mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-27 01:51:59 +00:00
31 lines
865 B
SQL
31 lines
865 B
SQL
DROP TABLE IF EXISTS table_with_column_ttl;
|
|
CREATE TABLE table_with_column_ttl
|
|
(
|
|
EventTime DateTime,
|
|
UserID UInt64,
|
|
Age UInt8 TTL EventTime + INTERVAL 3 MONTH
|
|
)
|
|
ENGINE MergeTree()
|
|
ORDER BY tuple()
|
|
SETTINGS min_bytes_for_wide_part = 0; -- column TTL doesn't work for compact parts
|
|
|
|
INSERT INTO table_with_column_ttl VALUES (now(), 1, 32);
|
|
|
|
INSERT INTO table_with_column_ttl VALUES (now() - INTERVAL 4 MONTH, 2, 45);
|
|
|
|
OPTIMIZE TABLE table_with_column_ttl FINAL;
|
|
|
|
SELECT UserID, Age FROM table_with_column_ttl ORDER BY UserID;
|
|
|
|
ALTER TABLE table_with_column_ttl MODIFY COLUMN Age REMOVE TTL;
|
|
|
|
SHOW CREATE TABLE table_with_column_ttl;
|
|
|
|
INSERT INTO table_with_column_ttl VALUES (now() - INTERVAL 10 MONTH, 3, 27);
|
|
|
|
OPTIMIZE TABLE table_with_column_ttl FINAL;
|
|
|
|
SELECT UserID, Age FROM table_with_column_ttl ORDER BY UserID;
|
|
|
|
DROP TABLE table_with_column_ttl;
|