data ff;
input a b $8.;
datalines;
1 tom
2 ine
3 paula
4 stella
run;

data groot;
input c d;
datalines;
1 100
1 112
2 334
3 554
3 776
4 557
5 777
run;

data samen;
length a 8.;
length b $8.;

if _N_ = 1 then do;
   declare hash h(dataset: "ff");
   rc = h.defineKey('a');
   rc = h.defineData('a', 'b');
   rc = h.defineDone();
   call missing(a, b);
end;
set groot;
rc=h.find(key:c);
if rc=0 then output;

run;