题解 | #查找最晚入职员工的所有信息#
查找所有员工的last_name和first_name以及对应的dept_name
http://www.nowcoder.com/practice/5a7975fabe1146329cee4f670c27ad55
select last_name,first_name,dept_name
from
(
select a.emp_no,last_name,first_name,dept_name
from employees a left join
(
select emp_no,dept_name from departments aa inner join dept_emp bb
on aa.dept_no=bb.dept_no
) b
on a.emp_no=b.emp_no