Assign values

[Ayo_sas]

I need help with the following accomplishing the task below based on the following criteria:

1) if B_value='C' then sub_value=value

2)  if B-value not equal  'C', assign sub_value based on the following. If they have a common C-ID, assign the value of (B_value ='C' and start code='O' and living_code='A') to the other. For instance, in the first 4 data observation with a C_ID of 1, the sub_value for B11, C11 and D11 will be A11.

3) Do not assign (B-value ='C' and start_code='O' and living_code='D') to dependent values sharing the same C-ID. Instead use the value of B-value=C and start-code=S and living_code =A. For instance, where C-ID=3, the sub values of the other B-value=D, will

be B33

I'll prefer the data set method as supposed to proc sql but I'm okay with either approach

Thanks

DATA have

B_value    C_ID    Stat_code    Living_code    value      sub_value

C              1        O              A                  A11

D              1        z                A                B11

D              1        z                A                C11

D              1        z                A                D11

C              2        O              A                A22

C              2        S              A                B22

C              2        S              A                C22

C            2          S              A                D22

D            2          z              A                E22

D            2          z              A                F22

C            3        O              D                A33

C            3        S              A                  B33

D            3        z              A                  C33

D            3          z              A                  D33

D            3        z                A                  E33

Data Want

B_value    C_ID    Stat_code  Living_code    value      sub_value

C              1        O              A                  A11          A11

D              1        z                A                B11            A11

D              1        z                A                C11            A11

D              1        z                A                D11          A11

C              2        O              A                A22          A22

C              2        S              A                B22            B22

C              2        S                A                C22            C22

C            2          S                A                D22            D22

D            2          z                A                E22            A22

D            2          z                A                F22            A22

C            3        O                D                  A33          A33

C            3        S                A                  B33            B33

D            3        z                A                  C33            B33

D            3          z                A                  D33          B33

D            3        z                A                  E33          B33

[ballardw]

What do mean by "share the same C-ID"? Are you matching the data set agains other rows in the same data set? If so, which ones?

[Ayo_sas]

Take a look at the 4 observation below. They all have a C-ID value of 1. That's what i mean by "share the same C-ID

B_value   C_ID    Stat_code    Living_code    value      sub_value

C              1         O               A                  A11

D              1         z                A                 B11

D             1         z                A                 C11

D              1         z                A                 D11