将字符串改为数值
用input生成新的变量
data a;
set a;
year_new=input(year,12.);
month_new=input(month,12.);
rename year_new=year;
rename month_new=month;
drop year month;
run;
将字符串改为数值
用input生成新的变量
data a;
set a;
year_new=input(year,12.);
month_new=input(month,12.);
rename year_new=year;
rename month_new=month;
drop year month;
run;