如何找到重叠的日期答案

【问题标题】：How to find overlapping dates如何找到重叠的日期
【发布时间】：2022-12-18 07:11:48
【问题描述】：

我需要的是返回所有可能相互重叠的记录。

-- Create Temp Table

CREATE TABLE `abc` (
`id` int(11) NOT NULL,
`propertie_id` int(11) NOT NULL,
`rooms_id` int(11) NOT NULL,
`block_name` varchar(256) NOT NULL,
`check_in` date NOT NULL,
`check_out` date NOT NULL,
`status` tinyint(2) NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

-- Insert records

INSERT INTO `abc` (`id`, `propertie_id`, `rooms_id`, `block_name`, `check_in`, `check_out`, `status`) VALUES
(1, 33, 5, 'BeachHouse', '2022-09-01', '2022-09-04', 3),
(2, 33, 5, 'BeachHouse', '2022-09-04', '2022-09-06', 2),
(3, 33, 5, 'BeachHouse', '2022-11-28', '2022-12-04', 1),
(4, 33, 5, 'BeachHouse', '2022-12-04', '2022-12-14', 13),
(5, 44, 6, 'C3', '2022-09-24', '2022-09-26', 2),
(6, 44, 16, 'C3', '2022-09-26', '2022-09-29', 13),
(7, 46, 12, '8BR', '2022-12-26', '2023-01-11', 2),
(8, 46, 12, '8BR', '2023-01-01', '2023-01-11', 1),
(9, 47, 4, 'Skye', '2022-12-21', '2023-01-01', 3),
(10, 47, 4, 'Skye', '2023-01-01', '2023-01-03', 1);

我的结果是这样的： See the screenshot

但是我只想在 2022-09-04 签到与 2022-09-04 签到重叠时用红色标记行（在屏幕截图中）并忽略其他行

我试过这个

SELECT o.propertie_id,o.rooms_id,o.block_name,o.check_in,o.check_out,o.status 
FROM vi_bookings o
WHERE EXISTS
(
 SELECT 1 FROM vi_bookings o2
 WHERE o2.`propertie_id` = o.`propertie_id`
 AND o2.`rooms_id` = o.`rooms_id`
 AND o2.`block_name` = o.`block_name`
 AND o2.check_in <= o.check_out 
 AND o.check_in <= o2.check_out 
 AND o2.id != o.id
)
AND o.status NOT IN (4,10)
ORDER BY o.`propertie_id`, o.`block_name`, o.check_in

【问题讨论】：

你试过什么了？你卡在哪儿了？为什么这用 PHP 标记，但不包含任何此类代码？

标签： mysql

【解决方案1】：

你很接近。稍作改动，您应该会看到想要的结果：

SELECT o.propertie_id,o.rooms_id,o.block_name,o.check_in,o.check_out,o.status 
FROM vi_bookings o
WHERE EXISTS
(
 SELECT 1 FROM vi_bookings o2
 WHERE o2.`propertie_id` = o.`propertie_id`
 AND o2.`rooms_id` = o.`rooms_id`
 AND o2.`block_name` = o.`block_name`
 AND o2.check_in < o.check_out AND o2.check_out > o.check_in
 AND o2.id != o.id
)
AND o.status NOT IN (4,10)
ORDER BY o.`propertie_id`, o.`block_name`, o.check_in

【讨论】：