我想按随机排序[重复]

Question

这是我显示数据库产品的代码行，但我想每次都随机显示。

代码：

$products = DB::select("SELECT * FROM products ORDER BY category = 75 DESC LIMIT 4");

Answer 1

只需使用RAND()随机订购；

$products = DB::select("SELECT * FROM products where category = 75 ORDER BY RAND() LIMIT 4");

Answer 2

您为什么按类别订购 = 75？你是说where category = 75？

你可以使用ORDER BY RAND():

$products = DB::select("SELECT * FROM products ORDER BY RAND() LIMIT 4");

但您可能会遇到一些性能问题。