请问这样的功能用SQL 怎么实现？

[krukur]

我首先要查询用户所属的部门

select deptId from employee where id='00'

结果为：

“12，33，25”

deptId字段存放的是varchar类型，多个部门id用逗号隔开的

我现在要根据上面的部门编号一下查出所有的部门记录,就像下面的这样的语句的结果

select * from dept where id in ('12','33','25')

我现在是这样写的:

select * from dept where id in (select deptId from employee where id='00')

上面的语句不行，请问要实现这样的结果，怎么用sql语句一下就实现这样的功能？

[mengmou]

DECLARE @deptid VARCHAR(MAX)

SELECT @deptid = ',' + deptId + ',' FROM employee WHERE id='00'

SELECT * FROM DEPT WHERE CHARINDEX(','+CONVERT(VARCHAR(10),id)+',',@deptid ) > 0

[吉普赛的歌]

SELECT *
FROM   dept AS a
WHERE  EXISTS(
    SELECT 1
    FROM   employee AS b
    WHERE  b.id = '00' AND ','+b.depId+',' LIKE '%,'+ a.id+',%' 
)

[krukur]

谢谢，两位大神

[吉普赛的歌]

--如果 dept 表的 id 字段是 int 或 bigint 类型， 可以用下面的
SELECT *
FROM   dept AS a
WHERE  EXISTS(
    SELECT 1
    FROM   employee AS b
    WHERE  b.id = '00' AND ','+b.depId+',' LIKE '%,'+ LTRIM(a.id)+',%' 
)