Question

Bellow is my “rooms” mysql table. (This is example table i have created to show here.)

I want to show low cost rooms in case multiple room bookings. Ex: User have select two room, 1 adult in first room and 2 adults in second room. Now my result should come as below

My Query is : SELECT * FROM rooms WHERE hotel_code=”100″ GROUP BY adult+child Order by cost ASC

It is not working. I am not able to get the expected result with this query. Please let me know the solution for this.

Answer 1

Try this:

SELECT  r.*
FROM Rooms r
INNER JOIN
(
  SELECT 
    adult, child, MIN(Cost) MinCost
  FROM Rooms
  WHERE hotel_code = 100
  GROUP BY  adult, child
) m ON r.adult = m.adult AND r.child = m.child
  AND r.cost = m.mincost
ORDER BY r.id
LIMIT 2;

SQL Fiddle Demo

This will give you:

| ID | HOTEL_CODE |    ROOM_TYPE | ADULT | CHILD | COST |
---------------------------------------------------------
|  2 |        100 | Single Delux |     1 |     0 |   20 |
|  3 |        100 | Twin Stadard |     2 |     0 |   25 |