mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-17 03:42:48 +00:00
82 lines
3.8 KiB
SQL
82 lines
3.8 KiB
SQL
DROP TABLE IF EXISTS pr_1;
|
|
DROP TABLE IF EXISTS pr_2;
|
|
DROP TABLE IF EXISTS numbers_1e6;
|
|
|
|
CREATE TABLE pr_1 (`a` UInt32) ENGINE = MergeTree ORDER BY a PARTITION BY a % 10 AS
|
|
SELECT 10 * intDiv(number, 10) + 1 FROM numbers(1_000_000);
|
|
|
|
CREATE TABLE pr_2 (`a` UInt32) ENGINE = MergeTree ORDER BY a AS
|
|
SELECT * FROM numbers(1_000_000);
|
|
|
|
WITH filtered_groups AS (SELECT a FROM pr_1 WHERE a >= 10000)
|
|
SELECT count() FROM pr_2 INNER JOIN filtered_groups ON pr_2.a = filtered_groups.a;
|
|
|
|
WITH filtered_groups AS (SELECT a FROM pr_1 WHERE a >= 10000)
|
|
SELECT count() FROM pr_2 INNER JOIN filtered_groups ON pr_2.a = filtered_groups.a
|
|
SETTINGS allow_experimental_parallel_reading_from_replicas = 1, parallel_replicas_for_non_replicated_merge_tree = 1, cluster_for_parallel_replicas = 'test_cluster_one_shard_three_replicas_localhost', max_parallel_replicas = 3;
|
|
|
|
-- Testing that it is disabled for allow_experimental_analyzer=0. With analyzer it will be supported (with correct result)
|
|
WITH filtered_groups AS (SELECT a FROM pr_1 WHERE a >= 10000)
|
|
SELECT count() FROM pr_2 INNER JOIN filtered_groups ON pr_2.a = filtered_groups.a
|
|
SETTINGS allow_experimental_analyzer = 0, allow_experimental_parallel_reading_from_replicas = 2, parallel_replicas_for_non_replicated_merge_tree = 1, cluster_for_parallel_replicas = 'test_cluster_one_shard_three_replicas_localhost', max_parallel_replicas = 3; -- { serverError SUPPORT_IS_DISABLED }
|
|
|
|
-- Disabled for any value of allow_experimental_parallel_reading_from_replicas != 1, not just 2
|
|
WITH filtered_groups AS (SELECT a FROM pr_1 WHERE a >= 10000)
|
|
SELECT count() FROM pr_2 INNER JOIN filtered_groups ON pr_2.a = filtered_groups.a
|
|
SETTINGS allow_experimental_analyzer = 0, allow_experimental_parallel_reading_from_replicas = 512, parallel_replicas_for_non_replicated_merge_tree = 1, cluster_for_parallel_replicas = 'test_cluster_one_shard_three_replicas_localhost', max_parallel_replicas = 3; -- { serverError SUPPORT_IS_DISABLED }
|
|
|
|
-- Sanitizer
|
|
SELECT count() FROM pr_2 JOIN numbers(10) as pr_1 ON pr_2.a = pr_1.number
|
|
SETTINGS allow_experimental_parallel_reading_from_replicas = 1, parallel_replicas_for_non_replicated_merge_tree = 1, cluster_for_parallel_replicas = 'test_cluster_one_shard_three_replicas_localhost', max_parallel_replicas = 3;
|
|
|
|
-- Parallel replicas detection should work inside subqueries
|
|
SELECT *
|
|
FROM
|
|
(
|
|
WITH filtered_groups AS (SELECT a FROM pr_1 WHERE a >= 10000)
|
|
SELECT count() FROM pr_2 INNER JOIN filtered_groups ON pr_2.a = filtered_groups.a
|
|
)
|
|
SETTINGS allow_experimental_parallel_reading_from_replicas = 1, parallel_replicas_for_non_replicated_merge_tree = 1, cluster_for_parallel_replicas = 'test_cluster_one_shard_three_replicas_localhost', max_parallel_replicas = 3;
|
|
|
|
-- Subquery + subquery
|
|
SELECT count()
|
|
FROM
|
|
(
|
|
SELECT c + 1
|
|
FROM
|
|
(
|
|
WITH filtered_groups AS (SELECT a FROM pr_1 WHERE a >= 10000)
|
|
SELECT count() as c FROM pr_2 INNER JOIN filtered_groups ON pr_2.a = filtered_groups.a
|
|
)
|
|
)
|
|
SETTINGS allow_experimental_parallel_reading_from_replicas = 1, parallel_replicas_for_non_replicated_merge_tree = 1, cluster_for_parallel_replicas = 'test_cluster_one_shard_three_replicas_localhost', max_parallel_replicas = 3;
|
|
|
|
CREATE TABLE numbers_1e6
|
|
(
|
|
`n` UInt64
|
|
)
|
|
ENGINE = MergeTree
|
|
ORDER BY n
|
|
AS SELECT * FROM numbers(1_000_000);
|
|
|
|
-- Same but nested CTE's
|
|
WITH
|
|
cte1 AS
|
|
(
|
|
SELECT n
|
|
FROM numbers_1e6
|
|
),
|
|
cte2 AS
|
|
(
|
|
SELECT n
|
|
FROM numbers_1e6
|
|
WHERE n IN (cte1)
|
|
)
|
|
SELECT count()
|
|
FROM cte2
|
|
SETTINGS allow_experimental_parallel_reading_from_replicas = 1, parallel_replicas_for_non_replicated_merge_tree = 1, cluster_for_parallel_replicas = 'test_cluster_one_shard_three_replicas_localhost', max_parallel_replicas = 3;
|
|
|
|
DROP TABLE IF EXISTS numbers_1e6;
|
|
DROP TABLE IF EXISTS pr_1;
|
|
DROP TABLE IF EXISTS pr_2;
|