'@P0'附近有语法错误

做一个分页查询功能，使用到了TOP #{pagenum}然后就报错了。'@P0'附近有语法错误

未解决：#{pagenum}改成${pagenum}，但是mybatis报参数未找到错误，

解决：将对应接口DAO，对应方法参数前加上@Param("pagenum")

select top 20 exm001.id,taskdsh.id,inputdate,checkid,
proceedingname,taskdsh.isdeptapproved
from exm001 inner join taskdsh on exm001.checkid=taskdsh.systemcode
where exm001.id not in
(select top ${pagenum} exm001.id from exm001 inner join taskdsh on exm001.checkid=taskdsh.systemcode order by exm001.inputdate desc)
and taskdsh.operators=#{username}