MySQL Query ErrorSELECT p.`id` FROM `product` p, `product_category` pc, `category` c WHERE c.publish=1 AND c.`id` IN() AND c.`id`=pc.`category_id` AND pc.`product_id`=p.`id` AND p.`hidden_flag`=0 AND p.`auction`=0 GROUP BY p.`id`:mysql_query