Question

我正在尝试使用SP获取值。查询如下。

 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 @status=@status+' Join Tbl_Orders c ON c.UserID = '+convert(varchar(10),@UserID)+''

 set @status=@status+'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)

我收到消息99行受影响但在我的结果中只获得了带有0（零）列的标题。

Plz帮助我获得价值。

提前致谢。

Answer 1

您创建的临时表仅在EXEC语句的范围内，而不是外部查询。

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

在声明中选择：

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

或者首先创建临时表（因此创建/选择在同一范围内）。

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

Answer 2

我真的不明白为什么你先把查询放在一个字符串变量中。下面的查询是否满足您的需求？

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

调用存储过程：

EXEC GetOrdersByUserID11(1234);

Answer 3

您的上一条语句是将数据选择到临时表而不是正在返回的结果集中。如果您在程序结束时添加以下内容，则应获取数据：

select * from #myCourses1

Answer 4

为什么要在商店流程中构建select请求？据我了解您的要求，您只需要结果。在这种情况下，最好在调用中使用带参数的视图。

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

你这样称呼它：

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

SQL Query没有获取值

4 个答案: