org.apache.calcite.tools

Interface RelBuilder.GroupKey

Enclosing class:

RelBuilder

public static interface RelBuilder.GroupKey

Information necessary to create the GROUP BY clause of an Aggregate.

See Also:

RelBuilder.groupKey()

Method Summary

Modifier and Type	Method and Description
RelBuilder.GroupKey	alias(@Nullable String alias) Assigns an alias to this group key.
int	groupKeyCount() Returns the number of columns in the group key.

Method Detail

alias

RelBuilder.GroupKey alias(@Nullable String alias)

Assigns an alias to this group key.

Used to assign field names in the group operation.

groupKeyCount

int groupKeyCount()

Returns the number of columns in the group key.