-- Tags: no-parallel SET allow_suspicious_ttl_expressions = 1; drop table if exists ttl; create table ttl (d Date, a Int) engine = MergeTree order by a partition by toDayOfMonth(d); insert into ttl values (toDateTime('2000-10-10 00:00:00'), 1); insert into ttl values (toDateTime('2000-10-10 00:00:00'), 2); insert into ttl values (toDateTime('2100-10-10 00:00:00'), 3); insert into ttl values (toDateTime('2100-10-10 00:00:00'), 4); set mutations_sync = 2; alter table ttl modify ttl d + interval 1 day; select * from ttl order by a; select '============='; drop table if exists ttl; create table ttl (i Int, s String) engine = MergeTree order by i; insert into ttl values (1, 'a') (2, 'b') (3, 'c') (4, 'd'); alter table ttl modify ttl i % 2 = 0 ? today() - 10 : toDate('2100-01-01'); select * from ttl order by i; select '============='; alter table ttl modify ttl toDate('2000-01-01'); select * from ttl order by i; select '============='; drop table if exists ttl; create table ttl (i Int, s String) engine = MergeTree order by i; insert into ttl values (1, 'a') (2, 'b') (3, 'c') (4, 'd'); alter table ttl modify column s String ttl i % 2 = 0 ? today() - 10 : toDate('2100-01-01'); select * from ttl order by i; select '============='; alter table ttl modify column s String ttl toDate('2000-01-01'); select * from ttl order by i; select '============='; drop table if exists ttl; create table ttl (d Date, i Int, s String) engine = MergeTree order by i; insert into ttl values (toDate('2000-01-02'), 1, 'a') (toDate('2000-01-03'), 2, 'b') (toDate('2080-01-01'), 3, 'c') (toDate('2080-01-03'), 4, 'd'); alter table ttl modify ttl i % 3 = 0 ? today() - 10 : toDate('2100-01-01'); select i, s from ttl order by i; select '============='; alter table ttl modify column s String ttl d + interval 1 month; select i, s from ttl order by i; select '============='; drop table if exists ttl; create table ttl (i Int, s String, t String) engine = MergeTree order by i; insert into ttl values (1, 'a', 'aa') (2, 'b', 'bb') (3, 'c', 'cc') (4, 'd', 'dd'); alter table ttl modify column s String ttl i % 3 = 0 ? today() - 10 : toDate('2100-01-01'), modify column t String ttl i % 3 = 1 ? today() - 10 : toDate('2100-01-01'); select i, s, t from ttl order by i; -- MATERIALIZE TTL ran only once select count() from system.mutations where database = currentDatabase() and table = 'ttl' and is_done; select '============='; drop table if exists ttl; -- Nothing changed, don't run mutation create table ttl (i Int, s String ttl toDate('2000-01-02')) engine = MergeTree order by i; alter table ttl modify column s String ttl toDate('2000-01-02'); select count() from system.mutations where database = currentDatabase() and table = 'ttl' and is_done; drop table if exists ttl;