Question

我正在尝试在SQL Server 2012中编写一个视图，我在其中计算一组事务的30天移动总和。

当前脚本：

SELECT CustNo, TransactionDate, TransactionAmount, SUM(TransactionAmount) 
        OVER (PARTITION BY CustNo ORDER BY TransactionDate) AS MovingAmount
FROM         dbo.TransactionData

数据集：

 CustNo     TransactionDate    TransactionAmount
 1111       5/7/2015           3,000
 1111       5/14/2015          3,000
 2222       5/17/2015          100
 1111       5/21/2015          3,000
 1111       5/28/2015          3,000
 3333       5/31/2015          11,000
 1111       6/10/2015          3,000

预期结果：

 CustNo     TransactionDate    TransactionAmount   MovingAmount
 1111       5/7/2015           3,000               12,000 
 1111       5/14/2015          3,000               12,000
 2222       5/17/2015          100                 100
 1111       5/21/2015          3,000               9,000
 1111       5/28/2015          3,000               6,000
 3333       5/31/2015          11,000              11,000
 1111       6/10/2015          3,000               3,000

其他尝试：

SELECT CustNo, TransactionDate, TransactionAmount, SUM(TransactionAmount) 
        OVER (PARTITION BY CustomerNumber ORDER BY TransactionDate, 
        BETWEEN TransactionDate AND DATEADD(day, 30, TransactionDate)) 
        AS MovingAmount
FROM         dbo.TransactionData

Answer 1

我假设你想要的结果的第一行中的12,000是一个拼写错误，它应该是3,000。如果我更正，您的第一个查询似乎工作正常，如果没有order by整个查询，很难看到：

创建并填充样本表（请在将来的问题中保存此步骤）

CREATE TABLE TransactionData ( CustNo int, TransactionDate date, TransactionAmount int ) INSERT INTO TransactionData(CustNo, TransactionDate, TransactionAmount) VALUES (1111, '2015-05-07', 3000), (1111, '2015-05-14', 3000), (2222, '2015-05-17', 100), (1111, '2015-05-21', 3000), (1111, '2015-05-28', 3000), (3333, '2015-05-31', 11000), (1111, '2015-06-10', 3000)

使用Tab Alleman对问题的解释，无法使用over子句，您需要使用相关的子查询：

SELECT CustNo, TransactionDate, TransactionAmount, (SELECT SUM(TransactionAmount) FROM dbo.TransactionData t1 WHERE t1.CustNo = t0.CustNo AND t1.TransactionDate >= t0.TransactionDate AND t1.TransactionDate <= DATEADD(DAY, 30, t0.TransactionDate)) As MovingAmount FROM dbo.TransactionData t0 ORDER BY CustNo, TransactionDate

结果：

CustNo TransactionDate TransactionAmount MovingAmount 1111 07.05.2015 00:00:00 3000 12000 1111 14.05.2015 00:00:00 3000 12000 1111 21.05.2015 00:00:00 3000 9000 1111 28.05.2015 00:00:00 3000 6000 1111 10.06.2015 00:00:00 3000 3000 2222 17.05.2015 00:00:00 100 100 3333 31.05.2015 00:00:00 11000 11000

You can see a live demo on rextester.

使用SQL Server 2012中的OVER子句30天移动总和

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