mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-13 01:41:59 +00:00
44 lines
2.0 KiB
SQL
44 lines
2.0 KiB
SQL
-- Tags: long
|
|
|
|
drop table if exists tp_1;
|
|
drop table if exists tp_2;
|
|
|
|
create table tp_1 (x Int32, y Int32, projection p (select x, y order by x)) engine = ReplicatedMergeTree('/clickhouse/tables/{shard}/01710_projection_fetch_' || currentDatabase(), '1_{replica}') order by y settings min_rows_for_compact_part = 2, min_rows_for_wide_part = 4, min_bytes_for_compact_part = 16, min_bytes_for_wide_part = 32;
|
|
|
|
create table tp_2 (x Int32, y Int32, projection p (select x, y order by x)) engine = ReplicatedMergeTree('/clickhouse/tables/{shard}/01710_projection_fetch_' || currentDatabase(), '2_{replica}') order by y settings min_rows_for_compact_part = 2, min_rows_for_wide_part = 4, min_bytes_for_compact_part = 16, min_bytes_for_wide_part = 32;
|
|
|
|
insert into tp_1 select number, number from numbers(3);
|
|
|
|
system sync replica tp_2;
|
|
select * from tp_2 order by x;
|
|
|
|
insert into tp_1 select number, number from numbers(5);
|
|
|
|
system sync replica tp_2;
|
|
select * from tp_2 order by x;
|
|
|
|
-- test projection creation, materialization, clear and drop
|
|
alter table tp_1 add projection pp (select x, count() group by x);
|
|
system sync replica tp_2;
|
|
select count() from system.projection_parts where database = currentDatabase() and table = 'tp_2' and name = 'pp' and active;
|
|
show create table tp_2;
|
|
|
|
-- all other three operations are mutations
|
|
set mutations_sync = 2;
|
|
alter table tp_1 materialize projection pp;
|
|
select count() from system.projection_parts where database = currentDatabase() and table = 'tp_2' and name = 'pp' and active;
|
|
show create table tp_2;
|
|
|
|
alter table tp_1 clear projection pp;
|
|
system sync replica tp_2;
|
|
select * from system.projection_parts where database = currentDatabase() and table = 'tp_2' and name = 'pp' and active;
|
|
show create table tp_2;
|
|
|
|
alter table tp_1 drop projection pp;
|
|
system sync replica tp_2;
|
|
select * from system.projection_parts where database = currentDatabase() and table = 'tp_2' and name = 'pp' and active;
|
|
show create table tp_2;
|
|
|
|
drop table if exists tp_1;
|
|
drop table if exists tp_2;
|