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select * from
(
(h LEFT JOIN D ON h.HouseID = D.HouseID ) as P
LEFT JOIN R ON P.HouseID = R.HouseID
) as K
select * from
(
(SELECT BuildingID, HouseID,[Floor],RoomNum, HouseTypeName, Remark FROM House , HouseType where House.HouseTypeID = HouseType.HouseTypeID)as h
LEFT JOIN (SELECT HouseID,COUNT(*) HouseHolderNum FROM HouseholderInHouse GROUP BY HouseID)as D
ON h.HouseID = D.HouseID
LEFT JOIN (SELECT HouseID,COUNT(*) ResidentNum from ResidentInHouse GROUP BY HouseID ) as R
ON h.HouseID = R.HouseID
)