date类型用between,包含双边界,所以减一秒
返回 2020 年 1 月的所有订单的订单号和订单日期
https://www.nowcoder.com/practice/c7734db33854477aa94ae238a3390435
select order_num,order_date from Orders where order_date between date'2020-01-01' and subdate(date'2020-02-01', interval 1 second) order by order_date