MySQL Complex Check with dates - mysql

Question

I have a table called Offers in which I have several offers:
ID | List Name | Arrival | Depart | Price
1 | Plus | 12 August | 18 August | $ 100.00
2 | Plus | 19 August | 25 August | $ 120.00
3 | Plus | 26 August | 1 September | $ 80.00
4 | Weekend | 11 August | 13 August | $ 50.00
5 | Weekend | 18 August | 20 August | $ 60.00
6 | Weekend | 25 August | 27 August | $ 40.00
Then I have a guest in my hotel which has a check-in and check-out date.
In need to find all the offers with the same List Name that cover all the days of my vacation's guest (from check-in date to check-out date).
Example
If my guest spends his time in my hotel from the 13th of August to the 20th of August I need to be returned only ids 1 and 2.
If my guest spends his time in my hotel from the 13th of August to the 27th of August I need to be returned only ids 1, 2, and 3. That's because the ids 6 and 7 cover only weekend and not all the days between check-in and check-out dates.
If my guest spends his time in my hotel from the 18th of August to the 20th of August I need to be returned only ids 1, 2 and 5.

Answer 1

You are looking for logic like this:
select o.*
from offers o
where o.arrival <= $arrival and o.depart >= $depart;
$arrival and $depart are the dates for your guest.

Answer 2

You need to do something like this :
SQL Fiddle
MySQL 5.6 Schema Setup:
CREATE TABLE offers
(`ID` int, `Arrival` date, `Depart` date, `Price` float)
;
INSERT INTO offers
(`ID`, `Arrival`, `Depart`, `Price`)
VALUES
(1, '2016-08-12', '2016-08-18', 100.00),
(2, '2016-08-19', '2016-08-25', 120.00),
(3, '2016-08-26', '2016-09-01', 80.00),
(4, '2016-08-11', '2016-08-13', 50.00),
(5, '2016-08-18', '2016-08-20', 60.00),
(6, '2016-08-25', '2016-08-27', 40.00)
;
Query 1:
select *
from offers
where (((arrival >= '2016-08-13' and arrival <= '2016-08-20') or
(depart >= '2016-08-13' and depart <= '2016-08-20'))
and datediff(depart,arrival) = 6)
or
(arrival = '2016-08-13' and depart = '2016-08-20'
and datediff(depart,arrival) = 2)
Results:
| ID | Arrival | Depart | Price |
|----|--------------------------|--------------------------|-------|
| 1 | August, 12 2016 00:00:00 | August, 18 2016 00:00:00 | 100 |
| 2 | August, 19 2016 00:00:00 | August, 25 2016 00:00:00 | 120 |
Query 2:
select *
from offers
where (((arrival >= '2016-08-13' and arrival <= '2016-08-27') or
(depart >= '2016-08-13' and depart <= '2016-08-27'))
and datediff(depart,arrival) = 6)
or
(arrival = '2016-08-13' and depart = '2016-08-27'
and datediff(depart,arrival) = 2)
Results:
| ID | Arrival | Depart | Price |
|----|--------------------------|-----------------------------|-------|
| 1 | August, 12 2016 00:00:00 | August, 18 2016 00:00:00 | 100 |
| 2 | August, 19 2016 00:00:00 | August, 25 2016 00:00:00 | 120 |
| 3 | August, 26 2016 00:00:00 | September, 01 2016 00:00:00 | 80 |
Query 3:
select *
from offers
where (((arrival >= '2016-08-18' and arrival <= '2016-08-20') or
(depart >= '2016-08-18' and depart <= '2016-08-20'))
and datediff(depart,arrival) = 6)
or
(arrival = '2016-08-18' and depart = '2016-08-20'
and datediff(depart,arrival) = 2)
Results:
| ID | Arrival | Depart | Price |
|----|--------------------------|--------------------------|-------|
| 1 | August, 12 2016 00:00:00 | August, 18 2016 00:00:00 | 100 |
| 2 | August, 19 2016 00:00:00 | August, 25 2016 00:00:00 | 120 |
| 5 | August, 18 2016 00:00:00 | August, 20 2016 00:00:00 | 60 |