In what sense?  Do you mean a row by row comparison, by certain identifiers, by distinct lists of values?  Post some example test data in the form of a datastep: https://communities.sas.com/t5/SAS-Communities-Library/How-to-create-a-data-step-version-of-your-data-AKA-generate/ta-p/258712   And what the output should be like.   All I can say from what you have posted is that there is a procedure called proc compare which is for comparing datasets.  Other than that I know nothing of your problem.   ... View more

The smallest change possible:  change +2 to +1.  +2 moves you past the first digit, to the comma. ... View more

%LET iterations = 5; %LET winner = Lance Armstrong; DO i = 1 to &iterations; <- This DO belongs in a data step block of code. You may be thinking of a macro loop which would use %DO but still has a syntax error because you show no End or %end. ... View more