Не могу выполнить запрос: SELECT id, name, article, unit, price, hit, new, availability_product, description_name, lokis_name, group_id, visible, sort_order FROM products, products_state WHERE id=product_open_design_kniga_dlya_zapisi_95_160_mm_cvet_chernii AND id=product_id GROUP BY id. Ошибка: Unknown column 'product_open_design_kniga_dlya_zapisi_95_160_mm_cvet_chernii' in 'where clause'