ClickHouse/tests/queries/0_stateless/03001_data_version_column.sql

DROP TABLE IF EXISTS t_data_version;

CREATE TABLE t_data_version (a UInt64, b UInt64) ENGINE = MergeTree ORDER BY a;

INSERT INTO t_data_version VALUES (1, 1);
INSERT INTO t_data_version VALUES (2, 2);

SELECT _part, _part_data_version, * FROM t_data_version ORDER BY a;

ALTER TABLE t_data_version UPDATE b = a * 100 WHERE 1 SETTINGS mutations_sync = 2;

SELECT _part, _part_data_version, * FROM t_data_version ORDER BY a;

INSERT INTO t_data_version VALUES (3, 3);

-- Check parts pruning.
SELECT _part, _part_data_version, * FROM t_data_version WHERE _part_data_version = 4 ORDER BY a SETTINGS max_rows_to_read = 1;

DROP TABLE t_data_version;