select d.emp_no,m.emp_no as manager from dept_emp as d left join dept_manager as m on d.dept_no=m.dept_no where d.emp_no!=m.emp_no
select d.emp_no,m.emp_no as manager from dept_emp as d left join dept_manager as m on d.dept_no=m.dept_no where d.emp_no!=m.emp_no