1 PROC SORT DATA=data-set 2 OUT=neat 3 NODUPKEY 4 DUPOUT=extraobs; 5 BY variable-1 variable-2 ... variable-n; 6 RUN;
备注:
【SAS BASE】PROC SORT,布布扣,bubuko.com
【SAS BASE】PROC SORT
原文:http://www.cnblogs.com/chenyn68/p/3866001.html