mapper查询两个库的书写

SELECT s.`name`,s.location addr,r.comstatus,r.id ,
(SELECT COUNT(1)
         FROM icloud_hst_#{icloud_hst_date}.hst_event_#{station_id} h,static_ied i,static_dgt d
               WHERE h.deviceID = i.id AND i.station_id = #{station_id} AND d.warning = 1 AND h.varID = d.id  AND h.knowFlag = 0 AND h.updateDT LIKE  CONCAT(#{updateDT},'%')) notice
   FROM static_user u,static_station s,real_station r
      WHERE u.owner_id = s.owner_id AND s.id = r.id AND u.owner_id = #{owner_id}