%macro test(varname);
proc sql;
create table new_&varname. as
select right_sort.sort as new_sort

      from right_sort left jion &varname.
      on right_sort.sort=&varname..sort
      order by right_sort.sort;
      quit;
%mend;
问题是我在macro里面能&varname..sort，这么写吗？？