存儲過程鑄造錯誤

我有奇怪的問題有以下SP：存儲過程鑄造錯誤

CREATE PROCEDURE [dbo].[Manufacturer_GetProductsCountByManufacturedId] 
(
    @ManufacturerIds NVARCHAR(MAX) = '', 
    @ExcludeType INT 
) 
AS 
BEGIN 
    DECLARE @ManufacturerId NVARCHAR(MAX) 
    DECLARE @GoodManufacturerIds NVARCHAR(MAX) = '' 
    DECLARE @result BIGINT 
    DECLARE @pos INT 
    DECLARE @len INT 

    SET @GoodManufacturerIds = '' 
    SET @pos = 0 
    SET @len = 0 

    WHILE CHARINDEX(',', @ManufacturerIds, @pos + 1)>0 
    BEGIN 
     -- Split 
     SET @len = CHARINDEX(',', @ManufacturerIds, @pos+1) - @pos 
     SET @ManufacturerId = SUBSTRING(@ManufacturerIds, @pos, @len) 

     -- Check 
     SELECT TOP 1 @result = p.ProductId 
     FROM [MYDB].[dbo].[Product] p 
     INNER JOIN [MYDB].[ProductTyping].[TypedProductFieldValue] tpfv ON tpfv.ProductId = p.ProductId 
     WHERE ManufacturerId = @ManufacturerId 
     AND tpfv.ProductTypeId <> @ExcludeType  

     IF @result > 0 
      SET @GoodManufacturerIds = @GoodManufacturerIds + @ManufacturerId + ',' 
     SET @pos = CHARINDEX(',', @ManufacturerIds, @[email protected])+1 
    END 
    -- Last comma kaputt 
    SET @GoodManufacturerIds = LEFT(@GoodManufacturerIds, LEN(@GoodManufacturerIds) - 1) 

    RETURN @GoodManufacturerIds 
END

基本上我有分裂與逗號分隔值的字符串併爲每個這些值，我執行查詢，並把導致另一個逗號分隔的字符串。（「5220,3008,1561,2678，」和）我得到一個錯誤，「無法強制轉換nvarchar值'5220,3008,1561,2678'鍵入int「。但如果我建於這些值在存儲過程爲：

DECLARE @ManufacturerId NVARCHAR(MAX) 
    DECLARE @GoodManufacturerIds NVARCHAR(MAX) = '' 
    DECLARE @result BIGINT 
    DECLARE @pos INT 
    DECLARE @len INT 

    -- test 
    DECLARE @ManufacturerIds NVARCHAR(MAX) = '' 
    DECLARE @ExcludeType INT  
    SET @ManufacturerIds = '5220,3008,1561,2678,13715,5047,' 
    SET @ExcludeType = 5 

    SET @GoodManufacturerIds = '' 
    SET @pos = 0 
    SET @len = 0 

    WHILE CHARINDEX(',', @ManufacturerIds, @pos + 1)>0 
    BEGIN 
     -- Split 
     SET @len = CHARINDEX(',', @ManufacturerIds, @pos+1) - @pos 
     SET @ManufacturerId = SUBSTRING(@ManufacturerIds, @pos, @len) 

     -- Check 
     SELECT TOP 1 @result = p.ProductId 
     FROM [MYDB].[dbo].[Product] p 
     INNER JOIN [MYDB].[ProductTyping].[TypedProductFieldValue] tpfv ON tpfv.ProductId = p.ProductId 
     WHERE ManufacturerId = @ManufacturerId 
     AND tpfv.ProductTypeId <> @ExcludeType  

     IF @result > 0 
      SET @GoodManufacturerIds = @GoodManufacturerIds + @ManufacturerId + ',' 
     SET @pos = CHARINDEX(',', @ManufacturerIds, @[email protected])+1 
    END 
    -- Last comma kaputt 
    SET @GoodManufacturerIds = LEFT(@GoodManufacturerIds, LEN(@GoodManufacturerIds) - 1) 

    RETURN @GoodManufacturerIds

一切正常，我得到了我的新的字符串。我不知道錯誤可能在第一個過程中，任何提示？

來源

2015-02-12 Ras

爲什麼不使用數據類型*設計*來保存多個值，如XML或表格，而不是將所有內容填充到字符串中？ – 2015-02-12 08:29:56

您好t-clausen.dk，我已經使用正確的語法高亮更新了帖子，現在您可以看到「<>」 – Ras 2015-02-12 08:41:31

我發現了錯誤，我使用的是RETURN，但RETURN是用於整數值的，在這種情況下，mine是一個字符串，因此將SELECT設置爲一切正常。

來源

2015-02-12 08:51:30 Ras

存儲過程鑄造錯誤

回答

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