LeetCode 620. Not Boring Movies

题目

X city opened a new cinema, many people would like to go to this cinema. The cinema also gives out a poster indicating the movies’ ratings and descriptions.

Please write a SQL query to output movies with an odd numbered ID and a description that is not ‘boring’. Order the result by rating.

For example, table 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     |
+---------+-----------+--------------+-----------+

For the example above, the output should be:

+---------+-----------+--------------+-----------+
|   id    | movie     |  description |  rating   |
+---------+-----------+--------------+-----------+
|   5     | House card|   Interesting|   9.1     |
|   1     | War       |   great 3D   |   8.9     |
+---------+-----------+--------------+-----------+

题目大意:请输入一个SQL查询来输出带有奇数编号的ID和不是“无聊”的描述。按等级排序结果。

解题思路

直接写SQL 就好了
奇数用对2取余为1来表示即可

SELECT * FROM cinema WHERE id % 2 = 1 AND description != 'boring' ORDER BY rating DESC  

发现也可以这样表示取余

select * from cinema where mod(id, 2) = 1 and description != 'boring' order by rating DESC  



处身寒夜,把握星光。