1 create table main_table (number UInt64) engine = MergeTree order by tuple() create table mt_1 (n UInt64, s String) engine = MergeTree order by tuple() create table mt_2 (n UInt64, s String) engine = MergeTree order by tuple() create table mt_3 (n UInt64, s String) engine = MergeTree order by tuple() create table mt_4 (n UInt64, s String) engine = MergeTree order by tuple() create materialized view mv_1 to mt_1 as select number as n, toString(number) as s from main_table where number % 13 != 0 create materialized view mv_2 to mt_2 as select number as n, toString(number) as s from main_table where number % 13 != 1 create materialized view mv_3 to mt_3 as select number as n, toString(number) as s from main_table where number % 13 != 3 create materialized view mv_4 to mt_4 as select number as n, toString(number) as s from main_table where number % 13 != 4 SYSTEM STOP MERGES main_table SYSTEM STOP MERGES mt_1 SYSTEM STOP MERGES mt_2 SYSTEM STOP MERGES mt_3 SYSTEM STOP MERGES mt_4 insert into main_table select number from numbers(10000000) drop table if exists mv_1 drop table if exists mv_2 drop table if exists mv_3 drop table if exists mv_4 drop table if exists main_table drop table if exists mt_1 drop table if exists mt_2 drop table if exists mt_3 drop table if exists mt_4