一个Sql查询集合的问题！
在开发一个程序的时候，遇到一个Sql问题,数据库 SqlServer 2000

如下这个SQL语句是可以执行成功的！
select * from OS_TreeAddress where OS_Description!=1 and ID in (2,3,4,5,6,7)

但问题是我的2,3,4,5,6,7，这个，现在是要从另外一个表查出来的！

select * from OS_TreeAddress where OS_Description!=1 and ID in 
(select OS_PurviewID from OS_Purview where Id in (select OS_DeptID from OS_UserInfo where ID=1))
这个就查不出来了！报如下错误：

服务器: 消息 245，级别 16，状态 1，行 1
将 varchar 值 '2,3,4,5,6,7' 转换为数据类型为 int 的列时发生语法错误。


如下的语句查出来的结果2,3,4,5,6,7 ，
select OS_PurviewID from OS_Purview where Id in (select OS_DeptID from OS_UserInfo where ID=1)


我现在要如何写Sql语句，才能和select * from OS_TreeAddress where OS_Description!=1 and ID in (2,3,4,5,6,7)
这个语句的效果一样呢？

------解决方案--------------------
将OS_PurviewID 转换为int
将OS_DeptID 转换为int
具体的情况要你自己才知道了.

如:
select * from OS_TreeAddress where OS_Description!=1 and ID in
(select cast(OS_PurviewID as int) from OS_Purview where Id in (select cast(OS_DeptID as int) from OS_UserInfo where ID=1))