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,a.out_time)/60),3) as time from express_tb e left join exp_action_tb a on e.exp_number=a.exp_number
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