题解 | #统计2021年10月每个退货率不大于0.5的商品各项指标#

select
product_id,
ifnull(round(sum(if_click)/count(product_id),3),0) as ctr,
ifnull(round(sum(if_cart)/sum(if_click),3),0) as cart_rate,
ifnull(round(sum(if_payment)/sum(if_cart),3),0) as payment_rate,
ifnull(round(sum(if_refund)/sum(if_payment),3),0) as refund_rate
from tb_user_event
where 
date_format(event_time,'%Y-%m') = '2021-10'
group by product_id
having refund_rate <= 0.5
order by product_id