题解 | 统计快递从创建订单到发出间隔时长
统计快递从创建订单到发出间隔时长
https://www.nowcoder.com/practice/be3e56c950724b27aa79b79309147443
select round(avg(timestampdiff(minute,e.create_time,ea.out_time))/60,3) as time from express_tb e join exp_action_tb ea on e.exp_number = ea.exp_number
简单
投递美团等公司7个岗位