使用MYSQL创建一个随机数 [英] creating a random number using MYSQL

问题描述

我想知道有没有一种方法可以选择随机产生的100到500之间的数字以及选择查询.

I would like to know is there a way to select randomly generated number between 100 and 500 along with a select query.

例如:SELECT name, address, random_number FROM users

我不必将此数字存储在db中，仅用于显示目的.

I dont have to store this number in db and only to use it to display purpose.

我尝试过类似的方法，但是无法正常工作.

I tried it something like this, but it can't get to work..

SELECT name, address, FLOOR(RAND() * 500) AS random_number FROM users

希望有人帮助我. 谢谢

Hope someone help me out. Thank you

推荐答案

这应该提供您想要的内容:

This should give what you want:

FLOOR(RAND() * 401) + 100

通常，FLOOR(RAND() * (<max> - <min> + 1)) + <min>生成一个介于>和<max>之间的数字.

Generically, FLOOR(RAND() * (<max> - <min> + 1)) + <min> generates a number between <min> and <max> inclusive.

更新

此完整的声明应该起作用:

This full statement should work:

SELECT name, address, FLOOR(RAND() * 401) + 100 AS `random_number` 
FROM users

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