IF OBJECT_ID('tempdb..#t') IS NOT NULL DROP TABLE #t
CREATE TABLE #t(Movie varchar(10),Starttime TIME,EndTime time)
INSERT INTO #t(Movie,Starttime,EndTime)
SELECT 'Movie 1','11:00','13:00' UNION ALL
SELECT 'Movie 2','13:30','15:00' UNION ALL
SELECT 'Movie 3','15:30','16:00'
UPDATE t SET t.Starttime=p.EndTime
FROM #t AS t
CROSS APPLY(SELECT MAX(tt.EndTime) AS EndTime FROM #t AS tt WHERE DATEDIFF(MINUTE,tt.EndTime,t.Starttime)>0) p
WHERE p.EndTime IS NOT NULL
SELECT * FROM #t
Movie Starttime EndTime
---------- ---------------- ----------------
Movie 1 11:00:00.0000000 13:00:00.0000000
Movie 2 13:00:00.0000000 15:00:00.0000000
Movie 3 15:00:00.0000000 16:00:00.0000000
哪個版本你使用,如果你使用2012+ 你也可以使用LAG
SELECT *,LAG(EndTime)OVER(ORDER BY EndTime) AS NewStartTime FROM #t
Movie Starttime EndTime NewStartTime
---------- ---------------- ---------------- ----------------
Movie 1 11:00:00.0000000 13:00:00.0000000 NULL
Movie 2 13:30:00.0000000 15:00:00.0000000 13:00:00.0000000
Movie 3 15:30:00.0000000 16:00:00.0000000 15:00:00.0000000
我添加roomid爲採樣數據
IF OBJECT_ID('tempdb..#t') IS NOT NULL DROP TABLE #t
CREATE TABLE #t(ShowID int,RoomID int, Movie varchar(10),Starttime TIME,EndTime time)
INSERT INTO #t(ShowID,RoomId,Movie,Starttime,EndTime)
SELECT 1,1,'Movie 1','11:00','13:00' UNION ALL
SELECT 3,1,'Movie 2','13:30','15:00' UNION ALL
SELECT 4,1,'Movie 3','15:30','16:00' UNION ALL
SELECT 2,2,'Movie 3','12:30','14:30' UNION ALL
SELECT 5,2,'Movie 1','15:30','16:30'
SELECT *,LAG(EndTime)OVER(partition by RoomId ORDER BY EndTime) AS NewStartTime FROM #t
UPDATE t SET t.Starttime=isnull(p.NewStartTime,t.Starttime)
FROM #t AS t
inner join(
SELECT *,LAG(EndTime)OVER(partition by RoomId ORDER BY EndTime) AS NewStartTime FROM #t
) as p on t.ShowId=p.ShowId
select * FROM #t AS t
做了以下的結果是你想要的?
ShowID RoomID Movie Starttime EndTime
1 1 1 Movie 1 11:00:00 13:00:00
2 3 1 Movie 2 13:00:00 15:00:00
3 4 1 Movie 3 15:00:00 16:00:00
4 2 2 Movie 3 12:30:00 14:30:00
5 5 2 Movie 1 14:30:00 16:30:00
您能否提供將涉及一些示例數據的表的表結構? – Jason
我添加了表格的圖片。其他表格不相關。他們沒有影響查詢的信息。 (比如:餐廳和電影只有一個RoomID和一個FilmId) – Alegou20