SQL查詢未獲取值

我正在嘗試使用SP獲取值。查詢如下。SQL查詢未獲取值

create proc [dbo].[GetOrdersByUserID11]  
( 
@UserID int  
)  
as  
begin  
declare @status varchar(1000) 

set @status=' select a.*, b.CategoryText, Cast('''' as Varchar(10)) as SectionsViewed, PurchasedDate as dateadded into #myCourses1 from dbo.Tbl_CourseInformations a JOIN Tbl_Categories b ON a.AssignCategory = b.CategoryID ' 
set @[email protected]+' Join Tbl_Orders c ON c.UserID = '+convert(varchar(10),@UserID)+'' 

set @[email protected]+'Order By CategoryText, CourseTitle ' 

print @status 

exec(@status) 

select * from #myCourses1 

end 

This is message from my query when run my SP[[dbo].[GetOrdersByUserID11] 5085 ]: 


select a.*, b.CategoryText, Cast('' as Varchar(10)) as SectionsViewed, PurchasedDate as dateadded into #myCourses1 from dbo.Tbl_CourseInformations a JOIN Tbl_Categories b ON a.AssignCategory = b.CategoryID Join Tbl_Orders c ON c.UserID = 5085 

(99 row(s) affected)

我得到的消息99行受到影響，但在我的結果中只獲得帶有0（零）列的標題。

Plz確實幫助我獲得價值。

在此先感謝。

來源

2011-05-16 user755716

您創建的臨時表是隻在EXEC語句，而不是外部查詢的範圍。

exec('select 1 as f into #t') 
select * from #t' <-- out of scope

選擇語句中：

exec('select 1 as f into #t; select * from #t')

或者先創建臨時表（因此創建/選擇是相同的範圍內）。

select 1 as f into #t where 0=1 --force empty 
exec('insert #t values (2)') 
select * from #t

來源

2011-05-16 13:51:46

+1。它有時比第一次看起來更棘手 – 2011-05-16 14:02:55

我真的不明白你爲什麼首先把你的查詢放在一個字符串變量中。下面的查詢是否滿足您的需求？

create proc [dbo].[GetOrdersByUserID11]  
( 
    @UserID int  
)  
AS  
BEGIN 

SELECT a.*, b.CategoryText, Cast("" as Varchar(10)) as SectionsViewed, 
    PurchasedDate as dateadded 
FROM dbo.Tbl_CourseInformations a 
    JOIN Tbl_Categories b ON a.AssignCategory = b.CategoryID 
    JOIN Tbl_Orders c ON c.UserID = convert(varchar(10),@UserID) 
ORDER By CategoryText, CourseTitle 

END

調用存儲過程：

EXEC GetOrdersByUserID11(1234);

來源

2011-05-16 13:48:54

感謝您對我的reply.In查詢我需要補充一些條件這個字符串。如果這是執行我會添加後 – user755716 2011-05-16 13:51:05

+1; 'SectionsViewed'也很奇怪;它將永遠是'''' – 2011-05-16 13:52:12

是的，請張貼條件。我很好奇，如果我們可以添加該條件而不必將查詢放入字符串變量中。儘量避免這種情況:) – 2011-05-16 13:52:46

你的最後一句話是選擇數據到臨時表，而不是正在被返回的結果集。如果你添加以下到你的過程結束時，你應該把你的數據：

select * from #myCourses1

來源

2011-05-16 13:49:44 Mike

爲什麼在存儲過程中構建select請求？根據我的理解你的要求，你只需要結果。在這種情況下，您最好在呼叫中使用帶有參數的視圖。

CREATE VIEW [dbo].[GetOrdersByUserID11] 
AS 
SELECT a.*, b.CategoryText, Cast('' as Varchar(10)) as SectionsViewed, PurchasedDate as dateadded into #myCourses1 from dbo.Tbl_CourseInformations a JOIN Tbl_Categories b ON a.AssignCategory = b.CategoryID 

GO

你這樣稱呼它：

SELECT * FROM GetOrdersByUserID11 Join Tbl_Orders c WHERE c.UserID = 5085

來源

2011-05-16 13:56:57 Muffun

SQL查詢未獲取值

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