MSSQL 判断一个时间段是否在另一个时间段内!

MSSQL 判断一个时间段是否在另一个时间段内!

 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 --查询开始时间
11 DECLARE @EndTime datetime --查询结束时间
12 DECLARE @MeetingRoom INT --查询的会议室
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)     --解决结束时间和开始时间相同的冲突
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