mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-18 21:51:57 +00:00
19 lines
586 B
MySQL
19 lines
586 B
MySQL
|
DROP TABLE IF EXISTS mt;
|
||
|
|
|
||
|
|
CREATE TABLE mt (x UInt64) ENGINE = MergeTree ORDER BY x SETTINGS max_part_removal_threads = 16, cleanup_delay_period = 1, cleanup_delay_period_random_add = 0, old_parts_lifetime = 1, parts_to_delay_insert = 100000, parts_to_throw_insert = 100000;
|
||
|
|
|
||
|
|
SYSTEM STOP MERGES;
|
||
|
|
|
||
|
|
SET max_block_size = 1, min_insert_block_size_rows = 0, min_insert_block_size_bytes = 0;
|
||
|
|
INSERT INTO mt SELECT * FROM numbers(1000);
|
||
|
|
SET max_block_size = 65536;
|
||
|
|
|
||
|
|
SELECT count(), sum(x) FROM mt;
|
||
|
|
|
||
|
|
SYSTEM START MERGES;
|
||
|
|
OPTIMIZE TABLE mt FINAL;
|
||
|
|
|
||
|
|
SELECT count(), sum(x) FROM mt;
|
||
|
|
|
||
|
|
DROP TABLE mt;
|