how to display duplicated observations in a data using base
sas.
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Answer Posted / m.sivakumar
data dups;
input var1;
datalines;
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;
run;
proc sort data=dups;
by var1;
run;
data dups1;
set dups;
by var1;
if not(first.var1 and last.var1) then output;
run;
proc print data=dups;
run;
proc print data=dups1;
run;
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