MYSQL 判斷一個時間段是否在另一個時間段內。

[
1 CREATE TABLE #B
2 (
3 MeetingRoom int,
4 BeginTime datetime,
5 EndTime datetime
6 )
7 insert into #B
8 select 1,'2012-05-24 10:00:00','2012-05-24 16:00:00'
9
10 DECLARE @BeignTime datetime --查詢開始時間
11 DECLARE @EndTime datetime --查詢結束時間
12 DECLARE @MeetingRoom INT --查詢的會議室
13 SET @BeignTime='2012-05-24 00:00:00'
14 SET @EndTime='2012-05-24 17:00:00'
15 SET @MeetingRoom=1
16 SELECT @BeignTime=DATEADD(SECOND,1,@BeignTime) --解決結束時間和開始時間相同的沖突
17 SELECT CASE WHEN COUNT(1)>0 THEN '已占用' ELSE '未占用' END FROM #B WHERE
18 [(@BeignTime BETWEEN BeginTime AND EndTime OR
19 @EndTime BETWEEN BeginTime AND EndTime OR
20 BeginTime BETWEEN @BeignTime AND @EndTime OR
21 EndTime BETWEEN @BeignTime AND @EndTime)] AND MeetingRoom=@MeetingRoom
22 DROP TABLE #B
]