I have 4 columns I am trying to concatenate and unconcatenate later       Var         Samp          Test     Unit            A       Sample1     Test1                    A       Sample2                    kg        I tried the following catx("-", Var, Samp, Test, Unit); which will give me the following and doesn't leave any room for spaces. I would like to concatenate with the space so that I can unconcatenate later.    New       A-Sample1-Test1                    A-Sample2-kg       Want    A-Sample1-Test1-                   A-Sample2- -kg  As for unconcatenating, I would try somethig like the following but am unsure how to use the scan function.    data want; set have; array var(3) $; do i = 1 to dim(var); var[i]=scan(row,i,'-','M'); end; run;         ... View more