mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-27 10:02:01 +00:00
73 lines
2.4 KiB
SQL
73 lines
2.4 KiB
SQL
DROP TABLE IF EXISTS prop_table;
|
|
|
|
CREATE TABLE prop_table
|
|
(
|
|
column_default UInt64 DEFAULT 42,
|
|
column_materialized UInt64 MATERIALIZED column_default * 42,
|
|
column_alias UInt64 ALIAS column_default + 1,
|
|
column_codec String CODEC(ZSTD(10)),
|
|
column_comment Date COMMENT 'Some comment',
|
|
column_ttl UInt64 TTL column_comment + INTERVAL 1 MONTH
|
|
)
|
|
ENGINE MergeTree()
|
|
ORDER BY tuple()
|
|
TTL column_comment + INTERVAL 2 MONTH;
|
|
|
|
SHOW CREATE TABLE prop_table;
|
|
|
|
SYSTEM STOP TTL MERGES prop_table;
|
|
|
|
INSERT INTO prop_table (column_codec, column_comment, column_ttl) VALUES ('str', toDate('2019-10-01'), 1);
|
|
|
|
SELECT column_default, column_materialized, column_alias, column_codec, column_comment, column_ttl FROM prop_table;
|
|
|
|
ALTER TABLE prop_table MODIFY COLUMN column_comment REMOVE COMMENT;
|
|
|
|
SHOW CREATE TABLE prop_table;
|
|
|
|
ALTER TABLE prop_table MODIFY COLUMN column_codec REMOVE CODEC;
|
|
|
|
SHOW CREATE TABLE prop_table;
|
|
|
|
ALTER TABLE prop_table MODIFY COLUMN column_alias REMOVE ALIAS;
|
|
|
|
SELECT column_default, column_materialized, column_alias, column_codec, column_comment, column_ttl FROM prop_table;
|
|
|
|
SHOW CREATE TABLE prop_table;
|
|
|
|
INSERT INTO prop_table (column_alias, column_codec, column_comment, column_ttl) VALUES (33, 'trs', toDate('2020-01-01'), 2);
|
|
|
|
SELECT column_default, column_materialized, column_alias, column_codec, column_comment, column_ttl FROM prop_table ORDER BY column_ttl;
|
|
|
|
ALTER TABLE prop_table MODIFY COLUMN column_materialized REMOVE MATERIALIZED;
|
|
|
|
SHOW CREATE TABLE prop_table;
|
|
|
|
INSERT INTO prop_table (column_materialized, column_alias, column_codec, column_comment, column_ttl) VALUES (11, 44, 'rts', toDate('2020-02-01'), 3);
|
|
|
|
SELECT column_default, column_materialized, column_alias, column_codec, column_comment, column_ttl FROM prop_table ORDER BY column_ttl;
|
|
|
|
ALTER TABLE prop_table MODIFY COLUMN column_default REMOVE DEFAULT;
|
|
|
|
SHOW CREATE TABLE prop_table;
|
|
|
|
INSERT INTO prop_table (column_materialized, column_alias, column_codec, column_comment, column_ttl) VALUES (22, 55, 'tsr', toDate('2020-03-01'), 4);
|
|
|
|
SELECT column_default, column_materialized, column_alias, column_codec, column_comment, column_ttl FROM prop_table ORDER BY column_ttl;
|
|
|
|
ALTER TABLE prop_table REMOVE TTL;
|
|
|
|
SHOW CREATE TABLE prop_table;
|
|
|
|
ALTER TABLE prop_table MODIFY COLUMN column_ttl REMOVE TTL;
|
|
|
|
SHOW CREATE TABLE prop_table;
|
|
|
|
SYSTEM START TTL MERGES prop_table;
|
|
|
|
OPTIMIZE TABLE prop_table FINAL;
|
|
|
|
SELECT COUNT() FROM prop_table;
|
|
|
|
DROP TABLE IF EXISTS prop_table;
|