霸气

There is no such a function.

But it can easily done by informat + input function.

如可以，能否给个例子，谢谢啊

Here is an example.

%macro freqit(lib=work,dsn=, var=);
proc sql noprint;
  select catx(' ', 'table',name,'/out=_tmp_',';')  into: varlist separated by ' '
  from sashelp.vcolumn
  where libname=%UPCASE("&lib") and memname=%UPCASE("&dsn")
        and type='char' and upcase(name)=%UPCASE("&VAR")  ;
  quit;

  proc freq data=&lib..&dsn noprint;
  &varlist
  run;

  data _tmp_;
    set _tmp_ ;
        fmtname="$&var";
    start=&var;
        label=_N_;
  run;
   
  proc format cntlin =_tmp_;
  run;
   
%mend;


%freqit(lib=sashelp,dsn=class,var=sex)

data _null_;
  set sashelp.class;
  put sex= sex= $sex.;
run;

如果你只考虑单个字符的话，转成对应的ascii码就好了
在SAS里可以用rank函数