Selecting against subsets of a list in MySQL

Question

I\'m quite a begginer and I have two tables: \"product\" and \"product attributes\".

Here\'s some imaginary data (the actual stuff involves more tables )

Pr

Answer 1

Based on your insight guys, I optimized it even further and used only 1 COUNT statement like this:

SELECT * ,COUNT(p.product_id) AS c FROM product_attribute pa 
LEFT JOIN products p ON pa.product_id = p.product_id AND pa.attribute_id NOT IN ($filter_list)
GROUP BY pa.product_id
HAVING c=0

Does it work ? :)

Edit:
That code doesn't return the product's name or other fields it might have. This is the correct one:

SELECT * ,COUNT(pa.product_id ) AS c FROM products p
LEFT JOIN product_attribute pa ON pa.product_id = p.product_id AND pa.attribute_id NOT IN ($filter)
GROUP BY p.product_id
HAVING c=0