MySQL检查日期范围是否与其他日期范围重叠？

我正在使用Codeigniter的汽车租赁系统，其中车辆可能有多个不可用的日期范围。我为不可用的日期范围创建了单独的表格，现在我希望用户输入日期范围并选择所有不与这些车辆的不可用日期范围重叠的车辆。以下是我的代码。MySQL检查日期范围是否与其他日期范围重叠？

$d1 = date('Y-m-d', strtotime($pickup)); 
    $d2 = date('Y-m-d', strtotime($dropoff)); 
// $this->db->where($d1." NOT BETWEEN date_ranges.start_date AND date_ranges.end_date AND " . $d2.' NOT BETWEEN date_ranges.start_date AND date_ranges.end_date'); 
    $this->db->where("'$d1' NOT BETWEEN date_ranges.start_date AND date_ranges.end_date AND '$d2' NOT BETWEEN date_ranges.start_date AND date_ranges.end_date OR ('$d1' < date_ranges.start_date AND '$d2' > date_ranges.end_date) "); 
// $this->db->where(" '$d1' <= date_ranges.end_date AND date_ranges.start_date <= '$d2'"); 

    $query = ->join('date_ranges', 'vehicles.id = date_ranges.vehicle_id', 'left') 
    ->group_by('vehicles.id') 
    ->get('vehicles');

原始查询

SELECT `vehicles`.`id`, `vehicles`.`year-`, `vehicles`.`model`, 
`vehicles`.`nightly_rate`, `vehicles`.`class`, 
`vehicle_pictures`.`picture`, 
`vehicles`.`people` FROM `vehicles` LEFT JOIN `vehicle_pictures` ON 
    `vehicles`.`id` = `vehicle_pictures`.`vehicle_id` LEFT JOIN `date_ranges` 
    ON 
    `vehicles`.`id` = `date_ranges`.`vehicle_id` 
    WHERE (`country` LIKE '%%' 
    ESCAPE 
    '!' OR `state` LIKE '%%' ESCAPE '!' OR `city` LIKE '%%' ESCAPE '!' OR 
    `street` 
    LIKE '%%' ESCAPE '!' OR `zip` LIKE '%%' ESCAPE '!') 
    AND '2017-05-23' 
    NOT 
    BETWEEN `date_ranges`.`start_date` AND date_ranges.end_date AND '2017- 
    05-24' 
    NOT 
    BETWEEN `date_ranges`.`start_date` AND date_ranges.end_date OR ('2017- 
    05-23' < 
    `date_ranges`.`start_date` AND '2017-05-24' > date_ranges.end_date) AND 
    `vehicles`.`people` > '1' GROUP BY `vehicles`.`id`;

来源

2017-05-24 BTree

的[检查日期范围重叠在MySQL]可能的复制（https://stackoverflow.com/questions/2545947/check-overlap-of-date-ranges-in-mysql） – JazZ

对于不重叠的日期范围内的基本算法是：

NOT(unavailable_date_range_START <= desired_date_range_END) AND NOT(unavailable_date_range_END >= desired_date_range_START)

所以翻译为您所查询的，应该是这样的：

SELECT `vehicles`.`id`, `vehicles`.`year`, `vehicles`.`model`, `vehicles`.`nightly_rate`, 
     `vehicles`.`class`, `vehicle_pictures`.`picture`, `vehicles`.`people` 

FROM `vehicles` 

LEFT JOIN `vehicle_pictures` ON (`vehicles`.`id` = `vehicle_pictures`.`vehicle_id`) 

WHERE ( `country` LIKE '%%' ESCAPE '!' 
     OR `state` LIKE '%%' ESCAPE '!' 
     OR `city` LIKE '%%' ESCAPE '!' 
     OR `street` LIKE '%%' ESCAPE '!' 
     OR `zip`  LIKE '%%' ESCAPE '!') 
AND `vehicles`.`id` NOT IN(SELECT DISTINCT `date_ranges`.`vehicle_id` 

          FROM `date_ranges` 

          WHERE `date_ranges`.`start_date` <= '$d2' AND `date_ranges`.`end_date` >= '$d1')

来源

2017-05-24 09:24:32 silkfire

它唯一的工作，如果在表格中有一个不可用的范围，而在我的情况下，每个车辆可能有多个不可用的日期范围。 – BTree

如果有多个不可用范围，你会得到什么？ – silkfire

如果同一辆车有多个不可用的范围，它甚至会选择范围重叠的车辆！ – BTree

最后，下面的查询为我工作。

SELECT `vehilces`.`id`, `vehilces`.`year`, `vehilces`.`model`, 
`vehilces`.`nightly_rate`, `vehilces`.`class`, `vehilce_pictures`.`picture`, 
`vehilces`.`people`, `date_ranges`.`start_date`, `date_ranges`.`end_date` FROM 
`vehilces` LEFT JOIN `date_ranges` ON `vehilces`.`id` = 
`date_ranges`.`vehilce_id` LEFT JOIN `vehilce_pictures` ON `vehilces`.`id` = 
`vehilce_pictures`.`vehilce_id` WHERE (`country` LIKE '%%' ESCAPE '!' OR 
`state` LIKE '%%' ESCAPE '!' OR `city` LIKE '%%' ESCAPE '!' OR `street` LIKE 
'%%' ESCAPE '!' OR `zip` LIKE '%%' ESCAPE '!') AND vehilces.id NOT IN(SELECT 
DISTINCT vehilce_id from date_ranges WHERE ('$d1' <= end_date) and ('$d2' >= 
start_date) or ('$d1' <= end_date) and (start_date <= '$d2')) AND 
`vehilces`.`people` > '1' GROUP BY `vehilces`.`id`

来源

2017-05-25 14:03:13 BTree

MySQL检查日期范围是否与其他日期范围重叠？

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