mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-11 00:42:29 +00:00
112 lines
2.9 KiB
SQL
112 lines
2.9 KiB
SQL
DROP TABLE IF EXISTS table_with_single_pk;
|
|
|
|
CREATE TABLE table_with_single_pk
|
|
(
|
|
key UInt8,
|
|
value String
|
|
)
|
|
ENGINE = MergeTree
|
|
ORDER BY key;
|
|
|
|
INSERT INTO table_with_single_pk SELECT number, toString(number % 10) FROM numbers(10000000);
|
|
|
|
ALTER TABLE table_with_single_pk DELETE WHERE key % 77 = 0 SETTINGS mutations_sync = 1;
|
|
|
|
SYSTEM FLUSH LOGS;
|
|
|
|
-- Memory usage for all mutations must be almost constant and less than
|
|
-- read_bytes.
|
|
SELECT
|
|
DISTINCT read_bytes >= peak_memory_usage
|
|
FROM
|
|
system.part_log
|
|
WHERE event_type = 'MutatePart' AND table = 'table_with_single_pk' AND database = currentDatabase();
|
|
|
|
DROP TABLE IF EXISTS table_with_single_pk;
|
|
|
|
DROP TABLE IF EXISTS table_with_multi_pk;
|
|
|
|
CREATE TABLE table_with_multi_pk
|
|
(
|
|
key1 UInt8,
|
|
key2 UInt32,
|
|
key3 DateTime64(6, 'UTC'),
|
|
value String
|
|
)
|
|
ENGINE = MergeTree
|
|
ORDER BY (key1, key2, key3);
|
|
|
|
INSERT INTO table_with_multi_pk SELECT number % 32, number, toDateTime('2019-10-01 00:00:00'), toString(number % 10) FROM numbers(10000000);
|
|
|
|
ALTER TABLE table_with_multi_pk DELETE WHERE key1 % 77 = 0 SETTINGS mutations_sync = 1;
|
|
|
|
SYSTEM FLUSH LOGS;
|
|
|
|
-- Memory usage for all mutations must be almost constant and less than
|
|
-- read_bytes.
|
|
SELECT
|
|
DISTINCT read_bytes >= peak_memory_usage
|
|
FROM
|
|
system.part_log
|
|
WHERE event_type = 'MutatePart' AND table = 'table_with_multi_pk' AND database = currentDatabase();
|
|
|
|
DROP TABLE IF EXISTS table_with_multi_pk;
|
|
|
|
|
|
DROP TABLE IF EXISTS table_with_function_pk;
|
|
|
|
|
|
CREATE TABLE table_with_function_pk
|
|
(
|
|
key1 UInt8,
|
|
key2 UInt32,
|
|
key3 DateTime64(6, 'UTC'),
|
|
value String
|
|
)
|
|
ENGINE = MergeTree
|
|
ORDER BY (cast(value as UInt64), key2);
|
|
|
|
INSERT INTO table_with_function_pk SELECT number % 32, number, toDateTime('2019-10-01 00:00:00'), toString(number % 10) FROM numbers(10000000);
|
|
|
|
ALTER TABLE table_with_function_pk DELETE WHERE key1 % 77 = 0 SETTINGS mutations_sync = 1;
|
|
|
|
SYSTEM FLUSH LOGS;
|
|
|
|
-- Memory usage for all mutations must be almost constant and less than
|
|
-- read_bytes.
|
|
SELECT
|
|
DISTINCT read_bytes >= peak_memory_usage
|
|
FROM
|
|
system.part_log
|
|
WHERE event_type = 'MutatePart' AND table = 'table_with_function_pk' AND database = currentDatabase();
|
|
|
|
DROP TABLE IF EXISTS table_with_function_pk;
|
|
|
|
DROP TABLE IF EXISTS table_without_pk;
|
|
|
|
CREATE TABLE table_without_pk
|
|
(
|
|
key1 UInt8,
|
|
key2 UInt32,
|
|
key3 DateTime64(6, 'UTC'),
|
|
value String
|
|
)
|
|
ENGINE = MergeTree
|
|
ORDER BY tuple();
|
|
|
|
INSERT INTO table_without_pk SELECT number % 32, number, toDateTime('2019-10-01 00:00:00'), toString(number % 10) FROM numbers(10000000);
|
|
|
|
ALTER TABLE table_without_pk DELETE WHERE key1 % 77 = 0 SETTINGS mutations_sync = 1;
|
|
|
|
SYSTEM FLUSH LOGS;
|
|
|
|
-- Memory usage for all mutations must be almost constant and less than
|
|
-- read_bytes.
|
|
SELECT
|
|
DISTINCT read_bytes >= peak_memory_usage
|
|
FROM
|
|
system.part_log
|
|
WHERE event_type = 'MutatePart' AND table = 'table_without_pk' AND database = currentDatabase();
|
|
|
|
DROP TABLE IF EXISTS table_without_pk;
|