我试图在查询中插入一个 where 子句以仅选择某些行。
这是查询:
SELECT m.MapName, SEC_TO_TIME(TRUNCATE(t.Time,3)) AS Time, p.User
FROM times t INNER JOIN
maps m INNER JOIN
players p
ON t.MapID = m.MapID INNER JOIN
(SELECT t.MapId, MIN(t.time) as time
FROM times t
GROUP BY t.MapId
) tmin
ON tmin.MapId = t.MapId and tmin.time = t.time and p.PlayerID = t.PlayerID;
我想做的是添加一个 WHERE 子句,也只选择表 times< 中
.style
= 0 和 type
= 0 的时间
当前运行的查询总是以以下形式返回:
MapName: Time: PlayerID:
map_name 00:00:09.440 player_name1
map_name2 xx:xx:xx:xxx player_name2
map_name3 xx:xx:xx:xxx player_name3
如果这有帮助,times
表的布局如下所示:
MapID: Type: Style: Time:
1 0 0 214.235
2 1 0 12.325
3 0 1 321.333
我想做的是与上面相同的查询,但只选择 type
和 style
为 0 的时间。
最佳答案
试试这个:
SELECT m.MapName, SEC_TO_TIME(TRUNCATE(t.Time,3)) AS Time, p.User
FROM times t
INNER JOIN maps m ON t.MapID = m.MapID
INNER JOIN players p ON p.PlayerID = t.PlayerID
INNER JOIN (SELECT t.MapId, MIN(t.time) as time
FROM times t
WHERE t.style = 0 and t.type = 0
GROUP BY t.MapId
) tmin ON tmin.MapId = t.MapId and tmin.time = t.time;
关于mysql - 我应该把 where 子句放在这个查询的什么地方来过滤结果?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/27738375/