php - 从 Mysql 获取随机值

Question

如何获取随机用户名。

SELECT a.mod_name, u.user_name, a.id from type a, users u 
WHERE a.id=u.mod_type
ORDER BY mod_type Desc ";

Answer 1

您可以ORDER BY RAND()为此使用：

SELECT a.mod_name, u.user_name, a.id
FROM type a, users u
WHERE a.id=u.mod_type
ORDER BY RAND()

Answer 2

关于什么

编辑：

select a.mod_name, u.user_name, a.id from type a, users u where a.id=u.mod_type 
order by mod_type DESC, rand();

?

Answer 3

Mysql支持RAND()函数

 select a.mod_name, u.user_name, a.id from type a,
 users u where a.id=u.mod_type
 order by RAND(),mod_type Desc ";