You can try something like this:
PROC SUMMARY DATA=my_data NWAY;
CLASS by_var1 byvar2;
OUTPUT OUT=my_output MAX(var1 var2 var3)=var1 var2 var3;
RUN;
(there is also the option maxid to preserve some id variable (eg: names, data, time, etc...))
Best regards
Jaroslav
Message was edited by: Jaroslav