Mysql 在CASE-SQL时添加语句

我有这样的桌子：

这是我关于显示房间可用性的问题

SELECT 
hotel.nama_hotel,
hotel.kota,
room.id_room,
room.position,
room.price,
room_price.date_start,
room_price.date_end,
room_price.price
FROM room
    JOIN hotel on room.id_hotel = hotel.id_hotel
    JOIN room_price on room.id_room = room_price.id_room
    WHERE 
        (
            room.id_room NOT IN 
            (
            SELECT id_room FROM booking 
                WHERE 
                (
                    booking_start BETWEEN '2018-02-10' AND '2018-02-11' OR 
                    booking_end   BETWEEN '2018-02-10' AND '2018-02-11' OR 
                    '2018-02-10'  BETWEEN booking_start AND booking_end OR
                    '2018-02-11'  BETWEEN booking_start AND booking_end
                ) 
            )
        )
    AND (room.status = 1) 
    AND (hotel.kota="Bandung")
    AND (room.position = "earth")

我从表

room

和表

room\u price

中得到了两列价格

当插入的日期介于

房间价格之间时，我需要一列价格。日期开始

和

房间价格。日期结束

和价格显示在表

房间价格

在

room\u price.date\u start

和

room\u price.date\u end

之间不启用时，价格显示在表

room

这样做可能吗

编辑

这就是问题所在

SELECT 
hotel.nama_hotel,
hotel.kota,
room.id_room,
room.position,
room_price.date_start,
room_price.date_end,
    (
        CASE WHEN 
        (
            '2018-02-10' BETWEEN room_price.date_start AND room_price.date_end
        )THEN  
        room.price = room_price.price
        ELSE room.price = room.price END
    ) as price from room 



   JOIN hotel on room.id_hotel = hotel.id_hotel
    JOIN room_price on room.id_room = room_price.id_room
    WHERE 
        (
            room.id_room NOT IN 
            (
            SELECT id_room FROM booking 
                WHERE 
                (
                    booking_start BETWEEN '2018-02-10' AND '2018-02-11' OR 
                    booking_end   BETWEEN '2018-02-10' AND '2018-02-11' OR 
                    '2018-02-10'  BETWEEN booking_start AND booking_end OR
                    '2018-02-11'  BETWEEN booking_start AND booking_end
                ) 
            )
        )
    AND (room.status = 1) 
    AND (hotel.kota="Bandung")
    AND (room.position = "earth")

---

但是我没有得到

price

=

room\u price.price

你错过了

，
room.price后面第9行之后的
，当你打开一个括号
（
）时，SQL认为你在调用一个函数
room.price（）
在你的选择中使用IF（），这会节省你的时间

hotel.nama_hotel,
hotel.kota,
room.id_room,
room.position,
room_price.date_start,
room_price.date_end,
IF('2018-02-10' BETWEEN room_price.date_start AND room_price.date_end, room_price.price, room.price)
FROM room
INNER JOIN hotel ON room.id_hotel = hotel.id_hotel
INNER JOIN room_price ON room.id_room = room_price.id_room
WHERE 
    room.id_room NOT IN( 
    SELECT id_room 
    FROM booking 
    WHERE 
        booking_start BETWEEN '2018-02-10' AND '2018-02-11' OR 
        booking_end   BETWEEN '2018-02-10' AND '2018-02-11' OR 
        '2018-02-10'  BETWEEN booking_start AND booking_end OR
        '2018-02-11'  BETWEEN booking_start AND booking_end

                    )
AND (room.status = 1) 
AND (hotel.kota="Bandung")
AND (room.position = "earth")

我不确定你是否需要房间。房间是否不在（…）内，如图所示

IF('2018-02-10' BETWEEN room_price.date_start AND room_price.date_end, room_price.price, room.price)

将检查日期，如果是真的，则将从room_price.price返回价格，如果是假的，则将返回room.price

更多信息

这可以修复错误，但我无法从
price\u room