cohort9-snippet.sql

WITH analytics_data AS (
  SELECT user_pseudo_id, event_timestamp, event_name, 
    -- This value is different
    UNIX_MICROS(TIMESTAMP("2018-07-29 00:00:00", "-7:00")) AS start_day,
    3600*1000*1000*24*7 AS one_week_micros
  FROM `firebase-public-project.analytics_153293282.events_*`
  -- These values have changed                          
  WHERE _table_suffix BETWEEN '20180728' AND '20180827'
)
SELECT week_0_cohort / week_0_cohort AS week_0_pct,
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