Question

我有以下存储过程：

CREATE PROCEDURE [dbo].[sp_cache_remove]  
 @Key NVARCHAR(450)  
AS  
BEGIN  

 --Clean up first  
 DELETE FROM Cache WHERE Expire <= GETUTCDATE()  

 DECLARE @Result NVARCHAR(MAX)  
 SELECT TOP 1 @Result = Value   
 FROM Cache  
 WHERE [Key] = @Key AND  
   Expire > GETUTCDATE()  

 DELETE FROM Cache WHERE [Key] = @Key  

 SELECT @Result  

END

这个随机失败。当我注释掉第一行（DELETE FROM...）时，它工作正常。这只发生在生产服务器上，因此无法获取更多错误详细信息。任何人都可以在这里发现任何可能的问题吗？

编辑：还有其他存储过程可以添加，获取等等。是否会出现死锁或什么？

Answer 1

你根本没有找回任何尝试initaliazed @Result

CREATE PROCEDURE [dbo].[sp_cache_remove]  
 @Key NVARCHAR(450)  
AS  
BEGIN  

 --Clean up first  
 DELETE FROM Cache WHERE Expire <= GETUTCDATE()  

 DECLARE @Result NVARCHAR(MAX) 
    set @Result = ''        -- <---- Initialized variable
 SELECT TOP 1 @Result = Value   
 FROM Cache  
 WHERE [Key] = @Key AND  
   Expire > GETUTCDATE()  

 DELETE FROM Cache WHERE [Key] = @Key  

 SELECT @Result  

END

SQL Server存储过程随机失败

1 个答案: