SQL: Accumulative columns & Sum Across the Row

Question

I have a table and its record:

Profile | Level | CHgt | BHgt | SHgt | Z
ABCD1   | 1     | 15   | 11   | 50   | 0
ABCD1   | 2     | 15   | 11   | 70   | 0
ABCD1   | 3          


        

Answer 1

This would be easier in more recent versions of SQL Server. But you can do this using apply:

select t.*, t2.Bhgt2,
       (case when level = 0 then 0 else SHgt2 end) as Shgt2,
       (CHgt + t2.Bhgt2 + (case when level = 0 then 0 else SHgt2 end) ) as Z
from t cross apply
     (select sum(Bhgt) as Bhgt2,
             sum(SHgt) as SHgt2
      from t t2
      where t2.profile = t.profile and t2.level <= t.level 
     ) t2;

Answer 2

Two items: 1) Gordon's response was virtually spot on except for the Level=0. Should be Level=1

2) I'm not convinced the last row of your desired results is correct, I think you are off by 10. If I am not correct, let me know and I will re-visit this.

Declare @Table table (Profile varchar(25),Level int,CHgt int,BHgt int, SHgt int, Z int)
Insert into @Table values
('ABCD1' , 1  , 15 , 11 , 50 , 0),
('ABCD1' , 2  , 15 , 11 , 70 , 0),
('ABCD1' , 3  , 15 , 11 , 70 , 0),
('ABCD2' , 1  , 15 , 11 , 60 , 0),
('ABCD2' , 2  , 15 , 11 , 80 , 0),
('ABCD2' , 3  , 15 , 11 , 80 , 0),
('ABCD3' , 1  , 15 , 11 , 40 , 0),
('ABCD3' , 2  , 15 , 11 , 60 , 0),
('ABCD3' , 3  , 15 , 11 , 60 , 0)

select A.Profile
      ,A.Level
      ,A.CHgt
      ,A.BHgt
      ,A.SHgt
      ,B.Bhgt2
      ,Shgt2 = case when Level = 1 then 0 else SHgt2 end
      ,Z     = CHgt + B.Bhgt2 + case when level = 1 then 0 else SHgt2 end 
From @Table A 
Cross Apply (Select Bhgt2 = sum(Bhgt)
                   ,SHgt2 = sum(SHgt)
              From  @Table B
              Where B.Profile = A.Profile and A.Level >= B.Level 
            ) B;

Returns

Profile Level   CHgt    BHgt    SHgt    Bhgt2   Shgt2   Z
ABCD1   1       15      11      50      11      0       26
ABCD1   2       15      11      70      22      120     157
ABCD1   3       15      11      70      33      190     238
ABCD2   1       15      11      60      11      0       26
ABCD2   2       15      11      80      22      140     177
ABCD2   3       15      11      80      33      220     268
ABCD3   1       15      11      40      11      0       26
ABCD3   2       15      11      60      22      100     137
ABCD3   3       15      11      60      33      160     208