Question

sas通过不同的数据集汇总不同的变量,怎样写一个宏过程实现

Answer 1

data a; input x @@; cards; 1 2 3 4 ; run; data b; input x y @@; cards; 1 2 2 4 3 6 4 8 ; run; proc sql; create table ab as select a.x ,b.y from a as a left join b as b on a.x=b.x order by x; quit;