select * from 
(    select ROW_NUMBER() over(order by ue.wzId desc)row,* from 
    (select e.title, e.childType as childType,e.content as content,e.rsTime as rsTime,e.id as wzId,u.id as usId,u.face as face,u.nickName as nickName from Essay e
    join Users u
    on e.userId=u.id)ue
     
) t
 where row between 1 and 7