题解 | #查找所有员工的last_name和first_name以及对应的dept_name#
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 employees em left join (departments depa,dept_emp dept) on em.emp_no=dept.emp_no and dept.dept_no=depa.dept_no;