mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-11 17:02:25 +00:00
30 lines
1.1 KiB
SQL
30 lines
1.1 KiB
SQL
-- Tags: no-s3-storage
|
|
|
|
-- { echo }
|
|
|
|
DROP TABLE IF EXISTS in_memory;
|
|
|
|
CREATE TABLE in_memory (a UInt32) ENGINE = MergeTree ORDER BY a SETTINGS min_rows_for_compact_part = 1000, min_bytes_for_wide_part = 10485760;
|
|
INSERT INTO in_memory VALUES (1);
|
|
INSERT INTO in_memory VALUES (2);
|
|
SELECT name, active, part_type FROM system.parts WHERE database = currentDatabase() AND table = 'in_memory';
|
|
SELECT * FROM in_memory ORDER BY a;
|
|
|
|
-- no WAL remove since parts are still in use
|
|
DETACH TABLE in_memory;
|
|
ATTACH TABLE in_memory;
|
|
SELECT name, active, part_type FROM system.parts WHERE database = currentDatabase() AND table = 'in_memory';
|
|
SELECT * FROM in_memory ORDER BY a;
|
|
|
|
-- WAL should be removed, since on disk part covers all parts in WAL
|
|
OPTIMIZE TABLE in_memory;
|
|
DETACH TABLE in_memory;
|
|
ATTACH TABLE in_memory;
|
|
SELECT name, active, part_type FROM system.parts WHERE database = currentDatabase() AND table = 'in_memory';
|
|
|
|
-- check that the WAL will be reinitialized after remove
|
|
INSERT INTO in_memory VALUES (3);
|
|
DETACH TABLE in_memory;
|
|
ATTACH TABLE in_memory;
|
|
SELECT * FROM in_memory ORDER BY a;
|