请问:一条SQL查找语句(急用)

请教:一条SQL查找语句(急用)
要模糊查找记录
SELECT   *
FROM   mt
WHERE   (picid   IN
                    (SELECT   DISTINCT   pid
                  FROM   canpin))

如果改成

SELECT   *
FROM   mt
WHERE   (picid   like   '%
                    (SELECT   DISTINCT   pid
                  FROM   canpin))   % '
就出错,请问应该怎样实现呢?


------解决方案--------------------
SELECT *
FROM mt
WHERE (picid like '% '+
(SELECT DISTINCT cast( pid as varchar)
FROM canpin)+ '% ')
---?
------解决方案--------------------
--如果pid不是字符型

select * from mt as tmp
where exists(select 1 from canpin where tmp.picid like rtrim(pid)+ '% ')