题解 | 计算每日累计利润
计算每日累计利润
https://www.nowcoder.com/practice/c9b7a2f73eb54a3da4a81f15fd8a3665
select *,//全部查询 sum(profit) over (order by profit_date) as cumulative_profit//对利润求和 按照日期顺序排序 重命名cumulative_profit from daily_profits order by profit_date //按照日期排序
