Question

我想问你，如果我在SELECT COUNT（*）

中使用这个ORDER BY是正确的

Orginal: SELECT count(*) AS cnt FROM players WHERE totalpoints>?    

Modified: SELECT count(*) AS cnt FROM players WHERE totalpoints>? ORDER BY timeontheserver DESC

在原始查询中，它输出给定的玩家＆＃34; rank＆＃34;在数据库中。

但我只注意到一些＆＃34;球员＆＃34;有相同数量的积分，他们有点逆转。所以它应该给予玩家更高的＆＃34; timetheserver＆＃34;更好＆＃34;排名＆＃34;。我希望你能理解这一点，谢谢。

Answer 1

COUNT（*）会为您提供一个号码，您希望在您订购的字段上进行分组，以获得您想要的内容。

SELECT timeontheserver ,count(*) AS cnt FROM players 
WHERE totalpoints>? GROUP BY timeontheserver  ORDER BY timeontheserver DESC

SELECT count（*）with ORDER BY

1 个答案: