DROP TABLE IF EXISTS t_materialize_column; CREATE TABLE t_materialize_column (i Int32) ENGINE = MergeTree ORDER BY i PARTITION BY i SETTINGS min_bytes_for_wide_part = 0; INSERT INTO t_materialize_column VALUES (1); ALTER TABLE t_materialize_column ADD COLUMN s LowCardinality(String) DEFAULT toString(i); ALTER TABLE t_materialize_column MATERIALIZE COLUMN s SETTINGS mutations_sync = 2; SELECT name, column, type FROM system.parts_columns WHERE table = 't_materialize_column' AND database = currentDatabase() AND active ORDER BY name, column; SELECT '==========='; INSERT INTO t_materialize_column (i) VALUES (2); SELECT name, column, type FROM system.parts_columns WHERE table = 't_materialize_column' AND database = currentDatabase() AND active ORDER BY name, column; SELECT '==========='; ALTER TABLE t_materialize_column ADD INDEX s_bf (s) TYPE bloom_filter(0.01) GRANULARITY 1; ALTER TABLE t_materialize_column MATERIALIZE INDEX s_bf SETTINGS mutations_sync = 2; SELECT name, column, type FROM system.parts_columns WHERE table = 't_materialize_column' AND database = currentDatabase() AND active ORDER BY name, column; SELECT * FROM t_materialize_column ORDER BY i; DROP TABLE t_materialize_column;