我做啦～我只会这一道！！！ 不过没有截图。。大概回忆了一下 如果有大佬发现不对欢迎指教！ 大概是 select id, sum(case when category='hotel' then 1 else 0 end) as hotel, sum(case when category=flight' then 1 else 0 end) as flight, avg(amount) from detail where substr(orderdate,1,4)='2019' group by id order by id