inheritance">
 <li><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="java.lang中的类或接口">java.lang.Object</a></li>
 <li>
 <ul class="inheritance">
 <li><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.html?is-external=true" title="java.lang中的类或接口">java.lang.Enum</a>&lt;<a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html" title="org.apache.calcite.linq4j.tree中的枚举">ExpressionType</a>&gt;</li>
 <li>
 <ul class="inheritance">
 <li>org.apache.calcite.linq4j.tree.ExpressionType</li>
 </ul>
 </li>
 </ul>
 </li>
 </ul>
 <div class="description">
 <ul class="blockList">
 <li class="blockList">
 <dl>
 <dt>所有已实现的接口:</dt>
 <dd><a href="https://docs.oracle.com/javase/8/docs/api/java/io/Serializable.html?is-external=true" title="java.io中的类或接口">Serializable</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Comparable.html?is-external=true" title="java.lang中的类或接口">Comparable</a>&lt;<a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html" title="org.apache.calcite.linq4j.tree中的枚举">ExpressionType</a>&gt;</dd>
 </dl>
 <hr>
 <br>
 <pre>public enum <span class="typeNameLabel">ExpressionType</span>
 extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.html?is-external=true" title="java.lang中的类或接口">Enum</a>&lt;<a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html" title="org.apache.calcite.linq4j.tree中的枚举">ExpressionType</a>&gt;</pre>
 <div class="block"><p>Analogous to LINQ's System.Linq.Expressions.ExpressionType.</p></div>
 </li>
 </ul>
 </div>
 <div class="summary">
 <ul class="blockList">
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 <!-- =========== ENUM CONSTANT SUMMARY =========== -->
 <ul class="blockList">
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 <h3>枚举常量概要</h3>
 <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="枚举常量概要表, 列表枚举常量和解释">
 <caption><span>枚举常量</span><span class="tabEnd">&nbsp;</span></caption>
 <tr>
 <th class="colOne" scope="col">枚举常量和说明</th>
 </tr>
 <tr class="altColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#Add">Add</a></span></code>
 <div class="block">An addition operation, such as a + b, without overflow
  checking, for numeric operands.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#AddAssign">AddAssign</a></span></code>
 <div class="block">An addition compound assignment operation, such as (a +=
  b), without overflow checking, for numeric operands.</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#AddAssignChecked">AddAssignChecked</a></span></code>
 <div class="block">An addition compound assignment operation, such as (a +=
  b), with overflow checking, for numeric operands.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#AddChecked">AddChecked</a></span></code>
 <div class="block">An addition operation, such as (a + b), with overflow
  checking, for numeric operands.</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#And">And</a></span></code>
 <div class="block">A bitwise or logical AND operation, such as <code>a &amp;amp; b</code> in Java.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#AndAlso">AndAlso</a></span></code>
 <div class="block">A conditional AND operation that evaluates the second operand
  only if the first operand evaluates to true.</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#AndAssign">AndAssign</a></span></code>
 <div class="block">A bitwise or logical AND compound assignment operation,
  such as (a &amp;= b) in C#.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#ArrayIndex">ArrayIndex</a></span></code>
 <div class="block">An indexing operation in a one-dimensional array, such as
  <code>array[index]</code> in Java.</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#ArrayLength">ArrayLength</a></span></code>
 <div class="block">An operation that obtains the length of a one-dimensional
  array, such as array.Length.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#Assign">Assign</a></span></code>
 <div class="block">An assignment operation, such as (a = b).</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#Block">Block</a></span></code>
 <div class="block">A block of expressions.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#Call">Call</a></span></code>
 <div class="block">A method call, such as in the <code>obj.sampleMethod()</code>
  expression.</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#Coalesce">Coalesce</a></span></code>
 <div class="block">A node that represents a null coalescing operation, such
  as (a ??</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#Conditional">Conditional</a></span></code>
 <div class="block">A conditional operation, such as {@code a > b ?</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#Constant">Constant</a></span></code>
 <div class="block">A constant value.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#Convert">Convert</a></span></code>
 <div class="block">A cast or conversion operation, such as <code>(SampleType) obj</code> in
  Java.</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#ConvertChecked">ConvertChecked</a></span></code>
 <div class="block">A cast or conversion operation, such as <code>(SampleType) obj</code> in
  Java.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#DebugInfo">DebugInfo</a></span></code>
 <div class="block">Debugging information.</div>
 </td>
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 <tr class="altColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#Declaration">Declaration</a></span></code>
 <div class="block">Declaration of a variable.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#Decrement">Decrement</a></span></code>
 <div class="block">A unary decrement operation, such as (a - 1) in C# and
  Visual Basic.</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#Default">Default</a></span></code>
 <div class="block">A default value.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#Divide">Divide</a></span></code>
 <div class="block">A division operation, such as (a / b), for numeric
  operands.</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#DivideAssign">DivideAssign</a></span></code>
 <div class="block">An division compound assignment operation, such as (a /=
  b), for numeric operands.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#Dynamic">Dynamic</a></span></code>
 <div class="block">A dynamic operation.</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#Equal">Equal</a></span></code>
 <div class="block">A node that represents an equality comparison, such as <code>a == b</code> in
  Java.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#ExclusiveOr">ExclusiveOr</a></span></code>
 <div class="block">A bitwise or logical XOR operation, such as <code>a ^ b</code> in Java.</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#ExclusiveOrAssign">ExclusiveOrAssign</a></span></code>
 <div class="block">A bitwise or logical XOR compound assignment operation,
  such as (a ^= b) in C#.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#Extension">Extension</a></span></code>
 <div class="block">An extension expression.</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#For">For</a></span></code>
 <div class="block">For loop.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#ForEach">ForEach</a></span></code>
 <div class="block">For-each loop, "for (Type i : expression) body".</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#Goto">Goto</a></span></code>
 <div class="block">A "go to" expression, such as goto Label in C# or GoTo
  Label in Visual Basic.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#GreaterThan">GreaterThan</a></span></code>
 <div class="block">A "greater than" comparison, such as (a &gt; b).</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#GreaterThanOrEqual">GreaterThanOrEqual</a></span></code>
 <div class="block">A "greater than or equal to" comparison, such as (a &gt;=
  b).</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#Increment">Increment</a></span></code>
 <div class="block">A unary increment operation, such as (a + 1) in C# and
  Visual Basic.</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#Index">Index</a></span></code>
 <div class="block">An index operation or an operation that accesses a
  property that takes arguments.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#Invoke">Invoke</a></span></code>
 <div class="block">An operation that invokes a delegate or lambda expression,
  such as sampleDelegate.Invoke().</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#IsFalse">IsFalse</a></span></code>
 <div class="block">A false condition value.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#IsTrue">IsTrue</a></span></code>
 <div class="block">A true condition value.</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#Label">Label</a></span></code>
 <div class="block">A label.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#Lambda">Lambda</a></span></code>
 <div class="block">A lambda expression, such as <code>a -&amp;gt; a + a</code> in Java.</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#LeftShift">LeftShift</a></span></code>
 <div class="block">A bitwise left-shift operation, such as <code>a &lt;&lt; b</code> in Java.</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#LeftShiftAssign">LeftShiftAssign</a></span></code>
 <div class="block">A bitwise left-shift compound assignment, such as (a &lt;&lt;=
  b).</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#LessThan">LessThan</a></span></code>
 <div class="block">A "less than" comparison, such as (a &lt; b).</div>
 </td>
 </tr>
 <tr class="rowColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#LessThanOrEqual">LessThanOrEqual</a></span></code>
 <div class="block">A "less than or equal to" comparison, such as (a &lt;= b).</div>
 </td>
 </tr>
 <tr class="altColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#ListInit">ListInit</a></span></code>
 <div class="block">An operation that creates a new IEnumerable object and
  initializes it from a list of elements, such as new
  List&lt;SampleType&gt;(){ a, b, c } in C# or Dim sampleList = {
  a, b, c } in Visual Basic.</div>
 </td>
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 <tr class="rowColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#Loop">Loop</a></span></code>
 <div class="block">A loop, such as for or while.</div>
 </td>
 </tr>
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 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#MemberAccess">MemberAccess</a></span></code>
 <div class="block">An operation that reads from a field or property, such as
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 <tr class="rowColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#MemberInit">MemberInit</a></span></code>
 <div class="block">An operation that creates a new object and initializes one
  or more of its members, such as new Point { X = 1, Y = 2 }
  in C# or New Point With {.X = 1, .Y = 2} in Visual
  Basic.</div>
 </td>
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 <tr class="altColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#Mod">Mod</a></span></code>
 <div class="block">A percent remainder operation, such as (a % b), for numeric
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 </td>
 </tr>
 <tr class="rowColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#Modulo">Modulo</a></span></code>
 <div class="block">An arithmetic remainder operation, such as (a % b) in C#
  or (a Mod b) in Visual Basic.</div>
 </td>
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 <tr class="altColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#ModuloAssign">ModuloAssign</a></span></code>
 <div class="block">An arithmetic remainder compound assignment operation,
  such as (a %= b) in C#.</div>
 </td>
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 <tr class="rowColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#Multiply">Multiply</a></span></code>
 <div class="block">A multiplication operation, such as (a * b), without
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 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#MultiplyAssign">MultiplyAssign</a></span></code>
 <div class="block">A multiplication compound assignment operation, such as (a
  *= b), without overflow checking, for numeric operands.</div>
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 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#MultiplyAssignChecked">MultiplyAssignChecked</a></span></code>
 <div class="block">A multiplication compound assignment operation, such as (a
  *= b), that has overflow checking, for numeric operands.</div>
 </td>
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 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#MultiplyChecked">MultiplyChecked</a></span></code>
 <div class="block">An multiplication operation, such as (a * b), that has
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 </td>
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 <tr class="rowColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#Negate">Negate</a></span></code>
 <div class="block">An arithmetic negation operation, such as (-a).</div>
 </td>
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 <tr class="altColor">
 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#NegateChecked">NegateChecked</a></span></code>
 <div class="block">An arithmetic negation operation, such as (-a), that has
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 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#New">New</a></span></code>
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 <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html#PreDecrementAssign">PreDecrementAssign</a></span></code>
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 <div class="block">An operation that creates a new object and initializes one
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 <div class="block">An arithmetic negation operation, such as (-a). The object
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 <div class="block">A unary plus operation, such as (+a). The result of a
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 <div class="block">An arithmetic negation operation, such as (-a), that has
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 <div class="block">An operation that creates a new one-dimensional array and
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 <div class="block">An operation that creates a new array, in which the bounds
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 <div class="block">A bitwise complement or logical negation operation. In C#,
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  Boolean values. In Visual Basic, it is equivalent to (Not
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 <div class="block">A bitwise or logical OR operation, such as (a | b) in C#
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 <div class="block">A short-circuiting conditional OR operation, such as (a ||
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 <div class="block">A mathematical operation that raises a number to a power,
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 <div class="block">An expression that has a constant value of type
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 <div class="block">An explicit reference or boxing conversion in which null
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 <div class="block">A unary decrement operation, such as (a - 1) in C# and
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 <div class="block">A "go to" expression, such as goto Label in C# or GoTo
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 <div class="block">A unary increment operation, such as (a + 1) in C# and
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 <div class="block">An index operation or an operation that accesses a
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 <div class="block">An unbox value type operation, such as unbox and unbox.any
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 <div class="block">An addition compound assignment operation, such as (a +=
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 <div class="block">An division compound assignment operation, such as (a /=
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 <div class="block">A bitwise left-shift compound assignment, such as (a &lt;&lt;=
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 <pre>public static final&nbsp;<a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html" title="org.apache.calcite.linq4j.tree中的枚举">ExpressionType</a> ModuloAssign</pre>
 <div class="block">An arithmetic remainder compound assignment operation,
  such as (a %= b) in C#.</div>
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 <pre>public static final&nbsp;<a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html" title="org.apache.calcite.linq4j.tree中的枚举">ExpressionType</a> MultiplyAssign</pre>
 <div class="block">A multiplication compound assignment operation, such as (a
  *= b), without overflow checking, for numeric operands.</div>
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 <pre>public static final&nbsp;<a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html" title="org.apache.calcite.linq4j.tree中的枚举">ExpressionType</a> OrAssign</pre>
 <div class="block">A bitwise or logical OR compound assignment, such as (a |=
  b) in C#.</div>
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 <pre>public static final&nbsp;<a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html" title="org.apache.calcite.linq4j.tree中的枚举">ExpressionType</a> PowerAssign</pre>
 <div class="block">A compound assignment operation that raises a number to a
  power, such as (a ^= b) in Visual Basic.</div>
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 <pre>public static final&nbsp;<a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html" title="org.apache.calcite.linq4j.tree中的枚举">ExpressionType</a> RightShiftAssign</pre>
 <div class="block">A bitwise right-shift compound assignment operation, such
  as (a &gt;&gt;= b).</div>
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 <pre>public static final&nbsp;<a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html" title="org.apache.calcite.linq4j.tree中的枚举">ExpressionType</a> SubtractAssign</pre>
 <div class="block">A subtraction compound assignment operation, such as (a -=
  b), without overflow checking, for numeric operands.</div>
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 <pre>public static final&nbsp;<a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html" title="org.apache.calcite.linq4j.tree中的枚举">ExpressionType</a> AddAssignChecked</pre>
 <div class="block">An addition compound assignment operation, such as (a +=
  b), with overflow checking, for numeric operands.</div>
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 <pre>public static final&nbsp;<a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html" title="org.apache.calcite.linq4j.tree中的枚举">ExpressionType</a> MultiplyAssignChecked</pre>
 <div class="block">A multiplication compound assignment operation, such as (a
  *= b), that has overflow checking, for numeric operands.</div>
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 <pre>public static final&nbsp;<a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html" title="org.apache.calcite.linq4j.tree中的枚举">ExpressionType</a> SubtractAssignChecked</pre>
 <div class="block">A subtraction compound assignment operation, such as (a -=
  b), that has overflow checking, for numeric operands.</div>
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 <pre>public static final&nbsp;<a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html" title="org.apache.calcite.linq4j.tree中的枚举">ExpressionType</a> PreIncrementAssign</pre>
 <div class="block">A unary prefix increment, such as (++a). The object a
  should be modified in place.</div>
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 <pre>public static final&nbsp;<a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html" title="org.apache.calcite.linq4j.tree中的枚举">ExpressionType</a> PreDecrementAssign</pre>
 <div class="block">A unary prefix decrement, such as (--a). The object a
  should be modified in place.</div>
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 <pre>public static final&nbsp;<a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html" title="org.apache.calcite.linq4j.tree中的枚举">ExpressionType</a> PostIncrementAssign</pre>
 <div class="block">A unary postfix increment, such as (a++). The object a
  should be modified in place.</div>
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 <pre>public static final&nbsp;<a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html" title="org.apache.calcite.linq4j.tree中的枚举">ExpressionType</a> PostDecrementAssign</pre>
 <div class="block">A unary postfix decrement, such as (a--). The object a
  should be modified in place.</div>
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 <pre>public static final&nbsp;<a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html" title="org.apache.calcite.linq4j.tree中的枚举">ExpressionType</a> TypeEqual</pre>
 <div class="block">An exact type test.</div>
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 <pre>public static final&nbsp;<a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html" title="org.apache.calcite.linq4j.tree中的枚举">ExpressionType</a> OnesComplement</pre>
 <div class="block">A ones complement operation, such as (~a) in C#.</div>
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 <pre>public static final&nbsp;<a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html" title="org.apache.calcite.linq4j.tree中的枚举">ExpressionType</a> IsTrue</pre>
 <div class="block">A true condition value.</div>
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 <pre>public static final&nbsp;<a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html" title="org.apache.calcite.linq4j.tree中的枚举">ExpressionType</a> IsFalse</pre>
 <div class="block">A false condition value.</div>
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 <pre>public static final&nbsp;<a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html" title="org.apache.calcite.linq4j.tree中的枚举">ExpressionType</a> Declaration</pre>
 <div class="block">Declaration of a variable.</div>
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 <pre>public static final&nbsp;<a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html" title="org.apache.calcite.linq4j.tree中的枚举">ExpressionType</a> For</pre>
 <div class="block">For loop.</div>
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 <pre>public static final&nbsp;<a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html" title="org.apache.calcite.linq4j.tree中的枚举">ExpressionType</a> ForEach</pre>
 <div class="block">For-each loop, "for (Type i : expression) body".</div>
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 <pre>public static final&nbsp;<a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html" title="org.apache.calcite.linq4j.tree中的枚举">ExpressionType</a> While</pre>
 <div class="block">While loop.</div>
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 <pre>public static&nbsp;<a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html" title="org.apache.calcite.linq4j.tree中的枚举">ExpressionType</a>[]&nbsp;values()</pre>
 <div class="block">按照声明该枚举类型的常量的顺序, 返回
 包含这些常量的数组。该方法可用于迭代
 常量, 如下所示:
 <pre>
 for (ExpressionType c : ExpressionType.values())
 &nbsp;   System.out.println(c);
 </pre></div>
 <dl>
 <dt><span class="returnLabel">返回:</span></dt>
 <dd>按照声明该枚举类型的常量的顺序返回的包含这些常量的数组</dd>
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 <pre>public static&nbsp;<a href="../../../../../org/apache/calcite/linq4j/tree/ExpressionType.html" title="org.apache.calcite.linq4j.tree中的枚举">ExpressionType</a>&nbsp;valueOf(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="java.lang中的类或接口">String</a>&nbsp;name)</pre>
 <div class="block">返回带有指定名称的该类型的枚举常量。
 字符串必须与用于声明该类型的枚举常量的
 标识符<i>完全</i>匹配。(不允许有多余
 的空格字符。)</div>
 <dl>
 <dt><span class="paramLabel">参数:</span></dt>
 <dd><code>name</code> - 要返回的枚举常量的名称。</dd>
 <dt><span class="returnLabel">返回:</span></dt>
 <dd>返回带有指定名称的枚举常量</dd>
 <dt><span class="throwsLabel">抛出:</span></dt>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/IllegalArgumentException.html?is-external=true" title="java.lang中的类或接口">IllegalArgumentException</a></code> - 如果该枚举类型没有带有指定名称的常量</dd>
 <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/NullPointerException.html?is-external=true" title="java.lang中的类或接口">NullPointerException</a></code> - 如果参数为空值</dd>
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