Я хочу посчитать, для каждого app_id
, сколько раз за event_type
: store_app_view
следовал event_type
: store_app_download
для одного и того же пользователя ("follow" означает event_time_utc
из store_app_view
старше event_time_utc
из store_app_download
).
Пример данных:
WITH
`project.dataset.dummy_data_init` AS (SELECT event_id FROM UNNEST(GENERATE_ARRAY(1, 10000)) event_id),
`project.dataset.dummy_data_completed` AS (SELECT event_id,
user_id[OFFSET(CAST(20 * RAND() - 0.5 AS INT64))] user_id,
app_id[OFFSET(CAST(100 * RAND() - 0.5 AS INT64))] app_id,
event_type[OFFSET(CAST(6 * RAND() - 0.5 AS INT64))] event_type,
event_time_utc[OFFSET(CAST(26 * RAND() - 0.5 AS INT64))] event_time_utc
FROM `project.dataset.dummy_data_init`,
(SELECT GENERATE_ARRAY(1, 20) user_id),
(SELECT GENERATE_ARRAY(1, 100) app_id),
(SELECT ['store_app_view', 'store_app_view', 'store_app_download','store_app_install','store_app_update','store_fetch_manifest'] event_type),
(SELECT GENERATE_TIMESTAMP_ARRAY('2020-01-01 00:00:00', '2020-01-26 00:00:00',
INTERVAL 1 DAY) AS event_time_utc))
Select * FROM `project.dataset.dummy_data_completed`
Спасибо!