存储过程的写法!有关查询的

求一个存储过程的写法!在线等,有关查询的
下面两个参数一个是用户的   ID   ,@as_syntax是在前台封装好了的查询条件直接当参数传过来.
请叫各位该怎么写呢
ALTER   PROCEDURE   "ass ". "proc_query_asset_purchase "(   in   @USERID   varchar(20),   @as_syntax   varchar(4000)
       
)
AS  
select   *   from   UserList   where   [email protected]   ....

------解决方案--------------------
alter proc proc_query_asset_purchase
( in @USERID varchar(20),
@as_syntax varchar(4000)
)
AS
exec( 'select * from UserList where UserID= '[email protected]+ ' and '[email protected]_syntax)