update salaries set salary= salary * 1.1 where to_date = '9999-01-01' and emp_no in (select emp_no from emp_bonus); 更新数据用update [table] set [col] = ... 题目限定两个条件: 当前: to_date = '9999-01-01' 有奖金的,即需要用emp_bonus的emp_no:(select emp_no from emp_bonus)