根据下一个创建的记录创建日期，更新为空的end_dt列
[英]update a end_dt column which is null based on next created record created date
问题描述
Example: 
例：
update a end_dt column which is null based on next created record created date 根据下一个创建的记录创建日期，更新为空的end_dt列
CURRENT SITUTAION: 当前情况：
CUST_ID CREATED_DT END_DT
1 3/25/2013 6:51:33 PM
1 3/25/2013 6:23:58 PM
1 3/25/2013 5:02:07 PM
1 3/12/2013 9:18:21 AM
1 3/8/2013 12:47:13 PM
1 1/25/2013 7:24:02 AM
1 1/23/2013 11:26:31 AM
1 11/13/2012 8:55:31 AM
NEEDED: 需要：
CUST_ID CREATED_DT END_DT
1 3/25/2013 6:51:33 PM
1 3/25/2013 6:23:58 PM 3/25/2013 6:51:33 PM
1 3/25/2013 5:02:07 PM 3/25/2013 6:23:58 PM
1 3/12/2013 9:18:21 AM 3/25/2013 5:02:07 PM
1 3/8/2013 12:47:13 PM 3/12/2013 9:18:21 AM
1 1/25/2013 7:24:02 AM 3/8/2013 12:47:13 PM
1 1/23/2013 11:26:31 AM 1/25/2013 7:24:02 AM
1 11/13/2012 8:55:31 AM 1/23/2013 11:26:31 AM
1 个解决方案
解决方案1
1 已采纳 2013-04-03 11:53:14
Assuming SQL Server: 假设SQL Server：
UPDATE c
SET END_DT=(SELECT TOP 1 CREATED_DT FROM CustDates WHERE CUST_ID=c.CUST_ID AND
CREATED_DT>c.CREATED_DT ORDER BY CREATED_DT)
FROM CustDates c
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