org.apache.calcite.rel.metadata

Interface BuiltInMetadata.ColumnUniqueness.Handler

All Superinterfaces:

MetadataHandler<BuiltInMetadata.ColumnUniqueness>

Enclosing interface:

BuiltInMetadata.ColumnUniqueness

public static interface BuiltInMetadata.ColumnUniqueness.Handler
extends MetadataHandler<BuiltInMetadata.ColumnUniqueness>

Handler API.

Method Summary

Modifier and Type	Method and Description
Boolean	areColumnsUnique(RelNode r, RelMetadataQuery mq, ImmutableBitSet columns, boolean ignoreNulls)

Methods inherited from interface org.apache.calcite.rel.metadata.MetadataHandler

getDef

Method Detail

areColumnsUnique

Boolean areColumnsUnique(RelNode r,
                         RelMetadataQuery mq,
                         ImmutableBitSet columns,
                         boolean ignoreNulls)