Interface ColumnOrdering

  • All Known Implementing Classes:
    IndexColumnOrder

    public interface ColumnOrdering
    The column ordering interface defines a column that is to be ordered in a sort or index, and how it is to be ordered. Column instances are compared by calling the compare(Orderable) method of Orderable.
    • Method Detail

      • getColumnId

        int getColumnId()
      • getIsAscending

        boolean getIsAscending()
      • getIsNullsOrderedLow

        boolean getIsNullsOrderedLow()
        Indicate whether NULL values should be ordered below non-NULL. This function returns TRUE if the user has specified, via the clause in the ORDER BY clause, that NULL values of this column should sort lower than non-NULL values.
        Returns:
        whether nulls should sort low