〇、背景

直接计算会报错

一、日期之差

1、MySQL

 TIMESTAMPDIFF(SECOND,start_time,submit_time)/60 AS use_time

2、SQLServer

select datediff(d,'2020-02-24 20:59:00','2020-02-25 20:00:00')

3、Pgsql

select date_part('day','2020-02-25 20:00:00'::TIMESTAMP-'2020-02-24 20:59:00') 

作者：​​哥们要飞​​​