Така че започнете с това:
SELECT *
FROM shop_product_properties
WHERE name = 'Insert Style';
След това въведете подзаявка:
SELECT *
FROM shop_product_properties
WHERE name = 'Insert Style'
AND product_id IN (
SELECT DISTINCT product_id
FROM shop_product_properties
WHERE name = 'First Choice Material'
AND value = 'Gold'
);
http://sqlfiddle.com/#!2/ecfb4/1