题解 | 统计各等级会员用户下订单总额
select u.vip as vip, sum(if(v.order_price is null,0,v.order_price)) as order_total from order_tb v right join uservip_tb u on v.user_id = u.user_id group by u.vip order by order_total desc
select u.vip as vip, sum(if(v.order_price is null,0,v.order_price)) as order_total from order_tb v right join uservip_tb u on v.user_id = u.user_id group by u.vip order by order_total desc
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