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Author: exajobs

leetcode/database/README.md

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+### LeetCode Database
+
+
+| # | Title | Solution | Difficulty |
+|---| ----- | -------- | ---------- |
+|1|[Trips and Users](https://leetcode.com/problems/trips-and-users/)| [MySQL](./TripsAndUsers.sql)|Hard|

leetcode/database/TripsAndUsers.sql

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+SELECT t.`Request_at` AS Day,
+ROUND(COUNT(CASE WHEN t.`Status` = 'cancelled_by_driver' OR t.`Status` = 'cancelled_by_client' THEN 1 END) / COUNT(*), 2) AS "Cancellation Rate"
+FROM Trips t 
+INNER JOIN Users u 
+ON t.Client_Id = u.Users_Id
+WHERE u.Banned = 'No'
+AND t.Request_at >= '2013-10-01'
+AND t.Request_at <= '2013-10-03'
+GROUP BY t.Request_at