如何在 BigQuery 中 select 多个自定义 Firebase 事件参数？

Question

我将 Firebase 事件导出到 BigQuery，现在我正尝试 select 来自某个事件的两个参数。这是 selecting 一个参数的查询：

select event_dim.params.value.int_value as level_id
from [com_company_appname_ANDROID.app_events_20161210]
where event_dim.name = "level_replays_until_first_victory" and  event_dim.params.key = "level_id"

两个参数都是整型值，第一个参数的名字是level_id，第二个参数的名字是count。我想要显示的是第一列中的 level_id 和第二列中的 count。

Answer 1

下面将适用于 BigQuery Standard SQL

SELECT 
  (SELECT params.value.int_value FROM x.params 
                                 WHERE params.key = 'level_id') AS level_id,
  (SELECT params.value.int_value FROM x.params 
                                 WHERE params.key = 'count') AS count
FROM `com_company_appname_ANDROID.app_events_20161210`, UNNEST(event_dim) AS x
WHERE x.name  = 'level_replays_until_first_victory'

另请参阅 Migrating from legacy SQL，以防您受困于旧版 SQL

Answer 2

我喜欢之前的解决方案！这是我提出的同一问题的替代解决方案。我欢迎就哪种解决方案更 efficient/cheaper 以及原因发表评论。

SELECT event_param1.value.int_value AS level_id, 
event_param2.value.int_value AS count
FROM `com_company_appname_ANDROID.app_events_20161210`,
UNNEST(event_dim) event,
UNNEST(event.params) as event_param1,
UNNEST(event.params) as event_param2
WHERE event.name = 'level_replays_until_first_victory'
AND event_param1.key = 'level_id'
AND event_param2.key = 'count'

Answer 3

另一个我觉得很方便的解决方案是使用 User Defined Functions to analyze user properties and event parameters

#Standard-SQL

#UDF for event parameters
CREATE TEMP FUNCTION paramValueByKey(k STRING, params ARRAY<STRUCT<key STRING, value STRUCT<string_value STRING, int_value INT64, float_value FLOAT64, double_value FLOAT64 >>>) AS (
  (SELECT x.value FROM UNNEST(params) x WHERE x.key=k)
);

#UDF for user properties
CREATE TEMP FUNCTION propertyValueByKey(k STRING, properties ARRAY<STRUCT<key STRING, value STRUCT<value STRUCT<string_value STRING, int_value INT64, float_value FLOAT64, double_value FLOAT64>, set_timestamp_usec INT64, index INT64 > >>) AS (
  (SELECT x.value.value FROM UNNEST(properties) x WHERE x.key=k)
);

#Query the sample dataset, unnesting the events and turn 'api_version', 'round' and 'type_of_game' into columns 
SELECT 
  user_dim.user_id,
  event.name,
  propertyValueByKey('api_version', user_dim.user_properties).string_value AS api_version,
 paramValueByKey('round', event.params).int_value as round,
 paramValueByKey('type_of_game', event.params).string_value as type_of_game
FROM `firebase-analytics-sample-data.android_dataset.app_events_20160607`,
UNNEST(event_dim) as event
WHERE event.name = 'round_completed'
LIMIT 10;

Answer 4

第二个解决方案的更新

SELECT 
    event_param1.value.int_value AS level_id, 
    event_param2.value.int_value AS count
FROM 
   `com_company_appname_ANDROID.app_events_20161210`,
UNNEST(event_params) as event_param1,
UNNEST(event_params) as event_param2
WHERE event_name = 'level_replays_until_first_victory'
AND
   event_param1.key = 'level_id' 
AND
   event_param2.key = 'count'

如何在 BigQuery 中 select 多个自定义 Firebase 事件参数？

How to select multiple custom Firebase event parameters in BigQuery?

firebase

google-bigquery

firebase-analytics