Answer Posted / sas job searcher

data x1y1
x1y0
x0y1;
/* x1y1, x1y0, x0y1 are output data set names */
merge left_most(in=x) right_most(in=y);
by id;
/* write all matches to x1y1: */
if x=1 and y=1 then output x1y1;
/* non-matches from the left-most data set: */
if x=1 and y=0 then output x1y0;
/* non-matches from the right-most data set: */
if x=0 and y=1 then output x0y1;
run;

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