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proc sort data=a nodupkey;
by variable;
run;
nodupkey可以删掉variable值相同的重复的观测
俄的神诶，太感谢了！
The NODUP option checks for and eliminates duplicate observations.The NODUPKEY option checks for and eliminates duplicate observations by variable values.so PharmD 'answer is better, I think so.
an alternative:
proc sql;
select distinct *
from rawdata;
quit;
losttemple 发表于 2008-5-28 19:37 an alternative:proc sql; select distinct * from rawdata;quit;
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