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| <h2 title="Interface BuiltInMetadata.PercentageOriginalRows" class="title">Interface BuiltInMetadata.PercentageOriginalRows</h2> |
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| <pre>public static interface <span class="typeNameLabel">BuiltInMetadata.PercentageOriginalRows</span> |
| extends <a href="../../../../../org/apache/calcite/rel/metadata/Metadata.html" title="interface in org.apache.calcite.rel.metadata">Metadata</a></pre> |
| <div class="block">Metadata about the proportion of original rows that remain in a relational |
| expression.</div> |
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| <td class="colFirst"><code>static interface </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/metadata/BuiltInMetadata.PercentageOriginalRows.Handler.html" title="interface in org.apache.calcite.rel.metadata">BuiltInMetadata.PercentageOriginalRows.Handler</a></span></code> |
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| <td class="colFirst"><code>static <a href="../../../../../org/apache/calcite/rel/metadata/MetadataDef.html" title="class in org.apache.calcite.rel.metadata">MetadataDef</a><<a href="../../../../../org/apache/calcite/rel/metadata/BuiltInMetadata.PercentageOriginalRows.html" title="interface in org.apache.calcite.rel.metadata">BuiltInMetadata.PercentageOriginalRows</a>></code></td> |
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| <td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Double.html?is-external=true" title="class or interface in java.lang">Double</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/calcite/rel/metadata/BuiltInMetadata.PercentageOriginalRows.html#getPercentageOriginalRows--">getPercentageOriginalRows</a></span>()</code> |
| <div class="block">Estimates the percentage of the number of rows actually produced by a |
| relational expression out of the number of rows it would produce if all |
| single-table filter conditions were removed.</div> |
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| <code><a href="../../../../../org/apache/calcite/rel/metadata/Metadata.html#rel--">rel</a></code></li> |
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| <h4>getPercentageOriginalRows</h4> |
| <pre><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Double.html?is-external=true" title="class or interface in java.lang">Double</a> getPercentageOriginalRows()</pre> |
| <div class="block">Estimates the percentage of the number of rows actually produced by a |
| relational expression out of the number of rows it would produce if all |
| single-table filter conditions were removed.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>estimated percentage (between 0.0 and 1.0), or null if no |
| reliable estimate can be determined</dd> |
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