select e.emp_no,a.salary,e.last_name,e.first_name from employees e, (select emp_no,max(salary) as salary from salaries where salary<(select max(salary) from salaries where to_date='9999-01-01') and to_date ='9999-01-01') as a where e.emp_no = a.emp_no 1. select max(salary) from salaries where to_...