Transposing wide to long in SAS, without extra columns

Question

I\'d like to transpose a dataset, but SAS insists on adding a new column, if the \"by\" column has multiple entries.

So if I run

data test;
    input a b         


        

Answer 1

This ought to work (using your example code):

proc transpose data=test out=test_tran1(rename=(_name_ = old_var));
  by a;
  var b c;
run;

proc transpose data=test_tran1 out=test_tran2(drop=_: rename = (col1=values) where = (not missing(values)));
  by a old_var;
  var col:;
run;