ClickHouse/tests/queries/0_stateless/02835_parallel_replicas_over_distributed.sql
2024-09-25 10:47:56 +00:00

48 lines
1.6 KiB
SQL

-- 1 shard
SELECT '-- 1 shard, 3 replicas';
DROP TABLE IF EXISTS test_d;
DROP TABLE IF EXISTS test;
CREATE TABLE test (id UInt64, date Date)
ENGINE = MergeTree
ORDER BY id;
CREATE TABLE IF NOT EXISTS test_d as test
ENGINE = Distributed(test_cluster_one_shard_three_replicas_localhost, currentDatabase(), test);
insert into test select *, today() from numbers(100);
SELECT count(), min(id), max(id), avg(id)
FROM test_d
SETTINGS enable_parallel_replicas = 2, max_parallel_replicas = 3, prefer_localhost_replica = 0, parallel_replicas_for_non_replicated_merge_tree=1;
insert into test select *, today() from numbers(100);
SELECT count(), min(id), max(id), avg(id)
FROM test_d
SETTINGS enable_parallel_replicas = 2, max_parallel_replicas = 3, prefer_localhost_replica = 0, parallel_replicas_for_non_replicated_merge_tree=1;
-- 2 shards
SELECT '-- 2 shards, 3 replicas each';
DROP TABLE IF EXISTS test2_d;
DROP TABLE IF EXISTS test2;
CREATE TABLE test2 (id UInt64, date Date)
ENGINE = MergeTree
ORDER BY id;
CREATE TABLE IF NOT EXISTS test2_d as test2
ENGINE = Distributed(test_cluster_two_shard_three_replicas_localhost, currentDatabase(), test2, id);
insert into test2 select *, today() from numbers(100);
SELECT count(), min(id), max(id), avg(id)
FROM test2_d
SETTINGS enable_parallel_replicas = 2, max_parallel_replicas = 3, prefer_localhost_replica = 0, parallel_replicas_for_non_replicated_merge_tree=1;
insert into test2 select *, today() from numbers(100);
SELECT count(), min(id), max(id), avg(id)
FROM test2_d
SETTINGS enable_parallel_replicas = 2, max_parallel_replicas = 3, prefer_localhost_replica = 0, parallel_replicas_for_non_replicated_merge_tree=1;