编写一个 SQL查询,找出所有影片描述为非 boring (不无聊) 的并且 id 为奇数的影片,结果请按等级 rating 排列。
例如,下表 cinema:
+---------+-----------+--------------+-----------+ | id | movie | description | rating | +---------+-----------+--------------+-----------+ | 1 | War | great 3D | 8.9 | | 2 | Science | fiction | 8.5 | | 3 | irish | boring | 6.2 | | 4 | Ice song | Fantacy | 8.6 | | 5 | House card| Interesting| 9.1 | +---------+-----------+--------------+-----------+对于上面的例子,则正确的输出是为:
+---------+-----------+--------------+-----------+ | id | movie | description | rating | +---------+-----------+--------------+-----------+ | 5 | House card| Interesting| 9.1 | | 1 | War | great 3D | 8.9 | +---------+-----------+--------------+-----------+解答:
select * from cinema where id%2<>0 and description<>'boring' order by rating desc官方题解里使用了mod(id, 2) = 1也可以 小tips:在sql语句中,不等于的表达尽量写为<>而不是!=