的SQL Server 2005 - 多部分組成的標識符無法綁定

Question

此代碼：

USE [db] 
GO 
/****** Object: UserDefinedFunction [dbo].[GetFieldPickerReports] Script Date: 01/11/2013 19:12:27 ******/ 
SET ANSI_NULLS ON 
GO 
SET QUOTED_IDENTIFIER ON 
GO 

ALTER FUNCTION [dbo].[GetFieldPickerReports] (@CustomerName varchar(100)) 
RETURNS TABLE 
AS 
    RETURN SELECT [fpr].[ID], [fpr].[Name], [fpr].[Global], [fpr].[FPRCategoryID] 
    FROM FieldPickerReport fpr, dbo.GetProductKeyIdByCustomer(@CustomerName) pk 
    LEFT JOIN [FPRCategory] fprcat on ([fpr].[FPRCategoryID]=[fprcat].[ID]) 
    WHERE [Global]=1 OR ProductKeyID=pk.id 

產生一個錯誤：

The multi-part identifier "fpr.FPRCategoryID" could not be bound.

該查詢作品，未經Left Join（這是我目前需要添加）或者刪除dbo.GetProductKeyIdByCustomer()和Where條款。

下面是dbo.GetProductKeyIdByCustomer()

USE [db] 
GO 
/****** Object: UserDefinedFunction [dbo].[GetProductKeyIdByCustomer] Script Date: 01/11/2013 19:58:34 ******/ 
SET ANSI_NULLS ON 
GO 
SET QUOTED_IDENTIFIER ON 
GO 

ALTER FUNCTION [dbo].[GetProductKeyIdByCustomer] (@CustomerName varchar(100)) 
RETURNS TABLE 
AS 
    RETURN SELECT id 
    FROM ProductKey 
    WHERE [CustomerName]=@CustomerName AND Enabled=1 

有什麼不對我的查詢代碼？

Answer 1

首先，我認爲這些UDF可以更好地實現爲視圖。

其次，您正在混合隱式和顯式連接。使用所有顯式連接應該可以解決您的問題：

SELECT 
    [fpr].[ID], 
    [fpr].[Name], 
    [fpr].[Global], 
    [fpr].[FPRCategoryID] 
FROM 
    FieldPickerReport fpr 
    JOIN dbo.GetProductKeyIdByCustomer(@CustomerName) pk 
     ON [Global] = 1 OR ProductKeyID = pk.id 
    LEFT JOIN FPRCategory fprcat 
     ON fpr.FPRCategoryID = fprcat.ID