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我正在尝试在 SQL Server 2012 中编写一个视图，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
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1 回答 1

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我假设您想要的结果的第一行中的 12,000 是一个错字，它应该是 3,000。如果我是正确的，您的第一个查询似乎工作正常，如果没有order by整个查询就很难看到：

创建和填充示例表（请在您以后的问题中保存我们这一步）

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)

与 Tab Alleman 对问题的解释一起使用 over 子句无法完成，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

您可以在 rextester 上看到现场演示。

于 2017-08-22T15:02:02.680 回答