mysql 中两个日期之间的可用性

Question

我想搜索两个日期之间的可用性。

这是我的tbl_bookingtable结构

slot_id     from_date       to_date       hotel_id
  1         2019-08-02      2019-08-06    2
  2         2019-08-10      2019-08-14    2
  3         2019-08-22      2019-08-24    2
  4         2019-08-28      2019-08-29    2

下面是一些测试用例，这是系统应该如何工作的

1) I/P Date : 2019-08-08 to 2019-08-09  -> O/P - Available. 
2) I/P Date : 2019-08-16 to 2019-08-18  -> O/P - Available.  
3) I/P Date : 2019-08-11 to 2019-08-15  -> O/P - Not Available. 
4) I/P Date : 2019-08-27 to 2019-08-28  -> O/P - Not Available.

这是我试过的查询

SELECT COUNT(*) as available from tbl_booking WHERE 
(from_date BETWEEN '2019-08-08' AND '2019-08-09') AND 
(to_date BETWEEN '2019-08-08' AND '2019-08-09')

Answer 1

我无法理解您的实际输出。从我的角度来看，我认为你需要这个

 SELECT COUNT(*) as available from tbl_booking WHERE 
 ('2019-08-08' BETWEEN from_date AND to_date) OR 
 ('2019-08-09' BETWEEN from_date AND to_date)

mysql 中两个日期之间的可用性

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