SQL函數不返回任何值

Question

我的SQL Server函數沒有返回任何值。 下面是我的腳本。請幫忙。 在此先感謝。

CREATE FUNCTION [dbo].[PreviousService](@Order int) 
RETURNS @rtTable TABLE 
(
     OrderId Int, 
     PreviousService Int, 
     CurrentService Int 
) 
AS 
BEGIN 
Declare @PreviousService Int, 
     @CurrentService Int 

DECLARE @resultTbl table (OrderId Int,PreviousService Int,CurrentService Int) 

Select Top 2 @PreviousService=II.ServiceId 
     From InvoiceItems II 
     Inner Join Invoices I On I.Id = II.InvoiceId 
     Inner Join Orders O On II.OrderId=O.OrderId 
     where II.ServiceId is not null And O.OrderId= @Order And I.InvoiceStatus = 20 
     Order By I.CreateDate Desc 
Select Top 1 @CurrentService=II.ServiceId 
From InvoiceItems II 
Inner Join Invoices I On I.Id = II.InvoiceId 
Inner Join Orders O On II.OrderId=O.OrderId 
where II.ServiceId is not null And O.OrderId=@Order And I.InvoiceStatus = 20 
Order By I.CreateDate Desc 

insert into @resultTbl 
Select O.OrderId,@CurrentService,@PreviousService 
From Orders O 
Where OrderId=@Order 
return; 
END 

Answer 1

你不要求@resultTbl，您可以插入到@rtTable直接

改變最後的INSERT語句

insert into @rtTable 
Select O.OrderId,@CurrentService,@PreviousService 
From Orders O 
Where OrderId=@Order