mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-21 15:12:02 +00:00
29 lines
1.0 KiB
MySQL
29 lines
1.0 KiB
MySQL
|
DROP TABLE IF EXISTS test_alter;
|
||
|
|
CREATE TABLE test_alter (x Date, s String) ENGINE = MergeTree ORDER BY s PARTITION BY x;
|
||
|
|
ALTER TABLE test_alter MODIFY COLUMN s DEFAULT 'Hello';
|
||
|
|
ALTER TABLE test_alter MODIFY COLUMN x DEFAULT '2000-01-01';
|
||
|
|
DESCRIBE TABLE test_alter;
|
||
|
|
DROP TABLE test_alter;
|
||
|
|
|
||
|
|
DROP TABLE IF EXISTS test_alter_r1;
|
||
|
|
DROP TABLE IF EXISTS test_alter_r2;
|
||
|
|
|
||
|
|
CREATE TABLE test_alter_r1 (x Date, s String) ENGINE = ReplicatedMergeTree('/clickhouse/tables/test/alter', 'r1') ORDER BY s PARTITION BY x;
|
||
|
|
CREATE TABLE test_alter_r2 (x Date, s String) ENGINE = ReplicatedMergeTree('/clickhouse/tables/test/alter', 'r2') ORDER BY s PARTITION BY x;
|
||
|
|
|
||
|
|
ALTER TABLE test_alter_r1 MODIFY COLUMN s DEFAULT 'Hello';
|
||
|
|
ALTER TABLE test_alter_r2 MODIFY COLUMN x DEFAULT '2000-01-01';
|
||
|
|
|
||
|
|
SYSTEM SYNC REPLICA test_alter_r1;
|
||
|
|
SYSTEM SYNC REPLICA test_alter_r2;
|
||
|
|
|
||
|
|
DESCRIBE TABLE test_alter_r1;
|
||
|
|
DESCRIBE TABLE test_alter_r2;
|
||
|
|
|
||
|
|
SYSTEM RESTART REPLICAS;
|
||
|
|
DESCRIBE TABLE test_alter_r1;
|
||
|
|
DESCRIBE TABLE test_alter_r2;
|
||
|
|
|
||
|
|
DROP TABLE test_alter_r1;
|
||
|
|
DROP TABLE test_alter_r2;
|