Package org.apache.calcite.rel.metadata
Interface BuiltInMetadata.DistinctRowCount.Handler
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- All Superinterfaces:
MetadataHandler<BuiltInMetadata.DistinctRowCount>
- Enclosing interface:
- BuiltInMetadata.DistinctRowCount
public static interface BuiltInMetadata.DistinctRowCount.Handler extends MetadataHandler<BuiltInMetadata.DistinctRowCount>
Handler API.
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Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method Description java.lang.Double
getDistinctRowCount(RelNode r, RelMetadataQuery mq, ImmutableBitSet groupKey, RexNode predicate)
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Methods inherited from interface org.apache.calcite.rel.metadata.MetadataHandler
getDef
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Method Detail
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getDistinctRowCount
java.lang.Double getDistinctRowCount(RelNode r, RelMetadataQuery mq, ImmutableBitSet groupKey, RexNode predicate)
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