clickhouse-migrate-test-support-0.1.0.0: test/fixtures/kansoku/steps/0008_account_scoped_metrics/statement-16.sql
INSERT INTO analytics.dau (account_id, day, users)
SELECT
account_id,
toDate(occurred_at) AS day,
uniqCombinedState(if(user_id != '', user_id, anonymous_id)) AS users
FROM analytics.events_raw
WHERE user_id != '' OR anonymous_id != ''
GROUP BY account_id, day;