Year-To-Date Sales by month calculation in cube

Question

Hi everyone,
I want to already calculate the 'YTD Sales'by month in my cube, so I increase performance when the user is running his report. YTDSALES = Actual Month Total Sales + Previous month YD Total Sales.
Not sure how to implement it in the update rule. Looks like a lt of coding. Any suggestions would be greatly appreciated.
Thanks, RL

Answer 1

You should do a little loop in the start routine and write all the monthly values into any periods up to period 12. The coding could look like:
data: l_d_data_package like line of data_package,
      l_t_data_package TYPE STANDARD TABLE OF 
                       DATA_PACKAGE_STRUCTURE
                       WITH HEADER LINE
       WITH NON-UNIQUE DEFAULT KEY INITIAL SIZE 0.
  loop at data_package into l_d_data_package.
    l_d_data_package-/bic/ytdsales =
         l_d_data_package-/bic/sales. "or other keyfig
    while l_d_data_package-calmonth+4(2) <= '12'.
      append l_d_data_package to l_t_data_package.
      clear l_d_data_package-/bic/sales. "or other keyfig
      l_d_data_package-calmonth+4(2) =
         l_d_data_package-calmonth+4(2) + 1.
*     If you have fiscper or fiscper3 or
*     calquarter you may need to adjust it here too.
    endwhile.
  endloop.
  data_package[] = l_t_data_package[].
But you should first check if aggregates or precalculated web templates are better.
Best regards
   Dirk