方法一: SELECT S.emp_no, S.salary, S.from_date, de.to_date, de.dept_no FROM salaries AS S, dept_manager AS de WHERE de.emp_no = S.emp_no ORDER BY S.emp_No; 方法二: SELECT S.emp_no, S.salary, S.from_date, de.to_date, de.dept_no FROM salaries AS S INNER JOIN dept_manager AS de ON de.emp_no = S.emp_no ORDER BY S.emp_No;