i have a dataset like this
t1 t2 t3 t4
a . . .
. b . .
. . c d
a b c d
output i need is
test
a
b
cd
abcd
CATS, CATT - Does that count as two?
CATS and CATT are two data step functions that perform character string concatenation. As in
test = cats(of t1-t4);
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