MySQL search products with their attributes

Question

I have a MySQL database that contains products with their group/attributes/ i created a sample of data in

http://sqlfiddle.com/#!2/7d8a04/1

create ta         


        

Answer 1

You need to join with product_filters separately for each attribute:

SELECT DISTINCT products.*  
FROM products
JOIN product_filters AS f1 ON f1.product_id=products.id
JOIN product_filters AS f2 ON f2.product_id=products.id
WHERE ( f1.attribute_id=1 and f1.filter_id in (1,2) )
AND ( f2.attribute_id=3 and f2.filter_id in (6) )

DEMO

Your version tried to find a single row in product_filters that has both attribute IDs, which isn't possible.