一. select first_name from( select right(employee1.A,1) as you ,left(employee1.A,1) as zuo ,employee1.first_name from (select right(first_name, 2) as A ,first_name from employees) as employee1) as employee2 order by employee2.zuo ASC, employee2.you ASC 二.select employee1.first_namefrom(selectright(...