false first 9000 false second 9000 false third 9000 2 events dailyhistory yellow_tripdata_staging events monthlyhistory yellow_tripdata_staging Engine=ReplacingMergeTree() PRIMARY KEY (tpep_pickup_datetime, id) ORDER BY (tpep_pickup_datetime, id) PARTITION BY (pickup_location_id, toYYYYMM(tpep_pickup_datetime)) sipHash64(id) % 3