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| <pre>public class <span class="typeNameLabel">EnumUtils</span> |
| extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></pre> |
| <div class="block">Utilities for generating programs in the Enumerable (functional) |
| style.</div> |
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| <th class="colLast" scope="col">Field and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/adapter/enumerable/EnumUtils.html#LEFT_RIGHT">LEFT_RIGHT</a></span></code> </td> |
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| <h3>Method Summary</h3> |
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| <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </span></span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Method and Description</th> |
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| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>static <a href="../../../../../org/apache/calcite/linq4j/tree/MethodCallExpression.html" title="class in org.apache.calcite.linq4j.tree">MethodCallExpression</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/adapter/enumerable/EnumUtils.html#call-java.lang.Class-java.lang.String-java.util.List-">call</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a> clazz, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> methodName, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><? extends <a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a>> arguments)</code> </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>static <a href="../../../../../org/apache/calcite/linq4j/tree/MethodCallExpression.html" title="class in org.apache.calcite.linq4j.tree">MethodCallExpression</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/adapter/enumerable/EnumUtils.html#call-java.lang.Class-java.lang.String-java.util.List-org.apache.calcite.linq4j.tree.Expression-">call</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a> clazz, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> methodName, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><? extends <a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a>> arguments, |
| <a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a> targetExpression)</code> |
| <div class="block">The powerful version of <code>org.apache.calcite.linq4j.tree.Expressions#call( |
| Type, String, Iterable<? extends Expression>)</code>.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>static <a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/adapter/enumerable/EnumUtils.html#convert-org.apache.calcite.linq4j.tree.Expression-java.lang.reflect.Type-">convert</a></span>(<a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a> operand, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/reflect/Type.html?is-external=true" title="class or interface in java.lang.reflect">Type</a> toType)</code> |
| <div class="block">Convert <code>operand</code> to target type <code>toType</code>.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>static <a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/adapter/enumerable/EnumUtils.html#convert-org.apache.calcite.linq4j.tree.Expression-java.lang.reflect.Type-java.lang.reflect.Type-">convert</a></span>(<a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a> operand, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/reflect/Type.html?is-external=true" title="class or interface in java.lang.reflect">Type</a> fromType, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/reflect/Type.html?is-external=true" title="class or interface in java.lang.reflect">Type</a> toType)</code> |
| <div class="block">Convert <code>operand</code> to target type <code>toType</code>.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>static <a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/adapter/enumerable/EnumUtils.html#generateCollatorExpression-org.apache.calcite.sql.SqlCollation-">generateCollatorExpression</a></span>(<a href="../../../../../org/apache/calcite/sql/SqlCollation.html" title="class in org.apache.calcite.sql">SqlCollation</a> collation)</code> </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>static <a href="../../../../../org/apache/calcite/linq4j/Enumerable.html" title="interface in org.apache.calcite.linq4j">Enumerable</a><<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>[]></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/adapter/enumerable/EnumUtils.html#hopping-org.apache.calcite.linq4j.Enumerator-int-long-long-long-">hopping</a></span>(<a href="../../../../../org/apache/calcite/linq4j/Enumerator.html" title="interface in org.apache.calcite.linq4j">Enumerator</a><<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>[]> inputEnumerator, |
| int indexOfWatermarkedColumn, |
| long emitFrequency, |
| long windowSize, |
| long offset)</code> |
| <div class="block">Create enumerable implementation that applies hopping on each element from the input |
| enumerator and produces at least one element for each input element.</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>static <a href="../../../../../org/apache/calcite/linq4j/tree/MethodDeclaration.html" title="class in org.apache.calcite.linq4j.tree">MethodDeclaration</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/adapter/enumerable/EnumUtils.html#overridingMethodDecl-java.lang.reflect.Method-java.lang.Iterable-org.apache.calcite.linq4j.tree.BlockStatement-">overridingMethodDecl</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/reflect/Method.html?is-external=true" title="class or interface in java.lang.reflect">Method</a> method, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true" title="class or interface in java.lang">Iterable</a><<a href="../../../../../org/apache/calcite/linq4j/tree/ParameterExpression.html" title="class in org.apache.calcite.linq4j.tree">ParameterExpression</a>> parameters, |
| <a href="../../../../../org/apache/calcite/linq4j/tree/BlockStatement.html" title="class in org.apache.calcite.linq4j.tree">BlockStatement</a> body)</code> |
| <div class="block">Declares a method that overrides another method.</div> |
| </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>static <a href="../../../../../org/apache/calcite/linq4j/Enumerable.html" title="interface in org.apache.calcite.linq4j">Enumerable</a><<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>[]></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/adapter/enumerable/EnumUtils.html#sessionize-org.apache.calcite.linq4j.Enumerator-int-int-long-">sessionize</a></span>(<a href="../../../../../org/apache/calcite/linq4j/Enumerator.html" title="interface in org.apache.calcite.linq4j">Enumerator</a><<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>[]> inputEnumerator, |
| int indexOfWatermarkedColumn, |
| int indexOfKeyColumn, |
| long gap)</code> |
| <div class="block">Creates enumerable implementation that applies sessionization to elements from the input |
| enumerator based on a specified key.</div> |
| </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code>static <TSource,TResult><br><a href="../../../../../org/apache/calcite/linq4j/Enumerable.html" title="interface in org.apache.calcite.linq4j">Enumerable</a><TResult></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/adapter/enumerable/EnumUtils.html#tumbling-org.apache.calcite.linq4j.Enumerable-org.apache.calcite.linq4j.function.Function1-">tumbling</a></span>(<a href="../../../../../org/apache/calcite/linq4j/Enumerable.html" title="interface in org.apache.calcite.linq4j">Enumerable</a><TSource> inputEnumerable, |
| <a href="../../../../../org/apache/calcite/linq4j/function/Function1.html" title="interface in org.apache.calcite.linq4j.function">Function1</a><TSource,TResult> outSelector)</code> |
| <div class="block">Apply tumbling per row from the enumerable input.</div> |
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| <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang">equals</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="class or interface in java.lang">hashCode</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#toString--" title="class or interface in java.lang">toString</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="class or interface in java.lang">wait</a></code></li> |
| </ul> |
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| <pre>public static final <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>> LEFT_RIGHT</pre> |
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| <h4>overridingMethodDecl</h4> |
| <pre>public static <a href="../../../../../org/apache/calcite/linq4j/tree/MethodDeclaration.html" title="class in org.apache.calcite.linq4j.tree">MethodDeclaration</a> overridingMethodDecl(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/reflect/Method.html?is-external=true" title="class or interface in java.lang.reflect">Method</a> method, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true" title="class or interface in java.lang">Iterable</a><<a href="../../../../../org/apache/calcite/linq4j/tree/ParameterExpression.html" title="class in org.apache.calcite.linq4j.tree">ParameterExpression</a>> parameters, |
| <a href="../../../../../org/apache/calcite/linq4j/tree/BlockStatement.html" title="class in org.apache.calcite.linq4j.tree">BlockStatement</a> body)</pre> |
| <div class="block">Declares a method that overrides another method.</div> |
| </li> |
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| <h4>convert</h4> |
| <pre>public static <a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a> convert(<a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a> operand, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/reflect/Type.html?is-external=true" title="class or interface in java.lang.reflect">Type</a> toType)</pre> |
| <div class="block">Convert <code>operand</code> to target type <code>toType</code>.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>operand</code> - The expression to convert</dd> |
| <dd><code>toType</code> - Target type</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>A new expression with type <code>toType</code> or original if there |
| is no need to convert</dd> |
| </dl> |
| </li> |
| </ul> |
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| <h4>convert</h4> |
| <pre>public static <a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a> convert(<a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a> operand, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/reflect/Type.html?is-external=true" title="class or interface in java.lang.reflect">Type</a> fromType, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/reflect/Type.html?is-external=true" title="class or interface in java.lang.reflect">Type</a> toType)</pre> |
| <div class="block">Convert <code>operand</code> to target type <code>toType</code>.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>operand</code> - The expression to convert</dd> |
| <dd><code>fromType</code> - Field type</dd> |
| <dd><code>toType</code> - Target type</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>A new expression with type <code>toType</code> or original if there |
| is no need to convert</dd> |
| </dl> |
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| <h4>call</h4> |
| <pre>public static <a href="../../../../../org/apache/calcite/linq4j/tree/MethodCallExpression.html" title="class in org.apache.calcite.linq4j.tree">MethodCallExpression</a> call(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a> clazz, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> methodName, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><? extends <a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a>> arguments)</pre> |
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| <h4>call</h4> |
| <pre>public static <a href="../../../../../org/apache/calcite/linq4j/tree/MethodCallExpression.html" title="class in org.apache.calcite.linq4j.tree">MethodCallExpression</a> call(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a> clazz, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> methodName, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><? extends <a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a>> arguments, |
| <a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a> targetExpression)</pre> |
| <div class="block">The powerful version of <code>org.apache.calcite.linq4j.tree.Expressions#call( |
| Type, String, Iterable<? extends Expression>)</code>. Try best effort to convert the |
| accepted arguments to match parameter type.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>clazz</code> - Class against which method is invoked</dd> |
| <dd><code>methodName</code> - Name of method</dd> |
| <dd><code>arguments</code> - argument expressions</dd> |
| <dd><code>targetExpression</code> - target expression</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>MethodCallExpression that call the given name method</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/RuntimeException.html?is-external=true" title="class or interface in java.lang">RuntimeException</a></code> - if no suitable method found</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="sessionize-org.apache.calcite.linq4j.Enumerator-int-int-long-"> |
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| <h4>sessionize</h4> |
| <pre>public static <a href="../../../../../org/apache/calcite/linq4j/Enumerable.html" title="interface in org.apache.calcite.linq4j">Enumerable</a><<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>[]> sessionize(<a href="../../../../../org/apache/calcite/linq4j/Enumerator.html" title="interface in org.apache.calcite.linq4j">Enumerator</a><<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>[]> inputEnumerator, |
| int indexOfWatermarkedColumn, |
| int indexOfKeyColumn, |
| long gap)</pre> |
| <div class="block">Creates enumerable implementation that applies sessionization to elements from the input |
| enumerator based on a specified key. Elements are windowed into sessions separated by |
| periods with no input for at least the duration specified by gap parameter.</div> |
| </li> |
| </ul> |
| <a name="hopping-org.apache.calcite.linq4j.Enumerator-int-long-long-long-"> |
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| <h4>hopping</h4> |
| <pre>public static <a href="../../../../../org/apache/calcite/linq4j/Enumerable.html" title="interface in org.apache.calcite.linq4j">Enumerable</a><<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>[]> hopping(<a href="../../../../../org/apache/calcite/linq4j/Enumerator.html" title="interface in org.apache.calcite.linq4j">Enumerator</a><<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>[]> inputEnumerator, |
| int indexOfWatermarkedColumn, |
| long emitFrequency, |
| long windowSize, |
| long offset)</pre> |
| <div class="block">Create enumerable implementation that applies hopping on each element from the input |
| enumerator and produces at least one element for each input element.</div> |
| </li> |
| </ul> |
| <a name="tumbling-org.apache.calcite.linq4j.Enumerable-org.apache.calcite.linq4j.function.Function1-"> |
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| <h4>tumbling</h4> |
| <pre>public static <TSource,TResult> <a href="../../../../../org/apache/calcite/linq4j/Enumerable.html" title="interface in org.apache.calcite.linq4j">Enumerable</a><TResult> tumbling(<a href="../../../../../org/apache/calcite/linq4j/Enumerable.html" title="interface in org.apache.calcite.linq4j">Enumerable</a><TSource> inputEnumerable, |
| <a href="../../../../../org/apache/calcite/linq4j/function/Function1.html" title="interface in org.apache.calcite.linq4j.function">Function1</a><TSource,TResult> outSelector)</pre> |
| <div class="block">Apply tumbling per row from the enumerable input.</div> |
| </li> |
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| <a name="generateCollatorExpression-org.apache.calcite.sql.SqlCollation-"> |
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| <h4>generateCollatorExpression</h4> |
| <pre>public static <a href="../../../../../org/apache/calcite/linq4j/tree/Expression.html" title="class in org.apache.calcite.linq4j.tree">Expression</a> generateCollatorExpression(<a href="../../../../../org/apache/calcite/sql/SqlCollation.html" title="class in org.apache.calcite.sql">SqlCollation</a> collation)</pre> |
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