MySQL查詢定製的功能

Question

排序可以說我有一個具有以下字段名稱

'id' 'likes' 'rating' 'view' 

一個正常的MySQL的排序將需要一個表的簡單

SELECT * FROM $table ORDER BY likes DESC, rating DESC, view DESC 

現在可以說，我會想通過任意函數訂購我的表中的給定條目

function custom_sort(likes, rating, view) { 
    fame = 0.5 * like + 0.25 * rating - view; 
    return fame; 
} 

我想知道是否有可能做這個僞代碼類似行動

SELECT * FROM $table ORDER BY custom_sort(likes, rating, view) DESC 

Answer 1

如何簡單...

SELECT * FROM $table ORDER BY (0.5 * likes + 0.25 * rating - view) DESC