3 Replies Latest reply: Sep 13, 2011 5:48 AM by Magnus Johnson RSS

    Need help with a summation problem

    Magnus Johnson

      Hi all,

       

      I would like to have a object with two columns the first showing amount and the second showing hours.

       

      In the first row I want to show our largest client and in the second row I would like to show the total sum of our 5 largest clients. My problem is that I want both columns to be sorted on the amount. Both columns should show the sum of the 5 largest clients ranked on the amount.

       

      In the attached example the column with the hours shows the wrong value because it takes the five largest clients sorted in hours instead of value. for the five largest clients it summarizes to 280 hours but I want it to add up to 240 hours. how do I do if I want it to be sort of the five largest clients in terms of value insted of of hours

       

      Many thanks in advance

       

      Magnus

        • Need help with a summation problem
          Lasse Kallioniemi

          Hi,

           

          you can use FirstSortedValue:

           

          IF(Largestclientrow=10,

                    FirstSortedValue(hours,-Amount,1)

          ,

          IF(Largestclientrow=20,

                    FirstSortedValue(hours,-Amount,1)

                    +FirstSortedValue(hours,-Amount,2)

                    +FirstSortedValue(hours,-Amount,3)

                    +FirstSortedValue(hours,-Amount,4)

                    +FirstSortedValue(hours,-Amount,5)

          ,

           

           

          IF(Largestclientrow=40,

          sum(hours)

          )))

           

           

          BR

          Lasse

          • Re: Need help with a summation problem
            Stefan Wühl

            Hi Magnus,

             

            try this for your expression:

            =IF(Largestclientrow=10,

            max(aggr(sum(hours),Client,Largestclient),1)

            ,

            IF(Largestclientrow=20,

            sum(aggr(if(rank(sum(Amount),4)<=5,sum(hours)),Largestclient,Client))

             

            ,

             

            IF(Largestclientrow=40,

            sum(hours)

            )))

             

            You could reuse the same expression to calculate your other TopX values, too, just replace the <=5 with =1 or <=40

             

            Regards,

            Stefan

             

            P.S. just saw Lasses solution, which probably works fine. Only disadvantage with FirstSortedValue is, that it is returning NULL if more than one value of expression share the same lowest sort-order.

             

            edit

            • Need help with a summation problem
              Magnus Johnson

              Thank you Lasse an Swuehl

               

              It is working perfect!