SELECT COUNT(DISTINCT p.`id_product`) AS nb FROM `ps_product` p AND p.`active` = 1 AND p.`id_product` IN ( SELECT cp.`id_product` FROM `ps_category_group` cg LEFT JOIN `ps_category_product` cp ON (cp.`id_category` = cg.`id_category`) WHERE cg.`id_group` = 1 )