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 AS e
INNER JOIN
exp_action_tb AS ea ON e.exp_number=ea.exp_number;
