LeetCode：Trips and Users
1、题目名称 Trips and Users（出租车预约取消率） 2、题目地址 https://leetcode.com/problems/trips-and-users/ 3、题目内容 表Trips内存储了出租车的接单数据，包括Id、Client_Id、Driver_Id、City_Id、Status、Request_at共计6列，其中Status列是个枚举列，包括completed（已完成）、cancelled_by_driver（由司机取消）、cancelled_by_client（由乘客取消）三类： +----+-----------+-----------+---------+--------------------+----------+ | Id | Client_Id | Driver_Id | City_Id | Status |Request_at| +----+-----------+-----------+---------+--------------------+----------+ | 1 | 1 | 10 | 1 | completed |2013-10-01| | 2 | 2 | 11 | 1 | cancelled_by_driver|2013-10-01| | 3 | 3 | 12 | 6 | completed |2013-10-01| |