/* select t1.emp_no, t2.salary,t2.from_date,t2.to_date,t1.dept_nofrom salaries as t2 left join dept_manager as t1 on t1.emp_no = t2.emp_nowhere t2.to_date='9999-01-01' and t1.to_date='9999-01-01'order by t1.emp_no asc*/ select * from (select dept_manager.emp_no, salaries.salary,salaries.from_date,sa...