Question

在存储过程中，我尝试使用函数。

以下代码：

SELECT TOP 4 
    refFeatured,
    [Type],
    [Order],
    fn_cms_featured_image(refFeatured,[Type],@refLanguage) AS FeaturedImage,
    fn_cms_featured_name(refFeatured,[Type],@refLanguage) AS Name 
FROM
    FEATURED
ORDER BY 
    [Order] ASC

我写了函数但没有工作。

'fn_cms_featured_image'不是可识别的函数名称。

发生上述错误。我哪里弄错了

函数是标量值函数。

ALTER FUNCTION [dbo].[fn_cms_featured_image] ( @iNumber int,@type nvarchar(20),@lang int )
RETURNS nvarchar(50)
AS
BEGIN
    DECLARE @image  nvarchar(100)

    IF @type ='Category'
        SET @image = (SELECT TOP 1 c.Icon FROM CATEGORY c WHERE c.Id=@iNumber)
    ELSE
        SET @image = (SELECT TOP 1 pl.DefaultImage FROM  PRODUCT_IMAGE_LOCALIZED pl WHERE  pl.refLanguage=@lang AND pl.refProduct=@iNumber)

    RETURN (@image)
END

Answer 1

在函数名称前面添加模式名称 [dbo]。。

＆＃xA;＆＃xA;

  SELECT TOP 4 refFeatured，＆＃xA ; [类型]，＆＃XA; [订单]，＆＃xA; [dbo] .fn_cms_featured_image（refFeatured，[Type]，@ refLanguage）AS FeaturedImage，＆＃xA; [dbo] .fn_cms_featured_name（refFeatured，[Type]，@ refLanguage）AS名称＆＃xA; FROM FEATURED＆＃xA; ORDER BY [Order] ASC＆＃xA;

＆＃xA;＆＃ xA;

看一下这篇文章：为什么在调用函数时必须使用模式前缀（dbo）？

＆＃XA;

Answer 2

应该在模式名称前面调用用户函数的名称。＆＃xA;尝试编写 SELECT dbo.fn_cms_featured_image（...

＆＃xA;

Answer 3

尝试

Select item from fn_cms_featured_image(refFeatured,[Type],@refLanguage) AS FeaturedImage

而非直接电话

fn_cms_featured_image(refFeatured,[Type],@refLanguage) AS FeaturedImage

Answer 4

-- While selecting function name IN select query always select dbo.function name.      
SELECT TOP 4 
    refFeatured, [Type], [Order],
    dbo.fn_cms_featured_image(refFeatured,[Type], @refLanguage) AS FeaturedImage,
    dbo.fn_cms_featured_name(refFeatured, [Type], @refLanguage) AS Name 
FROM  
    FEATURED 
ORDER BY 
    [Order] ASC

存储过程中的SQL函数不起作用

4 个答案: