两张表 select deptSal.dept_no , deptSal.emp_no , deptMaxSal.maxSalary from ( select * , (select dept_no from dept_emp e where s.emp_no = e.emp_no) dept_no from salaries s ) deptSal , /* 部门编号,员工编号,当前薪水 */ (select dept_no,max(salary) maxSalary from ( select * , (select dept_no f...