INNER JOIN mysql from one table to another where its based on multiples of same id

Question

I have an table called product which lets say looks like this:

product

  product_id  |  cults_id1 |  cults_id2 | cults_id3
  -----------------------------------------------------
       1      |      5     |     4      |     2

And the also a table thats based on this called cultivar :

cultivar

  cults_id  |  cults_name | 
  -------------------------
       1    |  berries    |  
       2    |  fruit      |  
       3    |  choc       |  
       4    |  wood       | 
       5    |  mysql!     |  

How would i create an JOIN query to get each name from cultivar table where the product id in product table is the same as cults_id in the cultivar table?

OUTPUT

My Product Cults :

  berries, Mysql!, wood, fruit

Dont think an INNER JOIN is the way to go but i would have tried something like this:

  $query = "SELECT cultivars.cults_name
        FROM product 
        INNER JOIN wine_cultivar ON wine_cultivar.cults_id = product.cultivar_1_id
        INNER JOIN wine_cultivar ON wine_cultivar.cults_id = product.cultivar_2_id
        INNER JOIN wine_cultivar ON wine_cultivar.cults_id = product.cultivar_3_id
        INNER JOIN wine_cultivar ON wine_cultivar.cults_id = product.cultivar_4_id
        ";

i tried a inner join multiple times targeting all the ids but dont think this is the way to go. Also this is just a part of my sql query.

Answer 1

Simply assign table aliases to each self join and then reference corresponding fields in SELECT .

Right now you join to same table but do not provide aliases to distinguish between the four which MySQL should have raised its Error #1066 for this attempt.

SELECT p.product_image_path, p.product_id, p.brand_name, p.product_name, b.botttle_size, v.vintage, 
       t.wine_type_blend, p.price, p.quantity, p.time_created, p.reference_number, p.shipping_cost, 
       c1.cultivar_type as cultivar_type1, c2.cultivar_type as cultivar_type2, 
       c3.cultivar_type as cultivar_type3, c4.cultivar_type as cultivar_type4
FROM product p
INNER JOIN wine_bottle b ON b.bottle_id = p.bottle_id 
INNER JOIN wine_vintage v ON v.vintage_id = p.vintage_id 
INNER JOIN wine_type t ON t.type_id = p.type_id
INNER JOIN wine_cultivar c1 ON c1.cultivar_id = p.cultivar_1_id
INNER JOIN wine_cultivar c2 ON c2.cultivar_id = p.cultivar_2_id
INNER JOIN wine_cultivar c3 ON c3.cultivar_id = p.cultivar_3_id
INNER JOIN wine_cultivar c4 ON c4.cultivar_id = p.cultivar_4_id