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hi all
i know using we can create temparory variable but
what is use of in operator in this program(appending)
need some explanation
data forreport ;
set age(IN=in1)
gender (IN=in2)
race (IN=in3);
group=sum(in1*1,in2*2,in3*3);
run;
proc print data=forreport;
run;
than
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