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Mysql怎么对字符串进行排序

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2020-12-14 16:40:28
栏目: 云计算
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Mysql怎么对字符串进行排序

Mysql对字符串进行排序的方法示例:

利用ORDER BY关键字进行排序。

语法:

SELECT column_name,column_name

FROM table_name

ORDER BY column_name,column_name ASC|DESC;

示例:

假设有一个Websites表数据如下:

+----+--------------+---------------------------+-------+---------+

| id | name | url | alexa | country |

+----+--------------+---------------------------+-------+---------+

| 1 | Google | https://www.google.cm/ | 1 | USA |

| 2 | 淘宝 | https://www.taobao.com/ | 13 | CN |

| 3 | 微博 | http://weibo.com/ | 20 | CN |

| 4 | Facebook | https://www.facebook.com/ | 3 | USA |

+----+--------------+---------------------------+-------+---------+

进行排序:

SELECT * FROM Websites ORDER BY alexa asc;//ASC为升序,DESC为降序,默认是升序

结果:

+----+--------------+---------------------------+-------+---------+

| id | name | url | alexa | country |

+----+--------------+---------------------------+-------+---------+

| 1 | Google | https://www.google.cm/ | 1 | USA |

| 5 | Facebook | https://www.facebook.com/ | 3 | USA |

| 2 | 淘宝 | https://www.taobao.com/ | 13 | CN |

| 4 | 微博 | http://weibo.com/ | 20 | CN |

+----+--------------+---------------------------+-------+---------+

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