SQL 함수에서 테이블을 반환하는 방법

Question

SQL 함수가 있는데 테이블을 반환하려고하지만 오류가 발생합니다. A RETURN statement with a return value cannot be used in this context. 여기

내 쿼리입니다 :

ALTER FUNCTION [dbo].[Fnc_GetParentCategories]-- 21 
    ( 
@catId int 
) 
    Returns table 

As 
Begin 

Declare @Table table(Id int identity(1,1),Category_Id int,ParentId int); 
declare @cid int; 
WITH x AS (    
SELECT a.Category_Id, a.ParentId    
FROM t_Category a    
WHERE a.Category_Id=@CatId -- enter dead node walking here    

UNION ALL    
SELECT b.Category_Id, b.ParentId    
FROM t_Category b    
JOIN x ON x.Category_Id =b.ParentId    
)    

    insert into @Table select * from x; 

return @Table 

end 

그리고 오류는 다음과 같습니다

A RETURN statement with a return value cannot be used in this context

Answer 1

--Transact-SQL 다중 문 테이블 반환 함수 구문

CREATE FUNCTION [ schema_name. ] function_name 
([ { @parameter_name [ AS ] [ type_schema_name. ] parameter_data_type 
    [ = default ] [READONLY] } 
    [ ,...n ] 
    ] 
) 
RETURNS @return_variable TABLE <table_type_definition> 
    [ WITH <function_option> [ ,...n ] ] 
    [ AS ] 
    BEGIN 
     function_body 
     RETURN 
    END 
[ ; ] 

귀하의 수정 기능

,693,210

Answer 2

귀하의 쿼리는 올바르지 않습니다

ALTER FUNCTION [dbo].[Fnc_GetParentCategories]-- 21 
(
    @catId int 
) 
Returns @Table table 
(
    Id int identity(1,1), 
    Category_Id int, 
    ParentId int 
) 
AS 
    Begin 

    WITH x AS 
    (
     SELECT a.Category_Id, a.ParentId 
     FROM t_Category a 
     WHERE a.Category_Id=@CatId -- enter dead node walking here 

     UNION ALL 

     SELECT b.Category_Id, b.ParentId 
     FROM t_Category b 
     JOIN x ON x.Category_Id =b.ParentId 
    ) 

    insert into @Table select * from x; 

    return 

end 

당신은 as