uniqueidentifier转换成varchar数据类型的sql语句

代码如下：

---涂聚文 Geovin Du 
DECLARE @myid uniqueidentifier 
SET @myid = NEWID() 
SELECT CONVERT(char(255), @myid) AS 'char'; 
GO 
--涂聚文 Geovin Du 
declare @allstring char(255),@AreaUid Uniqueidentifier 
set @AreaUid='37A1DA94-4AC6-4ED0-B96F-BA3FE6AEACC8' 
set @allstring= cast(@AreaUid as char(255)) 
select @allstring 
--涂聚文 Geovin Du 
declare @allstring char(255),@AreaUid Uniqueidentifier,@s varchar(200) 
set @AreaUid='37A1DA94-4AC6-4ED0-B96F-BA3FE6AEACC8' 
set @allstring= CONVERT(char(255),@AreaUid) 
set @s=cast(@allstring as varchar(200)) 
select @allstring,@s 
--涂聚文 Geovin Du 
declare @allstring char(255),@AreaUid Uniqueidentifier,@s varchar(200) 
set @AreaUid='37A1DA94-4AC6-4ED0-B96F-BA3FE6AEACC8' 
select @s=CONVERT(varchar(200),cast(@AreaUid as char(225))) 
select @s