** READING DATA WITH NA's IN NUMERIC FIELDS;
** create an input format;
proc format;
    invalue hasNA "NA"=. other=[best32.];
run;

data awesome;
    input name$ num1 :hasNA. num2 :hasNA.;
    cards;
    turkey 14.6 15.6
    chicken 26.2 NA
    hen NA 22
    duck 12.1 12.5
    dove 2.6 NA
;
run;
proc print; 
run;