Comparison of single dates and calculation based on these - index

Question

Hello,
I need to report on the index of sales for a certain date with the sales for a certain date previous year.
An example could be having sales data 2000 EUR for 2007.08.02 in column A and sales data 1000 EUR for 2006.08.03 in columns B on the same row so that the two calendar days could be compared in column C (formula 2000/1000 = 2).
I need help with ideas of how to reach this. I have one info objectin cube containing posting date in format: 2007.08.02.
Clever ideas highly appreciated..
thanks,
F C

Answer 1

FC,since the offset differs depending on the year in the date, its not possible to hard code it in query designer..
but this can be done in customer exit.
1. Create a user entry variable and a  customer exit variable (single value or interval )
2. Fill in the values of customer exit variable from user entry variable using this logic
DATA: l_s_range TYPE rsr_s_rangesid,
      loc_var_range TYPE rrrangeexit,
      l_year TYPE n,
      l_date type sy-datum,
CASE i_vnam.
  WHEN '<custoemr exit varaible>'.
    IF i_step = 2.                    
      LOOP AT i_t_var_range INTO loc_var_range
                   WHERE vnam = '<user entry variable>'.
        l_date = loc_var_range-low.
        l_year = loc_var_range-low(4).
        Case l_year.
            when 2005.
                    l_date = l_date - 365.
            when 2006.
                    l_date = l_date - 364.
        Endcase.       
        l_s_range-low = l_date.
        l_s_range-opt   = 'EQ'.
        l_s_range-sign  = 'I'.
        APPEND l_s_range TO e_t_range.
        EXIT.
      ENDLOOP.
    ENDIF.
endcase.