如何創建排名系統

Question

我有一個用戶表user_score列在視圖方面我想顯示每個用戶的排名和得分和2人之前/之後。

我該如何用MySQL或PHP以最少的執行時間來實現？

例如

+-----------+------------+ 
| User_id | Score  | 
+-----------+------------+ 
| 1   | 12258  | 
| 2   | 112  | 
| 3   | 9678  | 
| 4   | 689206  | 
| 5   | 1868  | 
+-----------+------------+ 

例如我user_id = 3。我想說明這樣

    you 
        9678  

user befor you    user after you 
    12258       1868  

Answer 1

如果你想使用，僅在MySQL：

SELECT usr中。 user_id，（SELECT USR1。user_score FROM user USR1 WHERE USR。user_score> = USR1。user_score AND USR。user_id！= USR1。user_id ORDER BY USR1。user_score DESC LIMIT 1）AS user_before_you，USR。 user_score AS you，（選擇USR1。user_score FROM user USR1 WHERE usr中。user_score < = USR1。user_score和USR。user_id！= USR1。user_id ORDER BY USR1。user_score ASC LIMIT 1）user_after_you FROM user USR WHERE 1