题解 | #统计每个退货率不大于0.5的商品各项指标#

select
product_id
,round(sum(if_click)/count(product_id),3) ctr
,round(if(sum(if_click)=0,0,sum(if_cart)/sum(if_click)),3) cart_rate
,round(if(sum(if_cart)=0,0,sum(if_payment)/sum(if_cart)),3) payment_rate
,round(if(sum(if_payment)=0,0,sum(if_refund)/sum(if_payment)),3) refund_rate
from tb_user_event
where left(event_time,7) = '2021-10'
group by product_id
having refund_rate<=0.5
order by product_id