题解 | 获取员工其当前的薪水比其manager当前薪水还高的相关信息
获取员工其当前的薪水比其manager当前薪水还高的相关信息
https://www.nowcoder.com/practice/f858d74a030e48da8e0f69e21be63bef
select t1.emp_no, t2.emp_no, emp_salary, t2.salary from ( select de.emp_no emp_no, s1.salary emp_salary, de.dept_no dept_no from dept_emp de left join salaries s1 on de.emp_no = s1.emp_no ) as t1 left join ( select dept_no, salary, dm.emp_no emp_no from dept_manager dm inner join salaries s2 on dm.emp_no = s2.emp_no ) as t2 on t1.dept_no = t2.dept_no where t1.emp_salary > t2.salary
先连接表得到员工的工资,再连接表的到经理的工资,根据部门号将两个表连接,最后再where一下就好了