%let ff ='20100122';
data a;
input x y$;
cards;
214200.4409 20080627
278460.5731 20081031
278459.3862 20090619
292367.4599 20090622
292375.6824 20090630
292411.4263 20091015
;
run;
data b;
set a end=eof;
output;
if eof then do;
y=&ff.;output;
end;
run;
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