SQL Server查找开始时间和结束时间之间的时间段

SQL Server，如何从计划表中查找时间段，就像我需要输出第一列的结束时间和下一列的开始时间一样

 select 
    s, e,
    Max(cid)as c_id,
    ROW_NUMBER()OVER(order by CAST(s as datetime)) as row_id
 from classroom 
 where Room like '3310' and Days like '%T%' 
 group by s,e
 order by CAST(s as datetime)

例如：

s       e       c_id    row_id
------- ------- ------- ------
9:30    10:45   235     1
11:00   12:15   236     2
12:30   13:45   238     3
14:00   15:15   1415    4
15:30   16:45   273     5
17:00   18:15   270     6

我需要输出

10:45-11:00
12:15-12:30
13:45-14:00

---

谢谢，您可以在临时表中插入数据，然后查询该临时表

select s,e,Max(cid)as c_id,
    ROW_NUMBER()OVER(order by CAST(s as datetime))as row_id 
into #t
from classroom 
where Room like '3310' and Days like '%T%' 
group by s,e 
order by CAST(s as datetime)


select t1.e, t2.s
from #t t1 
    INNER JOIN #t t2 on t1.row_id + 1 = t2.row_id

---

如果你只想知道一节课结束和下一节课开始之间的时间间隔，请在Abhi的答案中添加

where t2.s>t1.e

。如果您需要最小大小的插槽，比如15分钟，请使用

where-DATEDIFF（mi，t1.e，t2.s）>15