mysql - 用于排序排行榜的 SQL 查询

Question

如果我们有表，排行榜最有效的 SQL 查询是什么:

[UserID], [Points]

我希望结果按积分和排名列排序。

Answer 1

在 SQL Server 2008 中，您可以使用 Ranking functions :

SELECT UserId,
       Points,
       RANK() OVER(ORDER BY Points DESC) AS Rank
FROM LeaderBoards
ORDER BY Points DESC

A MySql rank could be something like this:

SELECT UserId,
       Points,
       @curRank := @curRank + 1 AS Rank
FROM LeaderBoards l, (SELECT @curRank := 0) r
ORDER BY Points DESC