存儲函數返回NULL

Question

我創建主數據庫下面的函數，因此您可以 運行的代碼正確地複製它沒有問題

ALTER FUNCTION [dbo].[sf_GetDateAggioGAP] 
        (@name varchar,@type_desc VARCHAR) 
RETURNS DATETIME AS 

BEGIN 
    DECLARE @RESULT DATETIME 
    DECLARE @DATA DATETIME 
    DECLARE @RIPETI INT 
    SET @DATA = (SELECT DISTINCT create_date as DATINI FROM sys.all_objects WHERE (name = @name) AND (TYPE_DESC = @type_desc)) 
    SET @RIPETI = (SELECT DISTINCT OBJECT_ID as RIPETI FROM sys.all_objects WHERE (name = @name) AND (TYPE_DESC = @type_desc)) 
    SET @RESULT=@DATA 
     WHILE @DATA <= getdate() 
     BEGIN 
     SET @DATA=dateadd(month,@RIPETI,@DATA) 
     IF @DATA > GETDATE() 
     BREAK 
     ELSE 
     CONTINUE 
     SET @RESULT=@DATA 
     END 
     RETURN @RESULT 
    END 

當我打電話給我的功能以這種方式"select dbo.sf_getdateaggiogap('sysrscols','system_table') as datanext from sys.all_objects where name ='sysrscols'"結果總是空，但查詢的結果始終爲空。 我在哪裏錯了？

THANKS

Answer 1

的參數沒有大小....

Alter FUNCTION [dbo].[sf_GetDateAggioGAP] 
        (@name varchar(max),@type_desc VARCHAR(max))