drop table if exists max_parts_in_total; create table max_parts_in_total (x UInt64) ENGINE = MergeTree PARTITION BY x ORDER BY x SETTINGS max_parts_in_total = 10; INSERT INTO max_parts_in_total SELECT number FROM numbers(10); SELECT 1; INSERT INTO max_parts_in_total SELECT 123; -- { serverError 252 } drop table max_parts_in_total;