data test;
 input id ;
datalines;
105
105
104
104
190
104
190
189
;
run;

proc sort data=test out=testsort;
 by id;
run;

data result;
 set testsort;
 by id;
 retain total_n  group_n 0;
 if first.id then
 do;
  total_n+1;
  group_n=0;
 end;
 group_n+1;
run;

proc print;
run;

                                                                     Obs     id    total_n    group_n

                                                                      1     104       1          1
                                                                      2     104       1          2
                                                                      3     104       1          3
                                                                      4     105       2          1
                                                                      5     105       2          2
                                                                      6     189       3          1
                                                                      7     190       4          1
                                                                      8     190       4          2

[此贴子已经被作者于2009-1-14 10:02:49编辑过]