'@P0'附近有語法錯誤

做一個分頁查詢功能，使用到了TOP #{pagenum}然后就報錯了。'@P0'附近有語法錯誤

未解決：#{pagenum}改成${pagenum}，但是mybatis報參數未找到錯誤，

解決：將對應接口DAO，對應方法參數前加上@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}