select product_id ,ifnull(round(sum(if_click)/count(1),3),0) ctr -- 点展比 ,ifnull(round(sum(if_cart)/sum(if_click),3),0) cart_rate -- 加购率 ,ifnull(round(sum(if_payment)/sum(if_cart),3),0) payment_rate -- 成单率 ,ifnull(round(sum(if_refund)/sum(if_payment),3),0) refund_rate -- 退货率 from tb_user_event where ...