Calculation in Sql Server

Question

I trying to perform following calculation

Sample data:

CREATE TABLE #Table1
  (
     rno   int identity(1,1),
     ccp   varchar(50),
          


        

Answer 1

Another option

CREATE TABLE #Table1
  (
     rno   int identity(1,1),
     ccp   varchar(50),
     [col1] INT,
     [col2] INT,
     [col3] INT,
     col4 as [col2]/100.0
  );

INSERT INTO #Table1
            (ccp,[col1],[col2],[col3])
VALUES      ('ccp1',15,10,1100),
            ('ccp1',20,10,1210),
            ('ccp1',30,10,1331),
            ('ccp1',40,10,1331),
            ('ccp2',10,15,900),
            ('ccp2',15,15,1000),
            ('ccp2',20,15,1010);

select t.*, col3-s
from(
    select *, rn = row_number() over(partition by ccp order by rno)
    from #Table1
) t
cross apply (
    select s=sum(pwr*col1)
    from(
        select top(rn)
           col1, pwr = power(1+col4, rn + 1 - row_number() over(order by rno))
        from #Table1 t2
        where t2.ccp=t.ccp
        order by row_number() over(order by rno)
        )t3
    )t4
order by rno;