SQL 只取重复记录一条记录并且是最小值

select pid,* from v_RolseFolw as a where a.StateValue>1 and  not exists(
  select 1 from v_RolseFolw where a.mid = mid  and a.userid=userid   and StateValue>1 and a.StateValue>StateValue 
) 
and UserID ='19'