mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-03 21:12:28 +00:00
44 lines
2.3 KiB
MySQL
44 lines
2.3 KiB
MySQL
|
DROP TABLE IF EXISTS t_lwd_mutations;
|
||
|
|
|
||
|
|
CREATE TABLE t_lwd_mutations(id UInt64, v UInt64) ENGINE = MergeTree ORDER BY id;
|
||
|
|
INSERT INTO t_lwd_mutations SELECT number, 0 FROM numbers(1000);
|
||
|
|
|
||
|
|
SET mutations_sync = 2;
|
||
|
|
|
||
|
|
DELETE FROM t_lwd_mutations WHERE id % 10 = 0;
|
||
|
|
|
||
|
|
SELECT count(), sum(v), arraySort(groupUniqArray(id % 10)) FROM t_lwd_mutations;
|
||
|
|
SELECT count(), sum(rows), sum(has_lightweight_delete) FROM system.parts WHERE database = currentDatabase() AND table = 't_lwd_mutations' AND active;
|
||
|
|
|
||
|
|
ALTER TABLE t_lwd_mutations UPDATE v = 1 WHERE id % 4 = 0, DELETE WHERE id % 10 = 1;
|
||
|
|
|
||
|
|
SELECT count(), sum(v), arraySort(groupUniqArray(id % 10)) FROM t_lwd_mutations;
|
||
|
|
SELECT count(), sum(rows), sum(has_lightweight_delete) FROM system.parts WHERE database = currentDatabase() AND table = 't_lwd_mutations' AND active;
|
||
|
|
|
||
|
|
DELETE FROM t_lwd_mutations WHERE id % 10 = 2;
|
||
|
|
|
||
|
|
SELECT count(), sum(v), arraySort(groupUniqArray(id % 10)) FROM t_lwd_mutations;
|
||
|
|
SELECT count(), sum(rows), sum(has_lightweight_delete) FROM system.parts WHERE database = currentDatabase() AND table = 't_lwd_mutations' AND active;
|
||
|
|
|
||
|
|
ALTER TABLE t_lwd_mutations UPDATE v = 1 WHERE id % 4 = 1, DELETE WHERE id % 10 = 3;
|
||
|
|
|
||
|
|
SELECT count(), sum(v), arraySort(groupUniqArray(id % 10)) FROM t_lwd_mutations;
|
||
|
|
SELECT count(), sum(rows), sum(has_lightweight_delete) FROM system.parts WHERE database = currentDatabase() AND table = 't_lwd_mutations' AND active;
|
||
|
|
|
||
|
|
ALTER TABLE t_lwd_mutations UPDATE _row_exists = 0 WHERE id % 10 = 4, DELETE WHERE id % 10 = 5;
|
||
|
|
|
||
|
|
SELECT count(), sum(v), arraySort(groupUniqArray(id % 10)) FROM t_lwd_mutations;
|
||
|
|
SELECT count(), sum(rows), sum(has_lightweight_delete) FROM system.parts WHERE database = currentDatabase() AND table = 't_lwd_mutations' AND active;
|
||
|
|
|
||
|
|
ALTER TABLE t_lwd_mutations DELETE WHERE id % 10 = 6, UPDATE _row_exists = 0 WHERE id % 10 = 7;
|
||
|
|
|
||
|
|
SELECT count(), sum(v), arraySort(groupUniqArray(id % 10)) FROM t_lwd_mutations;
|
||
|
|
SELECT count(), sum(rows), sum(has_lightweight_delete) FROM system.parts WHERE database = currentDatabase() AND table = 't_lwd_mutations' AND active;
|
||
|
|
|
||
|
|
ALTER TABLE t_lwd_mutations APPLY DELETED MASK;
|
||
|
|
|
||
|
|
SELECT count(), sum(v), arraySort(groupUniqArray(id % 10)) FROM t_lwd_mutations;
|
||
|
|
SELECT count(), sum(rows), sum(has_lightweight_delete) FROM system.parts WHERE database = currentDatabase() AND table = 't_lwd_mutations' AND active;
|
||
|
|
|
||
|
|
DROP TABLE IF EXISTS t_lwd_mutations;
|