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 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 Details

    • 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.