def continuous(self):
        """
        Set sequence to be continuous.

        :rtype: Column

        :Example:

        >>> # Table schema is create table test(f1 double, f2 string)
        >>> # Original continuity: f1=DISCRETE, f2=DISCRETE
        >>> # Now we want to set ``f1`` and ``f2`` into continuous
        >>> new_ds = df.continuous('f1 f2')
        """
        field_name = self.name
        new_df = copy_df(self)
        new_df._perform_operation(op.FieldContinuityOperation({field_name: True}))
        return new_df
Set sequence to be continuous.

        :rtype: Column

        :Example:

        >>> # Table schema is create table test(f1 double, f2 string)
        >>> # Original continuity: f1=DISCRETE, f2=DISCRETE
        >>> # Now we want to set ``f1`` and ``f2`` into continuous
        >>> new_ds = df.continuous('f1 f2')