- 输入样例：SELECT department_name FROM departments WHERE department_id IN (SELECT department_id FROM employees GROUP BY department_id HAVING COUNT(*) > 10)

- 输出样例：这个SQL查询语句的意思是：从departments表中选择department_name列，其中department_id列的值在employees表中department_id列的值分组后，如果该组中的记录数大于10，则返回该department_id。换句话说，这个查询语句返回的是在employees表中有超过10个员工的部门名称。