data crackman;
input var1 $ var2 var3 @;
cards;
a 01 3
b 01 6
c 09 5
b 05 4
b 05 7
;
run;
proc sort data=crackman out=a;
by var1 var2;
run;
proc sql;
create table result as select var1,var2,sum(var3) as sum from a group by var1,var2;
quit;