酒店预订SQL查询不工作

Question

我有两个表：

房

id 
category_id 
name 
description 
image 
price 
arrival_date 
depature_date 
status 

预订

id 
name 
email 
mobile 
category_id 
room_id 
arrival 
departure 

Q1。我如何检查客房是否可用？问题二：
Q2。我想说明的房间列表是空的用户输入的日期

我使用此查询，这让我error #1241 - Operand should contain 1 column(s)

SELECT * FROM room WHERE status = '1' AND id NOT IN 
    (SELECT * FROM booking 
    WHERE arrival='$arrival' 
    OR (arrival BETWEEN '$arrival' AND '$departure')) 

SELECT * FROM room WHERE status = '1' AND id NOT IN 
    (SELECT * FROM booking WHERE arrival='2/08/2013' 
    OR (arrival BETWEEN '2/08/2013' AND '22/08/2013')) 

Answer 1

为了您的问题：

Q1。我怎么能检查房间是否可用，为客户

我想没有预订房间可供客户，所以试试这个：

SELECT * 
FROM room r 
WHERE NOT EXISTS(
    SELECT 'booking' 
    FROM booking b 
    WHERE b.room_id = r.id 
    AND (b.arrival BETWEEN '$arrival' AND '$departure') 
) 

Q2。我想展现古都房间列表是空的用户输入的日期

查询是一样的，如果它不存在在该区间的房间是空的任何预订（因此可用于预订）

Answer 2

的主要问题是，在内部查询，你得到过许多列作为结果。

尝试：

SELECT * FROM room WHERE status = '1' AND id NOT IN 
    (SELECT room_id FROM booking 
    WHERE arrival='$arrival' 
    OR (arrival BETWEEN '$arrival' AND '$departure')) 

SELECT * FROM room WHERE status = '1' AND id NOT IN 
    (SELECT room_id FROM booking 
    WHERE arrival='2/08/2013' 
    OR (arrival BETWEEN '2/08/2013' AND '22/08/2013'))