# Write your MySQL query statement below
3497. 分析订阅转化
表:UserActivity
+------------------+---------+ | Column Name | Type | +------------------+---------+ | user_id | int | | activity_date | date | | activity_type | varchar | | activity_duration| int | +------------------+---------+ (user_id, activity_date, activity_type) 是这张表的唯一主键。 activity_type 是('free_trial', 'paid', 'cancelled')中的一个。 activity_duration 是用户当天在平台上花费的分钟数。 每一行表示一个用户在特定日期的活动。
订阅服务想要分析用户行为模式。公司提供7天免费试用,试用结束后,用户可以选择订阅 付费计划 或 取消。编写解决方案:
2
位)2
位)返回结果表以 user_id
升序 排序。
结果格式如下所示。
示例:
输入:
UserActivity 表:
+---------+---------------+---------------+-------------------+ | user_id | activity_date | activity_type | activity_duration | +---------+---------------+---------------+-------------------+ | 1 | 2023-01-01 | free_trial | 45 | | 1 | 2023-01-02 | free_trial | 30 | | 1 | 2023-01-05 | free_trial | 60 | | 1 | 2023-01-10 | paid | 75 | | 1 | 2023-01-12 | paid | 90 | | 1 | 2023-01-15 | paid | 65 | | 2 | 2023-02-01 | free_trial | 55 | | 2 | 2023-02-03 | free_trial | 25 | | 2 | 2023-02-07 | free_trial | 50 | | 2 | 2023-02-10 | cancelled | 0 | | 3 | 2023-03-05 | free_trial | 70 | | 3 | 2023-03-06 | free_trial | 60 | | 3 | 2023-03-08 | free_trial | 80 | | 3 | 2023-03-12 | paid | 50 | | 3 | 2023-03-15 | paid | 55 | | 3 | 2023-03-20 | paid | 85 | | 4 | 2023-04-01 | free_trial | 40 | | 4 | 2023-04-03 | free_trial | 35 | | 4 | 2023-04-05 | paid | 45 | | 4 | 2023-04-07 | cancelled | 0 | +---------+---------------+---------------+-------------------+
输出:
+---------+--------------------+-------------------+ | user_id | trial_avg_duration | paid_avg_duration | +---------+--------------------+-------------------+ | 1 | 45.00 | 76.67 | | 3 | 70.00 | 63.33 | | 4 | 37.50 | 45.00 | +---------+--------------------+-------------------+
解释:
结果表仅包括从免费试用转为付费订阅的用户(用户 1,3 和 4),并且以 user_id 升序排序。
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