2

使用以下数据库作为我的数据源：

CREATE DATABASE [COS Source]
GO

USE [COS Source]
GO

CREATE TABLE [Products](
    [INVENTORY_CODE] [nvarchar](50),
    [PRODCAT_CODE] [nvarchar](50),
    [LAST_COST] [int] NULL,
    [STOCK_IND] [nvarchar](255) NULL,
    CONSTRAINT piv PRIMARY KEY ([INVENTORY_CODE])
) 
GO

CREATE TABLE [Sales Header](
    [DOC_NUMBER] [nvarchar](50),
    [TRANSTYPE_CODE] [int] null ,
    [REP_CODE] [nvarchar](255) NULL,
    [CUSTOMER_NUMBER] [nvarchar](50) ,
    [TRANS_DATE] [datetime] NULL,
    [FIN_PERIOD] [datetime] NULL,
    CONSTRAINT shdc PRIMARY KEY ([DOC_NUMBER])
) 
GO

CREATE TABLE [Sales Line](
    [DOC_NUMBER] [nvarchar](50) FOREIGN KEY REFERENCES [Sales Header]([DOC_NUMBER]),
    [INVENTORY_CODE] [nvarchar](50) FOREIGN KEY REFERENCES Products([INVENTORY_CODE]),
    [QUANTITY] [float] NULL,
    [UNIT_SELL_PRICE] [int] NULL,
    [TOTAL_LINE_PRICE] [float] NULL,
    [LAST_COST] [int] NULL,
    CONSTRAINT sldcic PRIMARY KEY ([DOC_NUMBER],[INVENTORY_CODE])
) 
GO

CREATE TABLE [Purchases Headers](
    [SUPPLIER_CODE] [nvarchar](255) NULL,
    [PURCH_DOC_NO] [nvarchar](50),
    [PURCH_DATE] [datetime] NULL,
    CONSTRAINT phpdn PRIMARY KEY ([PURCH_DOC_NO])
) 
GO

CREATE TABLE [Purchases Lines](
    [PURCH_DOC_NO] [nvarchar](50) FOREIGN KEY REFERENCES [Purchases Headers]([PURCH_DOC_NO]),
    [INVENTORY_CODE] [nvarchar](50) FOREIGN KEY REFERENCES [Products]([INVENTORY_CODE]),
    [QUANTITY] [float] NULL,
    [UNIT_COST_PRICE] [float] NULL,
    [TOTAL_LINE_COST] [float] NULL,
    CONSTRAINT plpdc PRIMARY KEY ([PURCH_DOC_NO],[INVENTORY_CODE])
) 
GO

并使用以下数据库作为我的插入目的地：

CREATE DATABASE [COS Target]
GO

USE [COS Target]
GO

CREATE TABLE PRODUCT_DIM (
    Product_Key int IDENTITY(1,1),  
    Product_Old_Key varchar(255),
    Unit_Sale_Price decimal,
    CONSTRAINT pk_PRODUCT_DIM PRIMARY KEY (Product_Key) 
)
GO

CREATE TABLE CUSTOMER_SALES_FACT (
    Cust_Sales_Fact_Key int IDENTITY(1,1),
    Product_Key int,
    Cost_Of_Sales decimal,
    CONSTRAINT pk_CUSTOMER_SALES_FACT PRIMARY KEY (Cust_Sales_Fact_Key, Product_Key),
    CONSTRAINT Customer_Sale_Fact_Product_Key FOREIGN KEY (Product_Key) REFERENCES PRODUCT_DIM(Product_Key) ON DELETE CASCADE,
)
GO

我想计算每个的销售成本 (COS)[COS Source].dbo.[Sales Line]并将这个值插入到[COS Target].dbo.[CUSTOMER_SALES_FACT].Cost_Of_Sales. 计算每条销售线的销售成本的基本公式是：[COS Source].dbo.[Purchases Lines].[QUANTITY] * [COS Source].dbo.[Purchases Lines].[UNIT_COST_PRICE]，或者只是[COS Source].dbo.[Purchases Lines].[TOTAL_LINE_COST]。

该[Product_Dim]表使用以下查询填充：

Insert into dbo.PRODUCT_DIM 
(
    Product_Old_Key
    ,[Unit_Sale_Price]
)
Select distinct p.INVENTORY_CODE ,p.LAST_COST from [COS Source].dbo.Products as p
Join [COS Source].dbo.[Sales Line] as sl
on p.INVENTORY_CODE = sl.INVENTORY_CODE
Join [COS Source].dbo.[Sales Header] sh
on sl.DOC_NUMBER = sh.DOC_NUMBER
GO

到目前为止，我必须填充[COS Target].dbo.[CUSTOMER_SALES_FACT]但尚未完成的插入查询如下所示：

Insert into dbo.CUSTOMER_SALES_FACT
(     
      [Product_Key]     
      ,[Cost_Of_Sales]
)
Select Distinct targetProduct.Product_Key, null /*insert COS here*/from [COS Source].dbo.[Sales Line] as sl
Join [COS Source].dbo.[Sales Header] as sh
on sl.DOC_NUMBER = sh.DOC_NUMBER
Join [COS Source].dbo.Products as p
on p.INVENTORY_CODE = sl.INVENTORY_CODE
Join dbo.PRODUCT_DIM as targetProduct
on [COS Target].Product_Old_Key = p.INVENTORY_CODE
Join [COS Source].dbo.[Purchases Lines] pl
on p.INVENTORY_CODE = pl.INVENTORY_CODE
Join [COS Source].dbo.[Purchases Headers] as ph
on pl.PURCH_DOC_NO = ph.PURCH_DOC_NO
where ph.PURCH_DATE <= sh.TRANS_DATE
GO

理想情况下，我希望将计算出的 COS 放入用于填充的插入语句中[COS Target].dbo.[CUSTOMER_SALES_FACT]，但是问题在于每种产品存在多个购买行。因此，为了创建至少部分准确的 COS，我必须选择在销售行之前出现的采购行。意味着条件 

WHERE [COS Source].dbo.[Sales Header].[TRANS_DATE] >=  [COS Source].dbo.[Purchases Header].[PURCH_DATE]

满足。

我没有成功计算和插入 COS。

我使用的是 SQL Server 2008。这些表也有钱条目。

任何帮助将不胜感激！

4

1 回答 1

0

此处缺少的信息是：对于给定销售 (DOC_NUMBER) 中的给定 INVENTORY_CODE，包含此 INVENTORY_CODE 的最近一次购买是在何时进行的？

一种选择是创建一个辅助视图：

CREATE VIEW dbo.[Most Recent Purchase] AS

SELECT sl.DOC_NUMBER, sl.INVENTORY_CODE, MAX(PURCH_DATE) LATEST_PURCH_DATE
FROM [COS Source].dbo.[Purchases Lines] pl
JOIN [COS Source].dbo.[Purchases Headers] ph on pl.PURCH_DOC_NO=pl.PURCH_DOC_NO
JOIN [COS Source].dbo.[Sales Line] sl ON pl.INVENTORY_CODE = sl.INVENTORY_CODE 
JOIN [COS Source].dbo.[Sales Header] sh ON sh.DOC_NUMBER=sl.DOC_NUMBER
WHERE PURCH_DATE < sh.TRANS_DATE
GROUP BY sl.DOC_NUMBER, sl.INVENTORY_CODE

该视图现在将告诉您例如：

DOC_NUMBER INVENTORY_CODE LATEST_PURCH_DATE

1 123 2013-04-15

销售 1 ([Sales Header].DOC_NUMBER = 1) 包含一条 INVENTORY_ID=123 的销售行。在此次销售的 TRANS_DATE 之前最近一次购买 INVENTORY_ID=123 是在 2013 年 4 月 15 日。

现在尝试将此视图添加到您的连接中并从那里获取它。

于 2013-05-30T22:17:22.410 回答