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 de.emp_no,dm.emp_no manager_no,s1.salary emp_salary,s2.salary manager_salary FROM dept_emp de LEFT JOIN dept_manager dm USING(dept_no) LEFT JOIN salaries s1 ON de.emp_no=s1.emp_no LEFT JOIN salaries s2 ON dm.emp_no=s2.emp_no WHERE s1.salary>s2.salary
把salaries表连两次就行了
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