Ok, here is a possible one for horizontal, credit to Data_null_; data have; input var1 var2 var3 var4 var5; retain id 1; datalines; 1 . . . . . 2 . . . . . 3. . . . . . 4 . . . . . 5 ; data want; update have(obs=0) have; by id; drop id; run; Haikuo
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