Question

My sql knowledge is not that good and after 2 hours of brainstorm i decided to ask my fellow friends in here.

Here is my problem, i am developing a travel website. There are regions and prices table. structure is basicly like this.

regions             region_contents         prices
-------             ----------------        --------
regionId            regionId                priceId
regionName          hotelId                 hotelId
someMoreFields      someMoreFields          price
                                            beginDate
                                            endDate
                                            someMoreFields

What i want out of this data is

  +-----------------+-------------+-------------------------+
  |        hotelId  |  hotelName  |  min price for this Id  |
  +-----------------+-------------+-------------------------+
  |        hotelId  |  hotelName  |  min price for this Id  |
  +-----------------+-------------+-------------------------+
  |        hotelId  |  hotelName  |  min price for this Id  |
  +-----------------+-------------+-------------------------+
  |        hotelId  |  hotelName  |  min price for this Id  |
  +-----------------+-------------+-------------------------+

I query for all the hotels in spesific region ordered by min price for each hotel and the endDate of price for each hotel should be later than NOW().

Thanks in advance.
Also apoligies for bad grammar.

Answer 1

This query should be what you need:

SELECT hotel_id, hotel_name, MIN(price)
FROM region
JOIN region_contents 
   ON regionName = <reqdname> AND region.regionID = region_contents.regionID
JOIN prices 
   ON region_contents.hotel_id = prices_hotel_id
WHERE end_date > NOW()
GROUP BY hotel_id
ORDER BY MIN(price)