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
https://www.nowcoder.com/practice/5a7975fabe1146329cee4f670c27ad55
select last_name, first_name, dept_name from employees a left join dept_emp b on a.emp_no=b.emp_no left join departments c on b.dept_no=c.dept_no
