我有一个存储过程,如下所示:
ALTER PROCDURE [dbo].[zsp_selectallupceans_listProduction]
(@UPCList NVARCHAR(4000),
@EANList NVARCHAR(4000),
@Type TINYINT)
AS
SELECT
dd.UPC, dd.EAN, dd.EBAYID AS ItemID
FROM
ThirdPartyData AS dd
WHERE
EXISTS (SELECT 1 FROM dbo.SplitStringProduction(@UPCList,',') S1
WHERE dd.UPC = S1.val)
OR EXISTS (SELECT 1 FROM dbo.SplitStringProduction(@EANList,',') S2
WHERE dd.EAN = S2.val)
AND dd.Type = @Type
参数传递如下:
@UPCList='709127309019',
@EanList='0709127309019',
@Type=4
“ SplitStringProduction”函数如下所示:
ALTER FUNCTION [dbo].[SplitStringProduction]
(@string NVARCHAR(MAX),
@delimiter NVARCHAR(5))
RETURNS @t TABLE
(
val NVARCHAR(500)
)
AS
BEGIN
DECLARE @xml XML
SET @xml = N'<root><r>' + replace(@string,@delimiter,'</r><r>') + '</r></root>'
INSERT INTO @t(val)
SELECT
r.value('.','varchar(500)') AS item
FROM
@xml.nodes('//root/r') as records(r)
RETURN
END
现在,当我从表中进行简单选择时,如下所示:
select *
from thirdpartydata dd
where dd.UPC = '709127309019' -- note this is one of the parameters passed to the stored procedure...
在列Type
设置为“ 1”的情况下,我只会得到1个结果。...
现在,当我尝试存储过程时:
exec zsp_selectallupceans_listProduction '709127309019','0709127309019',4
即使我不应该得到任何结果,我仍然会得到1个结果,因为如果您可以看到“ Type”参数设置为4,那么就找不到匹配的记录。...
我在这里做错了什么,我似乎无法弄清楚??
答案 0 :(得分:2)
您需要将OR
条件括在括号内:
WHERE (
EXISTS (SELECT 1 FROM dbo.SplitStringProduction(@UPCList,',') S1 WHERE dd.UPC=S1.val)
OR EXISTS (SELECT 1 FROM dbo.SplitStringProduction(@EANList,',') S2 WHERE dd.EAN=S2.val)
) AND dd.Type = @Type
没有他们,您的查询是这样的:
WHERE EXISTS (...)
OR (EXISTS (...) AND dd.Type = @Type)
得到的结果是因为第一个OR条件匹配。