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SQL问题,可能不是最困难的。通过t1.date加入不相关的表(在t2.startdate和t2.enddate之间)
我正在从一堆相关表连接的ID's - > easy进行查看。现在有一张桌子与其他所有人没有关系。 (BatchDates)
`ALTER VIEW [ECSUB].[FCT_Ext_Collection]
AS
SELECT sh.id AS idSubmissionHistory, dh.id, dd.id AS Description, sch.id AS idScoringHistory, sh.CreationDate, sh.UpdateDate, bd.id AS BatchDateID
FROM ECSUB.SubmissionHistory AS sh INNER JOIN EC.DocumentHistory AS dh ON sh.id = dh.idSubmissionHistory
LEFT OUTER JOIN ECSM.ScoringHistory AS sch ON sh.idScoringHistory = sch.id
LEFT OUTER JOIN EC.DocumentDescriptions AS dd ON dd.id = dh.Description
LEFT OUTER JOIN ECSUB.AddressBilling AS ab ON sh.id = ab.id
LEFT OUTER JOIN ECSUB.AddressPremise AS ap ON sh.id = ap.id
CROSS JOIN EC.BatchDates AS bd --ON sh.documentdate between .......
GO`
好了,我的主表“documentHistory”包含文件的日期,我必须定义在该批次下降。 每批有一个ID和startdate。一批总是一个月。
这将使它更容易理解,从BatchDates表中的数据:
id month startdate
1 2010-12-01 00:00:00.000 2010-12-01 00:00:00.000
1 2011-01-01 00:00:00.000 2010-12-01 00:00:00.000
1 2011-02-01 00:00:00.000 2010-12-01 00:00:00.000
2 2011-03-01 00:00:00.000 2011-03-01 00:00:00.000
2 2011-04-01 00:00:00.000 2011-03-01 00:00:00.000
2 2011-05-01 00:00:00.000 2011-03-01 00:00:00.000
3 2011-06-01 00:00:00.000 2011-06-01 00:00:00.000
3 2011-07-01 00:00:00.000 2011-06-01 00:00:00.000
3 2011-08-01 00:00:00.000 2011-06-01 00:00:00.000
4 2011-09-01 00:00:00.000 2011-09-01 00:00:00.000
4 2011-10-01 00:00:00.000 2011-09-01 00:00:00.000
4 2011-11-01 00:00:00.000 2011-09-01 00:00:00.000
5 2011-12-01 00:00:00.000 2011-12-01 00:00:00.000
5 2012-01-01 00:00:00.000 2011-12-01 00:00:00.000
5 2012-02-01 00:00:00.000 2011-12-01 00:00:00.000
6 2012-03-01 00:00:00.000 2012-03-01 00:00:00.000
6 2012-04-01 00:00:00.000 2012-03-01 00:00:00.000
6 2012-05-01 00:00:00.000 2012-03-01 00:00:00.000
7 2012-06-01 00:00:00.000 2012-06-01 00:00:00.000
7 2012-07-01 00:00:00.000 2012-06-01 00:00:00.000
7 2012-08-01 00:00:00.000 2012-06-01 00:00:00.000
8 2012-09-01 00:00:00.000 2012-09-01 00:00:00.000
8 2012-10-01 00:00:00.000 2012-09-01 00:00:00.000
8 2012-11-01 00:00:00.000 2012-09-01 00:00:00.000
9 2012-12-01 00:00:00.000 2012-12-01 00:00:00.000
9 2013-01-01 00:00:00.000 2012-12-01 00:00:00.000
9 2013-02-01 00:00:00.000 2012-12-01 00:00:00.000
10 2013-03-01 00:00:00.000 2013-03-01 00:00:00.000
10 2013-04-01 00:00:00.000 2013-03-01 00:00:00.000
10 2013-05-01 00:00:00.000 2013-03-01 00:00:00.000
etc...........
所以我需要根据documentdate去取batchID,因此我们使用的列currentMonth开始日期。
这样:... JOIN BatchDates其中documentDate是startDate.month(没有此之间)
我甚至不知道我是否需要一个连接,交叉连接,工会等...
在此先感谢! L
看起来不错!我会尝试并在此报告。谢谢!! – laurens 2012-03-01 22:43:35
好吧,这个作品魅力...还有内/外连接。谢谢 ! – laurens 2012-03-02 12:59:56