mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-22 15:42:02 +00:00
44 lines
1.6 KiB
SQL
44 lines
1.6 KiB
SQL
DROP TABLE IF EXISTS t_materialize_delete;
|
|
|
|
CREATE TABLE t_materialize_delete (id UInt64, v UInt64)
|
|
ENGINE = MergeTree ORDER BY id PARTITION BY id % 10;
|
|
|
|
SET mutations_sync = 2;
|
|
|
|
INSERT INTO t_materialize_delete SELECT number, number FROM numbers(100);
|
|
|
|
SELECT 'Inserted';
|
|
|
|
SELECT count(), sum(v) FROM t_materialize_delete;
|
|
SELECT count(), sum(rows), sum(has_lightweight_delete) FROM system.parts WHERE database = currentDatabase() AND table = 't_materialize_delete' AND active;
|
|
|
|
SELECT 'Lighweight deleted';
|
|
|
|
DELETE FROM t_materialize_delete WHERE id % 7 = 3;
|
|
|
|
SELECT count(), sum(v) FROM t_materialize_delete;
|
|
SELECT count(), sum(rows), sum(has_lightweight_delete) FROM system.parts WHERE database = currentDatabase() AND table = 't_materialize_delete' AND active;
|
|
|
|
SELECT 'Mask applied';
|
|
|
|
ALTER TABLE t_materialize_delete APPLY DELETED MASK;
|
|
|
|
SELECT count(), sum(v) FROM t_materialize_delete;
|
|
SELECT count(), sum(rows), sum(has_lightweight_delete) FROM system.parts WHERE database = currentDatabase() AND table = 't_materialize_delete' AND active;
|
|
|
|
SELECT 'Lighweight deleted';
|
|
|
|
DELETE FROM t_materialize_delete WHERE id % 7 = 4;
|
|
|
|
SELECT count(), sum(v) FROM t_materialize_delete;
|
|
SELECT count(), sum(rows), sum(has_lightweight_delete) FROM system.parts WHERE database = currentDatabase() AND table = 't_materialize_delete' AND active;
|
|
|
|
SELECT 'Mask applied in partition';
|
|
|
|
ALTER TABLE t_materialize_delete APPLY DELETED MASK IN PARTITION 5;
|
|
|
|
SELECT count(), sum(v) FROM t_materialize_delete;
|
|
SELECT count(), sum(rows), sum(has_lightweight_delete) FROM system.parts WHERE database = currentDatabase() AND table = 't_materialize_delete' AND active;
|
|
|
|
DROP TABLE t_materialize_delete;
|