From ; https://community.home-assistant.io/t/how-to-keep-your-recorder-database-size-under-control/295795
SELECT COUNT(*) as cnt, SUM(LENGTH(event_data)) as bytes, event_type FROM events GROUP BY event_type ORDER BY cnt DESC
and
SELECT COUNT(*) AS cnt, COUNT(*) * 100 / (SELECT COUNT(*) FROM states) AS cnt_pct, SUM(LENGTH(attributes)) AS bytes, SUM(LENGTH(attributes)) * 100 / (SELECT SUM(LENGTH(attributes)) FROM states) AS bytes_pct, entity_id FROM states GROUP BY entity_id ORDER BY cnt DESC
Delete enitities records;
DELETE FROM states where entity_id IN ('sensor.temperature' , 'sensor.battery_temperature' , 'sensor.28_63e8d4122101_temperature', 'sensor.battery_voltage');
Backup the database;
sudo rm -f /volume2/cctv/backups/1_backup.db sudo sqlite3 /volume3/sudo sqlite3 /volume3/docker-storage/home-assistant/config/home-assistant_v2.db ".backup /volume2/cctv/backups/1_backup.db"/home-assistant/config/home-assistant_v2.db ".backup /volume2/cctv/backups/1_backup.db"