sql - 根据玩过的游戏计算玩家排名

Question

我需要显示一个图表，其中可以显示游戏、分数、历史排名、每周排名、与 friend 的排名。

我有两个表:
1) high_scores (playerid, gameid, score, time(timestamp))
2) 好友(playerid, friendid)

我想知道如何使用最少数量的查询来做到这一点。

我正在为我的游戏网站使用 PHP 和 MySQL。

Answer 1

可以按如下方式对其进行查询:

SELECT
    gamescores.gameid,
    COUNT(*)+1 AS rank,
    playergamescores.total,
    gamename,
    foldername
FROM (
    SELECT gameid, playerid, SUM( score ) AS total, time
    FROM high_scores
    GROUP BY gameid, playerid
    ORDER BY gameid, total DESC
) AS gamescores
INNER JOIN
(
    SELECT gameid, SUM(score) AS total
    FROM high_scores
    WHERE playerid = 361822
    GROUP BY gameid
    ORDER BY total DESC
) AS playergamescores
ON playergamescores.gameid = gamescores.gameid
INNER JOIN gamemaster
ON gamescores.gameid = gamemaster.gameid
WHERE gamescores.total > (
    SELECT SUM( score ) AS total
    FROM high_scores
    WHERE gamescores.gameid = gameid
    AND playerid = 361822                       
)
GROUP BY gamescores.gameid
ORDER BY gamescores.time DESC

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