Synopsis:

        sys_dateadd(start_date,days)

Arguments:

        start_date         - The starting date (either YYYYMMDD or YYMMDD)

        days                 - The number of days to add

Description:   This function adds the specified number of days to the start_date and returns a new date in the same format that the original was specified in.

If a negative value is given for days then the returned date will be before the start date specifed.

Return Value:

Returns the new date after adding the specified number of days to the start date.