酒店預訂SQL查詢不工作

Question

我有兩個表：

房

id 
category_id 
name 
description 
image 
price 
arrival_date 
depature_date 
status 

預訂

id 
name 
email 
mobile 
category_id 
room_id 
arrival 
departure 

Q1。我如何檢查客房是否可用？問題二：
Q2。我想說明的房間列表是空的用戶輸入的日期

我使用此查詢，這讓我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

爲了您的問題：

Q1。我怎麼能檢查房間是否可用，爲客戶

我想沒有預訂房間可供客戶，所以試試這個：

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。我想展現古都房間列表是空的用戶輸入的日期

查詢是一樣的，如果它不存在在該區間的房間是空的任何預訂（因此可用於預訂）

Answer 2

的主要問題是，在內部查詢，你得到過許多列作爲結果。

嘗試：

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'))