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| <li>概要: </li> |
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| <div class="subTitle">org.apache.calcite.rel.core</div> |
| <h2 title="枚举 JoinRelType" class="title">枚举 JoinRelType</h2> |
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| <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><<a href="../../../../../org/apache/calcite/rel/core/JoinRelType.html" title="org.apache.calcite.rel.core中的枚举">JoinRelType</a>></li> |
| <li> |
| <ul class="inheritance"> |
| <li>org.apache.calcite.rel.core.JoinRelType</li> |
| </ul> |
| </li> |
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| <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><<a href="../../../../../org/apache/calcite/rel/core/JoinRelType.html" title="org.apache.calcite.rel.core中的枚举">JoinRelType</a>></dd> |
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| <br> |
| <pre>public enum <span class="typeNameLabel">JoinRelType</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><<a href="../../../../../org/apache/calcite/rel/core/JoinRelType.html" title="org.apache.calcite.rel.core中的枚举">JoinRelType</a>></pre> |
| <div class="block">Enumeration of join types.</div> |
| </li> |
| </ul> |
| </div> |
| <div class="summary"> |
| <ul class="blockList"> |
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| <!-- =========== ENUM CONSTANT SUMMARY =========== --> |
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| <li class="blockList"><a name="enum.constant.summary"> |
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| </a> |
| <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"> </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/rel/core/JoinRelType.html#ANTI">ANTI</a></span></code> |
| <div class="block">Anti-join (also known as Anti-semi-join).</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/core/JoinRelType.html#FULL">FULL</a></span></code> |
| <div class="block">Full-outer join.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/core/JoinRelType.html#INNER">INNER</a></span></code> |
| <div class="block">Inner join.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/core/JoinRelType.html#LEFT">LEFT</a></span></code> |
| <div class="block">Left-outer join.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/core/JoinRelType.html#RIGHT">RIGHT</a></span></code> |
| <div class="block">Right-outer join.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/core/JoinRelType.html#SEMI">SEMI</a></span></code> |
| <div class="block">Semi-join.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| <!-- =========== FIELD SUMMARY =========== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="field.summary"> |
| <!-- --> |
| </a> |
| <h3>字段概要</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="字段概要表, 列表字段和解释"> |
| <caption><span>字段</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">限定符和类型</th> |
| <th class="colLast" scope="col">字段和说明</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code><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></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/core/JoinRelType.html#lowerName">lowerName</a></span></code> |
| <div class="block">Lower-case name.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| <!-- ========== METHOD SUMMARY =========== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="method.summary"> |
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| </a> |
| <h3>方法概要</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="方法概要表, 列表方法和解释"> |
| <caption><span id="t0" class="activeTableTab"><span>所有方法</span><span class="tabEnd"> </span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">静态方法</a></span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">实例方法</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">具体方法</a></span><span class="tabEnd"> </span></span></caption> |
| <tr> |
| <th class="colFirst" scope="col">限定符和类型</th> |
| <th class="colLast" scope="col">方法和说明</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../../org/apache/calcite/rel/core/JoinRelType.html" title="org.apache.calcite.rel.core中的枚举">JoinRelType</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/core/JoinRelType.html#cancelNullsOnLeft--">cancelNullsOnLeft</a></span>()</code> |
| <div class="block">Returns a join type similar to this but that does not generate nulls on |
| the left.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../org/apache/calcite/rel/core/JoinRelType.html" title="org.apache.calcite.rel.core中的枚举">JoinRelType</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/core/JoinRelType.html#cancelNullsOnRight--">cancelNullsOnRight</a></span>()</code> |
| <div class="block">Returns a join type similar to this but that does not generate nulls on |
| the right.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/core/JoinRelType.html#generatesNullsOn-int-">generatesNullsOn</a></span>(int i)</code> |
| <div class="block">Returns whether this join type generates nulls on side #<code>i</code>.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/core/JoinRelType.html#generatesNullsOnLeft--">generatesNullsOnLeft</a></span>()</code> |
| <div class="block">Returns whether a join of this type may generate NULL values on the |
| left-hand side.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/core/JoinRelType.html#generatesNullsOnRight--">generatesNullsOnRight</a></span>()</code> |
| <div class="block">Returns whether a join of this type may generate NULL values on the |
| right-hand side.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/core/JoinRelType.html#isOuterJoin--">isOuterJoin</a></span>()</code> |
| <div class="block">Returns whether a join of this type is an outer join, returns true if the join type may |
| generate NULL values, either on the left-hand side or right-hand side.</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/core/JoinRelType.html#projectsRight--">projectsRight</a></span>()</code> </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../org/apache/calcite/rel/core/JoinRelType.html" title="org.apache.calcite.rel.core中的枚举">JoinRelType</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/core/JoinRelType.html#swap--">swap</a></span>()</code> |
| <div class="block">Swaps left to right, and vice versa.</div> |
| </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code>static <a href="../../../../../org/apache/calcite/rel/core/JoinRelType.html" title="org.apache.calcite.rel.core中的枚举">JoinRelType</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/core/JoinRelType.html#valueOf-java.lang.String-">valueOf</a></span>(<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> name)</code> |
| <div class="block">返回带有指定名称的该类型的枚举常量。</div> |
| </td> |
| </tr> |
| <tr id="i9" class="rowColor"> |
| <td class="colFirst"><code>static <a href="../../../../../org/apache/calcite/rel/core/JoinRelType.html" title="org.apache.calcite.rel.core中的枚举">JoinRelType</a>[]</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/core/JoinRelType.html#values--">values</a></span>()</code> |
| <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。</div> |
| </td> |
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| <h3>从类继承的方法 java.lang.<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></h3> |
| <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.html?is-external=true#clone--" title="java.lang中的类或接口">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.html?is-external=true#compareTo-E-" title="java.lang中的类或接口">compareTo</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.html?is-external=true#equals-java.lang.Object-" title="java.lang中的类或接口">equals</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.html?is-external=true#finalize--" title="java.lang中的类或接口">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.html?is-external=true#getDeclaringClass--" title="java.lang中的类或接口">getDeclaringClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.html?is-external=true#hashCode--" title="java.lang中的类或接口">hashCode</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.html?is-external=true#name--" title="java.lang中的类或接口">name</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.html?is-external=true#ordinal--" title="java.lang中的类或接口">ordinal</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.html?is-external=true#toString--" title="java.lang中的类或接口">toString</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Enum.html?is-external=true#valueOf-java.lang.Class-java.lang.String-" title="java.lang中的类或接口">valueOf</a></code></li> |
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| <h3>从类继承的方法 java.lang.<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="java.lang中的类或接口">Object</a></h3> |
| <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--" title="java.lang中的类或接口">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify--" title="java.lang中的类或接口">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="java.lang中的类或接口">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait--" title="java.lang中的类或接口">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="java.lang中的类或接口">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="java.lang中的类或接口">wait</a></code></li> |
| </ul> |
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| </div> |
| <div class="details"> |
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| <h4>INNER</h4> |
| <pre>public static final <a href="../../../../../org/apache/calcite/rel/core/JoinRelType.html" title="org.apache.calcite.rel.core中的枚举">JoinRelType</a> INNER</pre> |
| <div class="block">Inner join.</div> |
| </li> |
| </ul> |
| <a name="LEFT"> |
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| </a> |
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| <h4>LEFT</h4> |
| <pre>public static final <a href="../../../../../org/apache/calcite/rel/core/JoinRelType.html" title="org.apache.calcite.rel.core中的枚举">JoinRelType</a> LEFT</pre> |
| <div class="block">Left-outer join.</div> |
| </li> |
| </ul> |
| <a name="RIGHT"> |
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| </a> |
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| <h4>RIGHT</h4> |
| <pre>public static final <a href="../../../../../org/apache/calcite/rel/core/JoinRelType.html" title="org.apache.calcite.rel.core中的枚举">JoinRelType</a> RIGHT</pre> |
| <div class="block">Right-outer join.</div> |
| </li> |
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| <a name="FULL"> |
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| <h4>FULL</h4> |
| <pre>public static final <a href="../../../../../org/apache/calcite/rel/core/JoinRelType.html" title="org.apache.calcite.rel.core中的枚举">JoinRelType</a> FULL</pre> |
| <div class="block">Full-outer join.</div> |
| </li> |
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| </a> |
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| <h4>SEMI</h4> |
| <pre>public static final <a href="../../../../../org/apache/calcite/rel/core/JoinRelType.html" title="org.apache.calcite.rel.core中的枚举">JoinRelType</a> SEMI</pre> |
| <div class="block">Semi-join. |
| |
| <p>For example, <code>EMP semi-join DEPT</code> finds all <code>EMP</code> records |
| that have a corresponding <code>DEPT</code> record: |
| |
| <blockquote><pre> |
| SELECT * FROM EMP |
| WHERE EXISTS (SELECT 1 FROM DEPT |
| WHERE DEPT.DEPTNO = EMP.DEPTNO)</pre> |
| </blockquote></div> |
| </li> |
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| <h4>ANTI</h4> |
| <pre>public static final <a href="../../../../../org/apache/calcite/rel/core/JoinRelType.html" title="org.apache.calcite.rel.core中的枚举">JoinRelType</a> ANTI</pre> |
| <div class="block">Anti-join (also known as Anti-semi-join). |
| |
| <p>For example, <code>EMP anti-join DEPT</code> finds all <code>EMP</code> records |
| that do not have a corresponding <code>DEPT</code> record: |
| |
| <blockquote><pre> |
| SELECT * FROM EMP |
| WHERE NOT EXISTS (SELECT 1 FROM DEPT |
| WHERE DEPT.DEPTNO = EMP.DEPTNO)</pre> |
| </blockquote></div> |
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| <h3>字段详细资料</h3> |
| <a name="lowerName"> |
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| <h4>lowerName</h4> |
| <pre>public final <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> lowerName</pre> |
| <div class="block">Lower-case name.</div> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| <!-- ============ METHOD DETAIL ========== --> |
| <ul class="blockList"> |
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| <h3>方法详细资料</h3> |
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| <h4>values</h4> |
| <pre>public static <a href="../../../../../org/apache/calcite/rel/core/JoinRelType.html" title="org.apache.calcite.rel.core中的枚举">JoinRelType</a>[] 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 (JoinRelType c : JoinRelType.values()) |
| 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> |
| </dl> |
| </li> |
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| <h4>valueOf</h4> |
| <pre>public static <a href="../../../../../org/apache/calcite/rel/core/JoinRelType.html" title="org.apache.calcite.rel.core中的枚举">JoinRelType</a> 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> 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> |
| </dl> |
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| <h4>generatesNullsOnRight</h4> |
| <pre>public boolean generatesNullsOnRight()</pre> |
| <div class="block">Returns whether a join of this type may generate NULL values on the |
| right-hand side.</div> |
| </li> |
| </ul> |
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| <h4>generatesNullsOnLeft</h4> |
| <pre>public boolean generatesNullsOnLeft()</pre> |
| <div class="block">Returns whether a join of this type may generate NULL values on the |
| left-hand side.</div> |
| </li> |
| </ul> |
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| <h4>isOuterJoin</h4> |
| <pre>public boolean isOuterJoin()</pre> |
| <div class="block">Returns whether a join of this type is an outer join, returns true if the join type may |
| generate NULL values, either on the left-hand side or right-hand side.</div> |
| </li> |
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| <h4>swap</h4> |
| <pre>public <a href="../../../../../org/apache/calcite/rel/core/JoinRelType.html" title="org.apache.calcite.rel.core中的枚举">JoinRelType</a> swap()</pre> |
| <div class="block">Swaps left to right, and vice versa.</div> |
| </li> |
| </ul> |
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| <h4>generatesNullsOn</h4> |
| <pre>public boolean generatesNullsOn(int i)</pre> |
| <div class="block">Returns whether this join type generates nulls on side #<code>i</code>.</div> |
| </li> |
| </ul> |
| <a name="cancelNullsOnLeft--"> |
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| </a> |
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| <h4>cancelNullsOnLeft</h4> |
| <pre>public <a href="../../../../../org/apache/calcite/rel/core/JoinRelType.html" title="org.apache.calcite.rel.core中的枚举">JoinRelType</a> cancelNullsOnLeft()</pre> |
| <div class="block">Returns a join type similar to this but that does not generate nulls on |
| the left.</div> |
| </li> |
| </ul> |
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| </a> |
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| <h4>cancelNullsOnRight</h4> |
| <pre>public <a href="../../../../../org/apache/calcite/rel/core/JoinRelType.html" title="org.apache.calcite.rel.core中的枚举">JoinRelType</a> cancelNullsOnRight()</pre> |
| <div class="block">Returns a join type similar to this but that does not generate nulls on |
| the right.</div> |
| </li> |
| </ul> |
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| </a> |
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| <h4>projectsRight</h4> |
| <pre>public boolean projectsRight()</pre> |
| </li> |
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| <li>概要: </li> |
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