data AllSubjects(keep=Age Subject);
  input Age @;
  do i=1 to 3;
    input Subject $ @;
    output;
  end;
datalines;
  13 Math History English
  14 Math Science English
  run;
proc sql;
  create table schedules_sql as
    select Class.*, Subject
      from sashelp.class(where=(Age in (13,14))),
           AllSubjects
      where Class.Age=AllSubjects.Age
      order by Subject, Age, Name;
quit;
proc print data=schedules_sql;
  by Subject;
  id Subject;
  title1 "Many-to-many results";
run;