DROP TABLE IF EXISTS mutations_and_quorum1; DROP TABLE IF EXISTS mutations_and_quorum2; CREATE TABLE mutations_and_quorum1 (`server_date` Date, `something` String) ENGINE = ReplicatedMergeTree('/clickhouse/tables/default/1/mutations_and_quorum', '1') PARTITION BY toYYYYMM(server_date) ORDER BY (server_date, something); CREATE TABLE mutations_and_quorum2 (`server_date` Date, `something` String) ENGINE = ReplicatedMergeTree('/clickhouse/tables/default/1/mutations_and_quorum', '2') PARTITION BY toYYYYMM(server_date) ORDER BY (server_date, something); SET insert_quorum=2; INSERT INTO mutations_and_quorum1 VALUES ('2019-01-01', 'test1'), ('2019-02-01', 'test2'), ('2019-03-01', 'test3'), ('2019-04-01', 'test4'), ('2019-05-01', 'test1'), ('2019-06-01', 'test2'), ('2019-07-01', 'test3'), ('2019-08-01', 'test4'), ('2019-09-01', 'test1'), ('2019-10-01', 'test2'), ('2019-11-01', 'test3'), ('2019-12-01', 'test4'); ALTER TABLE mutations_and_quorum1 DELETE WHERE something = 'test1' SETTINGS mutations_sync=2; SELECT COUNT() FROM mutations_and_quorum1; SELECT COUNT() FROM mutations_and_quorum2; SELECT COUNT() FROM system.mutations WHERE table like 'mutations_and_quorum%' and is_done = 0; DROP TABLE IF EXISTS mutations_and_quorum1; DROP TABLE IF EXISTS mutations_and_quorum2;