select product_id, round(if(sum(product_id)!=0,sum(if_click)/count(product_id),0),3)ctr, round(if(sum(if_click)!=0,sum(if_cart)/sum(if_click),0),3)cart_rate, round(if(sum(if_cart)!=0,sum(if_payment)/sum(if_cart),0),3)payment_rate, round(if(sum(if_payment)!=0,sum(if_refund)/sum(if_payment),0),3)refun...