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MySQL-查找时间重叠

MySQL-查找时间重叠

编辑:使用其他信息,现在仅限于仅显示与某些较早的预订冲突的预订。

我认为这可以解决问题:

SELECT DISTINCT
    b2.booking_id, -- The later booking
    b2.booking_start,
    b2.booking_end,
    b2.creation_date,
    rb1.resource_id, -- The resource over which the two bookings clash
    b1.booking_id, -- The earlier booking
    b1.booking_start,
    b1.booking_end
FROM resource_booked rb1
    INNER JOIN booking b1 ON b1.booking_id = rb1.booking_id
    INNER JOIN booking b2 ON b1.booking_id <> b2.booking_id
        AND b2.booking_start BETWEEN b1.booking_start AND b1.booking_end
    INNER JOIN resource_booked rb2 ON rb2.resource_id = rb1.resource_id
        AND rb2.booking_id = b2.booking_id

这是如何测试的:

use tempdb

drop table resource_booked 
drop table Booking

create table Booking
(
    booking_id int,
    booking_start datetime,
    booking_end datetime,
    creation_date datetime
)

create table resource_booked 
(
    booking_id int,
    resource_id int
)

insert Booking values (1, '1 january 2000', '1 march 2000', '1 january 2000')
insert Booking values (2, '1 february 2000', '1 may 2000', '2 january 2000')
insert Booking values (3, '1 april 2000', '1 june 2000', '3 january 2000')
insert Booking values (4, '1 july 2000', '1 august 2000', '4 january 2000')

insert resource_booked values (1, 1)
insert resource_booked values (2, 1)
insert resource_booked values (3, 1)
insert resource_booked values (4, 1)
insert resource_booked values (1, 2)
insert resource_booked values (3, 2)
MySQL 2022/1/1 18:46:35 有261人围观

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