compute is not working as expected , highlights identical data as mismatch

[radha1]

Hi Team, 

I am trying to compare the same data in the string columns, if it's not equal then return F, if it's equal then retun T using below code , even if the data in the columns are similar, including their lengths

proc sql;
create table TEstst as
select 
CODE_UNIT_old , CODE_UNIT,length(CODE_UNIT_old ),length(CODE_UNIT),
case when CODE_UNIT_old ne CODE_UNIT then 'T'
else 'F'
end as result
from MISMATCH
;
quit;

ans then am printing in a HTML , if the data is mimatch then highlight ,  with below code 

COMPUTE CODE_UNIT_old;

IF ( strip(CODE_UNIT_old) ne strip(CODE_UNIT) ) then
call define (_col_,"style","style={background= orange}");
ENDCOMP;

But  all rows are highlithed even if they have identical data .

CODE_UNIT_old CODE_UNIT           length_0ld length_new result
Fix 1,75%                Fix 1,75%                    9                    9           T
Fix 2,25%                Fix 2,25%                  9                     9          T

Can some one help this issue.

[RW9]

Its probably because your specifying _col_ in the define.  Hard to say from snippets of code in shouting language.  As simpler method would be to create a format and use that, as described in:

http://support.sas.com/resources/papers/proceedings11/290-2011.pdf

You wouldn't need all the compute parts then.