Question

我是存储过程的新手，所以我真的需要一些帮助。我试图修改一个sp来显示所有记录，如果参数为null，如果它不为null，则有另一个查询要运行它。我得到的是错误Procedure of function expects parameter @marketid which was not supplied。有人可以帮我解决这个问题吗？

ALTER  procedure [dbo].[sp_GetProductDetailsForMarket]
@marketid int

as

IF @marketid IS NOT NULL
begin
SELECT 
p.ProductID, p.pagenumber,p.ProductName,p.Description,p.CategoryID,
   p.ItemNumber,p.Price,p.AlertFrequency,p.PrimaryImageName,
   p.DeletionStateCode,p.Published,p.SearchTerms,p.ThumbNailPath,
   p.UOMName,p.HCPCCode,
   m.marketname,mm.MarketID,
   pa.AttributeID,pa.AttributeValueID,pa.Price as AttributePrice,
   pa.ImagePath,pa.ProductAttributeAssociationID,pa.IsOptional,
   av.[Name] as AttributeValueName,a.[Name] as AttributeName

FROM vPanel_Product p 
INNER JOIN vPanel_MarketMappings mm
        on p.productid=mm.productid
LEFT JOIN vPanel_Market m
        on m.marketid=mm.marketid
LEFT JOIN vPanel_ProductAttributeAssociation pa
       on p.productid = pa.productid
        and pa.deletionstatecode=0
LEFT JOIN vPanel_Attributes a
        on a.AttributeID = pa.AttributeID
        and a.deletionstatecode=0
LEFT JOIN vPanel_AttributeValues av
        on av.attributeValueID = pa.attributeValueID
        and av.deletionstatecode=0
WHERE m.marketid = @marketid
order by p.productname,A.ATTRIBUTEID,AV.ATTRIBUTEVALUEID
end

ELSE 

begin
SELECT 
p.ProductID, p.pagenumber,p.ProductName,p.Description,p.CategoryID,
   p.ItemNumber,p.Price,p.AlertFrequency,p.PrimaryImageName,
   p.DeletionStateCode,p.Published,p.SearchTerms,p.ThumbNailPath,
   p.UOMName,p.HCPCCode,
   pa.AttributeID,pa.AttributeValueID,pa.Price as AttributePrice,
   pa.ImagePath,pa.ProductAttributeAssociationID,pa.IsOptional,
   av.[Name] as AttributeValueName,a.[Name] as AttributeName

FROM vPanel_Product p 
LEFT JOIN vPanel_ProductAttributeAssociation pa
       on p.productid = pa.productid
        and pa.deletionstatecode=0
LEFT JOIN vPanel_Attributes a
        on a.AttributeID = pa.AttributeID
        and a.deletionstatecode=0
LEFT JOIN vPanel_AttributeValues av
        on av.attributeValueID = pa.attributeValueID
        and av.deletionstatecode=0
WHERE @marketid IS NULL
ORDER BY p.productname,A.ATTRIBUTEID,AV.ATTRIBUTEVALUEID
end

Answer 1

您的问题不在您的存储过程中。您的问题是您的调用应用程序没有传入参数。如果您愿意，可以将其默认为null，如下所示：

ALTER  procedure [dbo].[sp_GetProductDetailsForMarket]
@marketid int = NULL

或者，您可以随时将其传入，null或不传入。

Answer 2

将默认值添加到输入参数，即 NULL

ALTER  procedure [dbo].[sp_GetProductDetailsForMarket]
@marketid int = NULL

所以当你打电话给你的存储过程时：

exec sp_GetProductDetailsForMarket

它不会显示错误，因为输入参数 @marketid 的默认值现在设置为 NULL

存储过程检查参数是否为NULL

2 个答案: