leetcode 262 行程和用戶

SELECT t.`request_at` AS `Day`, ROUND(SUM(IF(t.status = 'completed', 0, 1))/COUNT(t.status) ,2) AS `Cancellation Rate` FROM Trips AS t
LEFT JOIN Users u1
ON u1.users_id = t.client_id
LEFT JOIN Users u2
ON u2.users_id = t.driver_id
WHERE u1.banned = 'No'
AND u2.banned = 'No'
AND t.`request_at` BETWEEN '2013-10-01' AND '2013-10-03'
GROUP BY t.`request_at`

SELECT t.`request_at` AS `Day`, ROUND(SUM(IF(t.status = 'completed', 0, 1))/COUNT(t.status) ,2) AS `Cancellation Rate` FROM Trips AS t
JOIN Users u1
ON u1.users_id = t.client_id AND u1.banned = 'No'
JOIN Users u2
ON u2.users_id = t.driver_id AND u2.banned = 'No'
WHERE t.`request_at` BETWEEN '2013-10-01' AND '2013-10-03'
GROUP BY t.`request_at`