Условие
Схема данных:
events
event_id string
event_time timestamp
user_id string null
anonymous_id string
session_id string
platform string -- web, ios, android
event_name string -- session_start, product_view, add_to_cart, checkout_start, purchase
source string null
medium string null
campaign string null
product_id string null
order_id string null
orders
order_id string
user_id…