php - Mysql 某一用户多列的Rank

Question

如何根据一个查询中其他人的统计数据来查找某个用户的三个统计数据的排名？

喜欢

用户 -> 艾伦
等级 -> 25(等级 3)
胜利 -> 347(排名 1)
损失 -> 2(排名 145)

这就是我所拥有的

function get_rank($what,$user) {
$v = mysql_query("
    SELECT username, @curRank := @curRank + 1 AS rank FROM `users`,
    (SELECT @curRank := 0) r
    WHERE id = '".$user."' ORDER BY `".$what."`");
    $a = mysql_fetch_array($v);
        return $v['rank'];
}

它永远不会起作用。

表结构

Id    Username    level    wins    losses

1     Alan        25        347     2

2     Joe         34        100     4

3     Sam         12        600     12

谢谢。

Answer 1

SELECT * FROM
(SELECT m.name,rank_level,rank_win  ,rank_loss
FROM 
    (SELECT @rank := @rank + 1 AS rank_level,name,id FROM users ORDER BY level DESC) m 
    inner join  (SELECT @rankw := @rankw + 1 AS rank_win,name,id 
        FROM users ORDER BY win DESC) w on m.id=w.id 
    inner join  (SELECT @rankl := @rankl + 1 AS rank_loss,name,id 
        FROM users ORDER BY loss DESC) l on m.id=l.id 
     , (SELECT @rank := 0) m2,(SELECT @rankw := 0) w2,(SELECT @rankl := 0) l2
) k
WHERE k.name= 'Alan';

SQL FIDDLE HERE