Question

SELECT DISTINCT
  Room.RoomID, 
  Room.RoomNumber, 
  Room.PhoneExtension, 
  Room.SpecialNotes ,
  RoomType.Description

FROM        
  Room 

INNER JOIN
  RoomType 
ON 
  Room.TypeID = RoomType.TypeID

LEFT JOIN
  Reservation
ON
  Room.RoomID = Reservation.RoomID

WHERE
  Room.DeleteFlag=0 AND
  (Reservation.ResStatus <> 'Occupied' OR Reservation.ResStatus = NULL) AND 
  (Reservation.ResStatus <> 'Reserved' OR Reservation.ResStatus = NULL) AND 
  (Reservation.ResStatus <> 'Confirmed' OR Reservation.ResStatus = NULL)

ORDER BY
  RoomNumber

您好，我有一个删除房间表单，应该在数据库中将房间标记为已删除。房间ID也会在预订时发布到预订表。我试图获得所有未出现在预订中的房间，或者如果它们在那张桌子中，那么它们就不应该被保留，占用或确认。

该查询将退回所有预订时专用的房间，无论预订状态如何，没有预订状态的房间。

任何提示都将不胜感激。

Answer 1

也许我误解了你的问题，但试试这个：

SELECT  DISTINCT
    Room.RoomID, 
    Room.RoomNumber, 
    Room.PhoneExtension, 
    Room.SpecialNotes ,
    RoomType.Description
FROM            Room 
    INNER JOIN  RoomType    ON Room.TypeID = RoomType.TypeID
    /*LEFT  JOIN  Reservation ON Room.RoomID = Reservation.RoomID*/
WHERE   Room.DeleteFlag=0 And Room.RoomID not in (select RoomID from Reservation where
    (Reservation.ResStatus <> 'Occupied' OR Reservation.ResStatus = NULL)
    AND (Reservation.ResStatus <> 'Reserved' OR Reservation.ResStatus = NULL)
    AND (Reservation.ResStatus <> 'Confirmed' OR Reservation.ResStatus = NULL))
ORDER BY    RoomNumber

过滤SQL查询

1 个答案: