php - 随机化特定组mysql

Question

所以我有这行代码：

$results = mysql_query('
    SELECT * 
    FROM members 
    WHERE category1="Photographers" 
    ORDER BY premium DESC, featured DESC, company ASC');

一切都很好，高级会员出现在精选之上。推荐在普通会员之上，他们都是按字母顺序排列的。但是，我希望特色成员显示在常规成员之上，但随机而不是按字母顺序显示。我试过 RAND() 但它随机化了我所有的成员，请帮忙。

Answer 1

SELECT * 
FROM members 
WHERE category1="Photographers" 
ORDER BY 
    premium DESC, 
    featured DESC, 
    CASE WHEN featured = 1 THEN RAND() ELSE company END ASC

Answer 2

您可以在 ORDER BY 中使用 CASE，例如

SELECT * 
FROM members 
WHERE category1="Photographers" 
ORDER BY CASE WHEN Featured = 1 THEN 0 ELSE 1 END, Rand()