You can use SAS function anyalpha.

data t1;
  do x='@123%','123','x123%','@123Z';
     p=anyalpha(x);  
     put _all_;
         output;
  end;
  run;

proc sql;
  select x, anyalpha(x) as anyalpha_check
  from t1;
  quit;

试试 '%' + [A-Z] + '%'