How to remove duplicated records\\observations WITHOUT sorting in SAS？

Question

I wonder if there is a way to unduplicate records **WITHOUT** sorting?Sometimes, I want to keep original order and just want to remove duplicated records. Is it possible? BTW, below are what I know regarding unduplicating records, which does sorting in the end.. 1. proc sql; create table yourdata_nodupe as select distinct * From abc; quit; 2. proc sort data=YOURDATA nodupkey; by var1 var2 var3 var4 var5; run;

Answer 1

Here's one way around it:

data YOURDATA; set YOURDATA; n=_N_; run;

proc sort data=YOURDATA nodupkey; by x; run;

proc sort data=YOURDATA out=YOURDATA(drop=n); by n; run;