题解 | #获取所有员工当前的manager#
获取所有员工当前的manager
https://www.nowcoder.com/practice/e50d92b8673a440ebdf3a517b5b37d62
select de.emp_no,ma.emp_no from dept_emp de join dept_manager ma on de.dept_no=ma.dept_no where de.emp_no not in (select dept_manager.emp_no from dept_manager)
子函数先写出是经理的员工编号,然后连接表,取反