Question

我一直在思考如何做到这一点，一直在寻找答案，但无济于事。我实际上想知道我想要实现的目标是否真的可能。

我想做的是...

我想首先找到所有已触发事件“ app_remove”的用户（从而忽略所有未触发该事件的用户）。
找到所有这些用户之后，对于每个用户，我想检查在触发“ app_remove”事件之前的X分钟内触发的所有事件。

我基本上想知道用户在卸载应用程序之前要做的最后一件事。

是否可以为所有用户执行此操作，还是只能针对每个用户执行此操作？

我什至不知道从哪里开始进行分组操作，因此我目前选择一次尝试查看一个用户。这是我目前所在的位置，在编写了不完整的IF语句后被卡住了：

SELECT
  TIMESTAMP_MICROS(event_timestamp) as time_stamp, event_name, user_pseudo_id
FROM
  `mana-monsters.analytics_182655472.events_*`
WHERE
  _TABLE_SUFFIX BETWEEN '20180101' AND '20190121' AND
  user_pseudo_id = '026e1dd2cfe2344cdf2acf6dab2a123c' AND
  IF (event_name = 'app_remove')
GROUP BY
  time_stamp, event_name, user_pseudo_id
ORDER BY
  time_stamp DESC

希望我能提供足够的信息。

预先感谢您提供任何帮助或指导，以了解如何从理论上解决问题。

Answer 1

我认为使用INNER JOIN作为过滤器可能是一种选择。代码应如下所示：

SELECT
  TIMESTAMP_MICROS(a.event_timestamp) as time_stamp, a.event_name, a.user_pseudo_id
FROM
  `mana-monsters.analytics_182655472.events_*` a INNER JOIN (SELECT user_pseudo_id, event_timestamp from `mana-monsters.analytics_182655472.events_*` where event_name = 'app_remove') b on 
  a.user_pseudo_id = b.user_pseudo_id and b.event_timestamp - a.event_timestamp < 1000 and b.event_timestamp - a.event_timestamp >= 0
ORDER BY
  user_pseudo_id, time_stamp DESC

我一直在处理一些虚拟数据，并且对我有用：

#standardSQL
WITH my_table as(
select 1454911123456789 as event_timestamp, 'app_remove' as event_name, '1' as user_pseudo_id UNION ALL
select 1454911123456788 as event_timestamp, 'app_close' as event_name, '1' as user_pseudo_id UNION ALL
select 1454911123456778 as event_timestamp, 'connection_lost' as event_name, '1' as user_pseudo_id UNION ALL
select 1457911123451231 as event_timestamp, 'app_open' as event_name, '2' as user_pseudo_id UNION ALL
select 1457911123450123 as event_timestamp, 'app_close' as event_name, '2' as user_pseudo_id UNION ALL
select 1457911123450035 as event_timestamp, 'connection_lost' as event_name, '2' as user_pseudo_id UNION ALL
select 1459911123455664 as event_timestamp, 'app_remove' as event_name, '3' as user_pseudo_id UNION ALL
select 1459911123455456 as event_timestamp, 'app_close' as event_name, '3' as user_pseudo_id UNION ALL
select 1459911123455354 as event_timestamp, 'game_lost' as event_name, '3' as user_pseudo_id)
SELECT
  TIMESTAMP_MICROS(a.event_timestamp) as time_stamp, a.event_name, a.user_pseudo_id
FROM
  my_table a INNER JOIN (SELECT user_pseudo_id, event_timestamp from my_table where event_name = 'app_remove') b on 
  a.user_pseudo_id = b.user_pseudo_id and b.event_timestamp - a.event_timestamp < 1000 and b.event_timestamp - a.event_timestamp >= 0
ORDER BY
  user_pseudo_id, time_stamp DESC

虚拟数据太简单了，因此您可能必须进行一些修改才能适合您的用例。这只是显示可能解决方案的示例。

查询触发了“ app_remove”事件的用户，然后检查在该事件之前触发了什么事件

1 个答案: