text: -- create a class with condition 'int auto_increment not null'
  
  create class xoo ( id int auto_increment not null  ,
                     title varchar(100));
  
  insert into xoo(title) values ('aaa');
  insert into xoo(title) values ('bbb');
  insert into xoo(title) values ('ccc');
  
  select * from xoo order by 1;
  
  drop class xoo;