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| <div class="subTitle">org.apache.calcite.rel.metadata</div> |
| <h2 title="类 RelMdPredicates" class="title">类 RelMdPredicates</h2> |
| </div> |
| <div class="contentContainer"> |
| <ul class="inheritance"> |
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| <li> |
| <ul class="inheritance"> |
| <li>org.apache.calcite.rel.metadata.RelMdPredicates</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="../../../../../org/apache/calcite/rel/metadata/MetadataHandler.html" title="org.apache.calcite.rel.metadata中的接口">MetadataHandler</a><<a href="../../../../../org/apache/calcite/rel/metadata/BuiltInMetadata.Predicates.html" title="org.apache.calcite.rel.metadata中的接口">BuiltInMetadata.Predicates</a>></dd> |
| </dl> |
| <hr> |
| <br> |
| <pre>public class <span class="typeNameLabel">RelMdPredicates</span> |
| extends <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> |
| implements <a href="../../../../../org/apache/calcite/rel/metadata/MetadataHandler.html" title="org.apache.calcite.rel.metadata中的接口">MetadataHandler</a><<a href="../../../../../org/apache/calcite/rel/metadata/BuiltInMetadata.Predicates.html" title="org.apache.calcite.rel.metadata中的接口">BuiltInMetadata.Predicates</a>></pre> |
| <div class="block">Utility to infer Predicates that are applicable above a RelNode. |
| |
| <p>This is currently used by |
| <a href="../../../../../org/apache/calcite/rel/rules/JoinPushTransitivePredicatesRule.html" title="org.apache.calcite.rel.rules中的类"><code>JoinPushTransitivePredicatesRule</code></a> to |
| infer <em>Predicates</em> that can be inferred from one side of a Join |
| to the other. |
| |
| <p>The PullUp Strategy is sound but not complete. Here are some of the |
| limitations: |
| <ol> |
| |
| <li> For Aggregations we only PullUp predicates that only contain |
| Grouping Keys. This can be extended to infer predicates on Aggregation |
| expressions from expressions on the aggregated columns. For e.g. |
| <pre> |
| select a, max(b) from R1 where b > 7 |
| → max(b) > 7 or max(b) is null |
| </pre> |
| |
| <li> For Projections we only look at columns that are projected without |
| any function applied. So: |
| <pre> |
| select a from R1 where a > 7 |
| → "a > 7" is pulled up from the Projection. |
| select a + 1 from R1 where a + 1 > 7 |
| → "a + 1 gt; 7" is not pulled up |
| </pre> |
| |
| <li> There are several restrictions on Joins: |
| <ul> |
| <li> We only pullUp inferred predicates for now. Pulling up existing |
| predicates causes an explosion of duplicates. The existing predicates |
| are pushed back down as new predicates. Once we have rules to eliminate |
| duplicate Filter conditions, we should pullUp all predicates. |
| |
| <li> For Left Outer: we infer new predicates from the left and set them |
| as applicable on the Right side. No predicates are pulledUp. |
| |
| <li> Right Outer Joins are handled in an analogous manner. |
| |
| <li> For Full Outer Joins no predicates are pulledUp or inferred. |
| </ul> |
| </ol></div> |
| </li> |
| </ul> |
| </div> |
| <div class="summary"> |
| <ul class="blockList"> |
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| <!-- =========== FIELD SUMMARY =========== --> |
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| <h3>字段概要</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="字段概要表, 列表字段和解释"> |
| <caption><span>字段</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">限定符和类型</th> |
| <th class="colLast" scope="col">字段和说明</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static <a href="../../../../../org/apache/calcite/rel/metadata/RelMetadataProvider.html" title="org.apache.calcite.rel.metadata中的接口">RelMetadataProvider</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/metadata/RelMdPredicates.html#SOURCE">SOURCE</a></span></code> </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| <!-- ======== CONSTRUCTOR SUMMARY ======== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="constructor.summary"> |
| <!-- --> |
| </a> |
| <h3>构造器概要</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="构造器概要表, 列表构造器和解释"> |
| <caption><span>构造器</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colOne" scope="col">构造器和说明</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/metadata/RelMdPredicates.html#RelMdPredicates--">RelMdPredicates</a></span>()</code> </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| <!-- ========== METHOD SUMMARY =========== --> |
| <ul class="blockList"> |
| <li class="blockList"><a name="method.summary"> |
| <!-- --> |
| </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="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/metadata/MetadataDef.html" title="org.apache.calcite.rel.metadata中的类">MetadataDef</a><<a href="../../../../../org/apache/calcite/rel/metadata/BuiltInMetadata.Predicates.html" title="org.apache.calcite.rel.metadata中的接口">BuiltInMetadata.Predicates</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/metadata/RelMdPredicates.html#getDef--">getDef</a></span>()</code> </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../org/apache/calcite/plan/RelOptPredicateList.html" title="org.apache.calcite.plan中的类">RelOptPredicateList</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/metadata/RelMdPredicates.html#getPredicates-org.apache.calcite.rel.core.Aggregate-org.apache.calcite.rel.metadata.RelMetadataQuery-">getPredicates</a></span>(<a href="../../../../../org/apache/calcite/rel/core/Aggregate.html" title="org.apache.calcite.rel.core中的类">Aggregate</a> agg, |
| <a href="../../../../../org/apache/calcite/rel/metadata/RelMetadataQuery.html" title="org.apache.calcite.rel.metadata中的类">RelMetadataQuery</a> mq)</code> |
| <div class="block">Infers predicates for an Aggregate.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../../org/apache/calcite/plan/RelOptPredicateList.html" title="org.apache.calcite.plan中的类">RelOptPredicateList</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/metadata/RelMdPredicates.html#getPredicates-org.apache.calcite.rel.core.Exchange-org.apache.calcite.rel.metadata.RelMetadataQuery-">getPredicates</a></span>(<a href="../../../../../org/apache/calcite/rel/core/Exchange.html" title="org.apache.calcite.rel.core中的类">Exchange</a> exchange, |
| <a href="../../../../../org/apache/calcite/rel/metadata/RelMetadataQuery.html" title="org.apache.calcite.rel.metadata中的类">RelMetadataQuery</a> mq)</code> |
| <div class="block">Infers predicates for an Exchange.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../org/apache/calcite/plan/RelOptPredicateList.html" title="org.apache.calcite.plan中的类">RelOptPredicateList</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/metadata/RelMdPredicates.html#getPredicates-org.apache.calcite.rel.core.Filter-org.apache.calcite.rel.metadata.RelMetadataQuery-">getPredicates</a></span>(<a href="../../../../../org/apache/calcite/rel/core/Filter.html" title="org.apache.calcite.rel.core中的类">Filter</a> filter, |
| <a href="../../../../../org/apache/calcite/rel/metadata/RelMetadataQuery.html" title="org.apache.calcite.rel.metadata中的类">RelMetadataQuery</a> mq)</code> |
| <div class="block">Add the Filter condition to the pulledPredicates list from the input.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../../org/apache/calcite/plan/RelOptPredicateList.html" title="org.apache.calcite.plan中的类">RelOptPredicateList</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/metadata/RelMdPredicates.html#getPredicates-org.apache.calcite.plan.hep.HepRelVertex-org.apache.calcite.rel.metadata.RelMetadataQuery-">getPredicates</a></span>(<a href="../../../../../org/apache/calcite/plan/hep/HepRelVertex.html" title="org.apache.calcite.plan.hep中的类">HepRelVertex</a> rel, |
| <a href="../../../../../org/apache/calcite/rel/metadata/RelMetadataQuery.html" title="org.apache.calcite.rel.metadata中的类">RelMetadataQuery</a> mq)</code> </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../org/apache/calcite/plan/RelOptPredicateList.html" title="org.apache.calcite.plan中的类">RelOptPredicateList</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/metadata/RelMdPredicates.html#getPredicates-org.apache.calcite.rel.core.Intersect-org.apache.calcite.rel.metadata.RelMetadataQuery-">getPredicates</a></span>(<a href="../../../../../org/apache/calcite/rel/core/Intersect.html" title="org.apache.calcite.rel.core中的类">Intersect</a> intersect, |
| <a href="../../../../../org/apache/calcite/rel/metadata/RelMetadataQuery.html" title="org.apache.calcite.rel.metadata中的类">RelMetadataQuery</a> mq)</code> |
| <div class="block">Infers predicates for a Intersect.</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../../org/apache/calcite/plan/RelOptPredicateList.html" title="org.apache.calcite.plan中的类">RelOptPredicateList</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/metadata/RelMdPredicates.html#getPredicates-org.apache.calcite.rel.core.Join-org.apache.calcite.rel.metadata.RelMetadataQuery-">getPredicates</a></span>(<a href="../../../../../org/apache/calcite/rel/core/Join.html" title="org.apache.calcite.rel.core中的类">Join</a> join, |
| <a href="../../../../../org/apache/calcite/rel/metadata/RelMetadataQuery.html" title="org.apache.calcite.rel.metadata中的类">RelMetadataQuery</a> mq)</code> |
| <div class="block">Infers predicates for a <a href="../../../../../org/apache/calcite/rel/core/Join.html" title="org.apache.calcite.rel.core中的类"><code>Join</code></a> (including |
| <code>SemiJoin</code>).</div> |
| </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../org/apache/calcite/plan/RelOptPredicateList.html" title="org.apache.calcite.plan中的类">RelOptPredicateList</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/metadata/RelMdPredicates.html#getPredicates-org.apache.calcite.rel.core.Minus-org.apache.calcite.rel.metadata.RelMetadataQuery-">getPredicates</a></span>(<a href="../../../../../org/apache/calcite/rel/core/Minus.html" title="org.apache.calcite.rel.core中的类">Minus</a> minus, |
| <a href="../../../../../org/apache/calcite/rel/metadata/RelMetadataQuery.html" title="org.apache.calcite.rel.metadata中的类">RelMetadataQuery</a> mq)</code> |
| <div class="block">Infers predicates for a Minus.</div> |
| </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../../org/apache/calcite/plan/RelOptPredicateList.html" title="org.apache.calcite.plan中的类">RelOptPredicateList</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/metadata/RelMdPredicates.html#getPredicates-org.apache.calcite.rel.core.Project-org.apache.calcite.rel.metadata.RelMetadataQuery-">getPredicates</a></span>(<a href="../../../../../org/apache/calcite/rel/core/Project.html" title="org.apache.calcite.rel.core中的类">Project</a> project, |
| <a href="../../../../../org/apache/calcite/rel/metadata/RelMetadataQuery.html" title="org.apache.calcite.rel.metadata中的类">RelMetadataQuery</a> mq)</code> |
| <div class="block">Infers predicates for a project.</div> |
| </td> |
| </tr> |
| <tr id="i9" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../org/apache/calcite/plan/RelOptPredicateList.html" title="org.apache.calcite.plan中的类">RelOptPredicateList</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/metadata/RelMdPredicates.html#getPredicates-org.apache.calcite.rel.RelNode-org.apache.calcite.rel.metadata.RelMetadataQuery-">getPredicates</a></span>(<a href="../../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a> rel, |
| <a href="../../../../../org/apache/calcite/rel/metadata/RelMetadataQuery.html" title="org.apache.calcite.rel.metadata中的类">RelMetadataQuery</a> mq)</code> |
| <div class="block">Catch-all implementation for |
| <a href="../../../../../org/apache/calcite/rel/metadata/BuiltInMetadata.Predicates.html#getPredicates--"><code>BuiltInMetadata.Predicates.getPredicates()</code></a>, |
| invoked using reflection.</div> |
| </td> |
| </tr> |
| <tr id="i10" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../../org/apache/calcite/plan/RelOptPredicateList.html" title="org.apache.calcite.plan中的类">RelOptPredicateList</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/metadata/RelMdPredicates.html#getPredicates-org.apache.calcite.plan.volcano.RelSubset-org.apache.calcite.rel.metadata.RelMetadataQuery-">getPredicates</a></span>(<a href="../../../../../org/apache/calcite/plan/volcano/RelSubset.html" title="org.apache.calcite.plan.volcano中的类">RelSubset</a> r, |
| <a href="../../../../../org/apache/calcite/rel/metadata/RelMetadataQuery.html" title="org.apache.calcite.rel.metadata中的类">RelMetadataQuery</a> mq)</code> </td> |
| </tr> |
| <tr id="i11" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../org/apache/calcite/plan/RelOptPredicateList.html" title="org.apache.calcite.plan中的类">RelOptPredicateList</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/metadata/RelMdPredicates.html#getPredicates-org.apache.calcite.rel.core.Sort-org.apache.calcite.rel.metadata.RelMetadataQuery-">getPredicates</a></span>(<a href="../../../../../org/apache/calcite/rel/core/Sort.html" title="org.apache.calcite.rel.core中的类">Sort</a> sort, |
| <a href="../../../../../org/apache/calcite/rel/metadata/RelMetadataQuery.html" title="org.apache.calcite.rel.metadata中的类">RelMetadataQuery</a> mq)</code> |
| <div class="block">Infers predicates for a Sort.</div> |
| </td> |
| </tr> |
| <tr id="i12" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../../org/apache/calcite/plan/RelOptPredicateList.html" title="org.apache.calcite.plan中的类">RelOptPredicateList</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/metadata/RelMdPredicates.html#getPredicates-org.apache.calcite.rel.core.TableModify-org.apache.calcite.rel.metadata.RelMetadataQuery-">getPredicates</a></span>(<a href="../../../../../org/apache/calcite/rel/core/TableModify.html" title="org.apache.calcite.rel.core中的类">TableModify</a> tableModify, |
| <a href="../../../../../org/apache/calcite/rel/metadata/RelMetadataQuery.html" title="org.apache.calcite.rel.metadata中的类">RelMetadataQuery</a> mq)</code> |
| <div class="block">Infers predicates for a TableModify.</div> |
| </td> |
| </tr> |
| <tr id="i13" class="rowColor"> |
| <td class="colFirst"><code><a href="../../../../../org/apache/calcite/plan/RelOptPredicateList.html" title="org.apache.calcite.plan中的类">RelOptPredicateList</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/metadata/RelMdPredicates.html#getPredicates-org.apache.calcite.rel.core.TableScan-org.apache.calcite.rel.metadata.RelMetadataQuery-">getPredicates</a></span>(<a href="../../../../../org/apache/calcite/rel/core/TableScan.html" title="org.apache.calcite.rel.core中的类">TableScan</a> table, |
| <a href="../../../../../org/apache/calcite/rel/metadata/RelMetadataQuery.html" title="org.apache.calcite.rel.metadata中的类">RelMetadataQuery</a> mq)</code> |
| <div class="block">Infers predicates for a table scan.</div> |
| </td> |
| </tr> |
| <tr id="i14" class="altColor"> |
| <td class="colFirst"><code><a href="../../../../../org/apache/calcite/plan/RelOptPredicateList.html" title="org.apache.calcite.plan中的类">RelOptPredicateList</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/metadata/RelMdPredicates.html#getPredicates-org.apache.calcite.rel.core.Union-org.apache.calcite.rel.metadata.RelMetadataQuery-">getPredicates</a></span>(<a href="../../../../../org/apache/calcite/rel/core/Union.html" title="org.apache.calcite.rel.core中的类">Union</a> union, |
| <a href="../../../../../org/apache/calcite/rel/metadata/RelMetadataQuery.html" title="org.apache.calcite.rel.metadata中的类">RelMetadataQuery</a> mq)</code> |
| <div class="block">Infers predicates for a Union.</div> |
| </td> |
| </tr> |
| </table> |
| <ul class="blockList"> |
| <li class="blockList"><a name="methods.inherited.from.class.java.lang.Object"> |
| <!-- --> |
| </a> |
| <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#clone--" title="java.lang中的类或接口">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#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/Object.html?is-external=true#finalize--" title="java.lang中的类或接口">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--" title="java.lang中的类或接口">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="java.lang中的类或接口">hashCode</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#toString--" title="java.lang中的类或接口">toString</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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| <a name="SOURCE"> |
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| <h4>SOURCE</h4> |
| <pre>public static final <a href="../../../../../org/apache/calcite/rel/metadata/RelMetadataProvider.html" title="org.apache.calcite.rel.metadata中的接口">RelMetadataProvider</a> SOURCE</pre> |
| </li> |
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| <h3>构造器详细资料</h3> |
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| <h4>RelMdPredicates</h4> |
| <pre>public RelMdPredicates()</pre> |
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| <pre>public <a href="../../../../../org/apache/calcite/rel/metadata/MetadataDef.html" title="org.apache.calcite.rel.metadata中的类">MetadataDef</a><<a href="../../../../../org/apache/calcite/rel/metadata/BuiltInMetadata.Predicates.html" title="org.apache.calcite.rel.metadata中的接口">BuiltInMetadata.Predicates</a>> getDef()</pre> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">指定者:</span></dt> |
| <dd><code><a href="../../../../../org/apache/calcite/rel/metadata/MetadataHandler.html#getDef--">getDef</a></code> 在接口中 <code><a href="../../../../../org/apache/calcite/rel/metadata/MetadataHandler.html" title="org.apache.calcite.rel.metadata中的接口">MetadataHandler</a><<a href="../../../../../org/apache/calcite/rel/metadata/BuiltInMetadata.Predicates.html" title="org.apache.calcite.rel.metadata中的接口">BuiltInMetadata.Predicates</a>></code></dd> |
| </dl> |
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| <a name="getPredicates-org.apache.calcite.rel.RelNode-org.apache.calcite.rel.metadata.RelMetadataQuery-"> |
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| <h4>getPredicates</h4> |
| <pre>public <a href="../../../../../org/apache/calcite/plan/RelOptPredicateList.html" title="org.apache.calcite.plan中的类">RelOptPredicateList</a> getPredicates(<a href="../../../../../org/apache/calcite/rel/RelNode.html" title="org.apache.calcite.rel中的接口">RelNode</a> rel, |
| <a href="../../../../../org/apache/calcite/rel/metadata/RelMetadataQuery.html" title="org.apache.calcite.rel.metadata中的类">RelMetadataQuery</a> mq)</pre> |
| <div class="block">Catch-all implementation for |
| <a href="../../../../../org/apache/calcite/rel/metadata/BuiltInMetadata.Predicates.html#getPredicates--"><code>BuiltInMetadata.Predicates.getPredicates()</code></a>, |
| invoked using reflection.</div> |
| <dl> |
| <dt><span class="seeLabel">另请参阅:</span></dt> |
| <dd><a href="../../../../../org/apache/calcite/rel/metadata/RelMetadataQuery.html#getPulledUpPredicates-org.apache.calcite.rel.RelNode-"><code>RelMetadataQuery.getPulledUpPredicates(RelNode)</code></a></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getPredicates-org.apache.calcite.plan.hep.HepRelVertex-org.apache.calcite.rel.metadata.RelMetadataQuery-"> |
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| <h4>getPredicates</h4> |
| <pre>public <a href="../../../../../org/apache/calcite/plan/RelOptPredicateList.html" title="org.apache.calcite.plan中的类">RelOptPredicateList</a> getPredicates(<a href="../../../../../org/apache/calcite/plan/hep/HepRelVertex.html" title="org.apache.calcite.plan.hep中的类">HepRelVertex</a> rel, |
| <a href="../../../../../org/apache/calcite/rel/metadata/RelMetadataQuery.html" title="org.apache.calcite.rel.metadata中的类">RelMetadataQuery</a> mq)</pre> |
| </li> |
| </ul> |
| <a name="getPredicates-org.apache.calcite.rel.core.TableScan-org.apache.calcite.rel.metadata.RelMetadataQuery-"> |
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| <h4>getPredicates</h4> |
| <pre>public <a href="../../../../../org/apache/calcite/plan/RelOptPredicateList.html" title="org.apache.calcite.plan中的类">RelOptPredicateList</a> getPredicates(<a href="../../../../../org/apache/calcite/rel/core/TableScan.html" title="org.apache.calcite.rel.core中的类">TableScan</a> table, |
| <a href="../../../../../org/apache/calcite/rel/metadata/RelMetadataQuery.html" title="org.apache.calcite.rel.metadata中的类">RelMetadataQuery</a> mq)</pre> |
| <div class="block">Infers predicates for a table scan.</div> |
| </li> |
| </ul> |
| <a name="getPredicates-org.apache.calcite.rel.core.Project-org.apache.calcite.rel.metadata.RelMetadataQuery-"> |
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| <h4>getPredicates</h4> |
| <pre>public <a href="../../../../../org/apache/calcite/plan/RelOptPredicateList.html" title="org.apache.calcite.plan中的类">RelOptPredicateList</a> getPredicates(<a href="../../../../../org/apache/calcite/rel/core/Project.html" title="org.apache.calcite.rel.core中的类">Project</a> project, |
| <a href="../../../../../org/apache/calcite/rel/metadata/RelMetadataQuery.html" title="org.apache.calcite.rel.metadata中的类">RelMetadataQuery</a> mq)</pre> |
| <div class="block">Infers predicates for a project. |
| |
| <ol> |
| <li>create a mapping from input to projection. Map only positions that |
| directly reference an input column. |
| <li>Expressions that only contain above columns are retained in the |
| Project's pullExpressions list. |
| <li>For e.g. expression 'a + e = 9' below will not be pulled up because 'e' |
| is not in the projection list. |
| |
| <blockquote><pre> |
| inputPullUpExprs: {a > 7, b + c < 10, a + e = 9} |
| projectionExprs: {a, b, c, e / 2} |
| projectionPullupExprs: {a > 7, b + c < 10} |
| </pre></blockquote> |
| |
| </ol></div> |
| </li> |
| </ul> |
| <a name="getPredicates-org.apache.calcite.rel.core.Filter-org.apache.calcite.rel.metadata.RelMetadataQuery-"> |
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| <h4>getPredicates</h4> |
| <pre>public <a href="../../../../../org/apache/calcite/plan/RelOptPredicateList.html" title="org.apache.calcite.plan中的类">RelOptPredicateList</a> getPredicates(<a href="../../../../../org/apache/calcite/rel/core/Filter.html" title="org.apache.calcite.rel.core中的类">Filter</a> filter, |
| <a href="../../../../../org/apache/calcite/rel/metadata/RelMetadataQuery.html" title="org.apache.calcite.rel.metadata中的类">RelMetadataQuery</a> mq)</pre> |
| <div class="block">Add the Filter condition to the pulledPredicates list from the input.</div> |
| </li> |
| </ul> |
| <a name="getPredicates-org.apache.calcite.rel.core.Join-org.apache.calcite.rel.metadata.RelMetadataQuery-"> |
| <!-- --> |
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| <h4>getPredicates</h4> |
| <pre>public <a href="../../../../../org/apache/calcite/plan/RelOptPredicateList.html" title="org.apache.calcite.plan中的类">RelOptPredicateList</a> getPredicates(<a href="../../../../../org/apache/calcite/rel/core/Join.html" title="org.apache.calcite.rel.core中的类">Join</a> join, |
| <a href="../../../../../org/apache/calcite/rel/metadata/RelMetadataQuery.html" title="org.apache.calcite.rel.metadata中的类">RelMetadataQuery</a> mq)</pre> |
| <div class="block">Infers predicates for a <a href="../../../../../org/apache/calcite/rel/core/Join.html" title="org.apache.calcite.rel.core中的类"><code>Join</code></a> (including |
| <code>SemiJoin</code>).</div> |
| </li> |
| </ul> |
| <a name="getPredicates-org.apache.calcite.rel.core.Aggregate-org.apache.calcite.rel.metadata.RelMetadataQuery-"> |
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| <h4>getPredicates</h4> |
| <pre>public <a href="../../../../../org/apache/calcite/plan/RelOptPredicateList.html" title="org.apache.calcite.plan中的类">RelOptPredicateList</a> getPredicates(<a href="../../../../../org/apache/calcite/rel/core/Aggregate.html" title="org.apache.calcite.rel.core中的类">Aggregate</a> agg, |
| <a href="../../../../../org/apache/calcite/rel/metadata/RelMetadataQuery.html" title="org.apache.calcite.rel.metadata中的类">RelMetadataQuery</a> mq)</pre> |
| <div class="block">Infers predicates for an Aggregate. |
| |
| <p>Pulls up predicates that only contains references to columns in the |
| GroupSet. For e.g. |
| |
| <blockquote><pre> |
| inputPullUpExprs : { a > 7, b + c < 10, a + e = 9} |
| groupSet : { a, b} |
| pulledUpExprs : { a > 7} |
| </pre></blockquote></div> |
| </li> |
| </ul> |
| <a name="getPredicates-org.apache.calcite.rel.core.Union-org.apache.calcite.rel.metadata.RelMetadataQuery-"> |
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| <h4>getPredicates</h4> |
| <pre>public <a href="../../../../../org/apache/calcite/plan/RelOptPredicateList.html" title="org.apache.calcite.plan中的类">RelOptPredicateList</a> getPredicates(<a href="../../../../../org/apache/calcite/rel/core/Union.html" title="org.apache.calcite.rel.core中的类">Union</a> union, |
| <a href="../../../../../org/apache/calcite/rel/metadata/RelMetadataQuery.html" title="org.apache.calcite.rel.metadata中的类">RelMetadataQuery</a> mq)</pre> |
| <div class="block">Infers predicates for a Union.</div> |
| </li> |
| </ul> |
| <a name="getPredicates-org.apache.calcite.rel.core.Intersect-org.apache.calcite.rel.metadata.RelMetadataQuery-"> |
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| <h4>getPredicates</h4> |
| <pre>public <a href="../../../../../org/apache/calcite/plan/RelOptPredicateList.html" title="org.apache.calcite.plan中的类">RelOptPredicateList</a> getPredicates(<a href="../../../../../org/apache/calcite/rel/core/Intersect.html" title="org.apache.calcite.rel.core中的类">Intersect</a> intersect, |
| <a href="../../../../../org/apache/calcite/rel/metadata/RelMetadataQuery.html" title="org.apache.calcite.rel.metadata中的类">RelMetadataQuery</a> mq)</pre> |
| <div class="block">Infers predicates for a Intersect.</div> |
| </li> |
| </ul> |
| <a name="getPredicates-org.apache.calcite.rel.core.Minus-org.apache.calcite.rel.metadata.RelMetadataQuery-"> |
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| <h4>getPredicates</h4> |
| <pre>public <a href="../../../../../org/apache/calcite/plan/RelOptPredicateList.html" title="org.apache.calcite.plan中的类">RelOptPredicateList</a> getPredicates(<a href="../../../../../org/apache/calcite/rel/core/Minus.html" title="org.apache.calcite.rel.core中的类">Minus</a> minus, |
| <a href="../../../../../org/apache/calcite/rel/metadata/RelMetadataQuery.html" title="org.apache.calcite.rel.metadata中的类">RelMetadataQuery</a> mq)</pre> |
| <div class="block">Infers predicates for a Minus.</div> |
| </li> |
| </ul> |
| <a name="getPredicates-org.apache.calcite.rel.core.Sort-org.apache.calcite.rel.metadata.RelMetadataQuery-"> |
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| <h4>getPredicates</h4> |
| <pre>public <a href="../../../../../org/apache/calcite/plan/RelOptPredicateList.html" title="org.apache.calcite.plan中的类">RelOptPredicateList</a> getPredicates(<a href="../../../../../org/apache/calcite/rel/core/Sort.html" title="org.apache.calcite.rel.core中的类">Sort</a> sort, |
| <a href="../../../../../org/apache/calcite/rel/metadata/RelMetadataQuery.html" title="org.apache.calcite.rel.metadata中的类">RelMetadataQuery</a> mq)</pre> |
| <div class="block">Infers predicates for a Sort.</div> |
| </li> |
| </ul> |
| <a name="getPredicates-org.apache.calcite.rel.core.TableModify-org.apache.calcite.rel.metadata.RelMetadataQuery-"> |
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| <h4>getPredicates</h4> |
| <pre>public <a href="../../../../../org/apache/calcite/plan/RelOptPredicateList.html" title="org.apache.calcite.plan中的类">RelOptPredicateList</a> getPredicates(<a href="../../../../../org/apache/calcite/rel/core/TableModify.html" title="org.apache.calcite.rel.core中的类">TableModify</a> tableModify, |
| <a href="../../../../../org/apache/calcite/rel/metadata/RelMetadataQuery.html" title="org.apache.calcite.rel.metadata中的类">RelMetadataQuery</a> mq)</pre> |
| <div class="block">Infers predicates for a TableModify.</div> |
| </li> |
| </ul> |
| <a name="getPredicates-org.apache.calcite.rel.core.Exchange-org.apache.calcite.rel.metadata.RelMetadataQuery-"> |
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| <h4>getPredicates</h4> |
| <pre>public <a href="../../../../../org/apache/calcite/plan/RelOptPredicateList.html" title="org.apache.calcite.plan中的类">RelOptPredicateList</a> getPredicates(<a href="../../../../../org/apache/calcite/rel/core/Exchange.html" title="org.apache.calcite.rel.core中的类">Exchange</a> exchange, |
| <a href="../../../../../org/apache/calcite/rel/metadata/RelMetadataQuery.html" title="org.apache.calcite.rel.metadata中的类">RelMetadataQuery</a> mq)</pre> |
| <div class="block">Infers predicates for an Exchange.</div> |
| </li> |
| </ul> |
| <a name="getPredicates-org.apache.calcite.plan.volcano.RelSubset-org.apache.calcite.rel.metadata.RelMetadataQuery-"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>getPredicates</h4> |
| <pre>public <a href="../../../../../org/apache/calcite/plan/RelOptPredicateList.html" title="org.apache.calcite.plan中的类">RelOptPredicateList</a> getPredicates(<a href="../../../../../org/apache/calcite/plan/volcano/RelSubset.html" title="org.apache.calcite.plan.volcano中的类">RelSubset</a> r, |
| <a href="../../../../../org/apache/calcite/rel/metadata/RelMetadataQuery.html" title="org.apache.calcite.rel.metadata中的类">RelMetadataQuery</a> mq)</pre> |
| <dl> |
| <dt><span class="seeLabel">另请参阅:</span></dt> |
| <dd><a href="../../../../../org/apache/calcite/rel/metadata/RelMetadataQuery.html#getPulledUpPredicates-org.apache.calcite.rel.RelNode-"><code>RelMetadataQuery.getPulledUpPredicates(RelNode)</code></a></dd> |
| </dl> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| </ul> |
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