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
select t1.emp_no, manager_no, t1.salary, salaries.salary as manager_salary from ( select salaries.emp_no, dept_manager.emp_no as manager_no, salaries.salary from salaries left join dept_emp on salaries.emp_no = dept_emp.emp_no left join dept_manager on dept_emp.dept_no = dept_manager.dept_no ) t1 left join salaries on t1.manager_no=salaries.emp_no where t1.salary>salaries.salary