mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-21 07:01:59 +00:00
21 lines
592 B
SQL
21 lines
592 B
SQL
DROP TABLE IF EXISTS check_comments;
|
|
|
|
CREATE TABLE check_comments
|
|
(
|
|
column_name1 UInt8 DEFAULT 1 COMMENT 'comment',
|
|
column_name2 UInt8 COMMENT 'non default comment'
|
|
) ENGINE = ReplicatedMergeTree('/clickhouse/tables/{database}/test_00753/comments', 'r1')
|
|
ORDER BY column_name1;
|
|
|
|
SHOW CREATE check_comments;
|
|
DESC check_comments;
|
|
|
|
ALTER TABLE check_comments COMMENT COLUMN column_name1 'another comment';
|
|
|
|
SHOW CREATE check_comments;
|
|
DESC check_comments;
|
|
|
|
SELECT * FROM system.columns WHERE table = 'check.comments' and database = currentDatabase();
|
|
|
|
DROP TABLE check_comments;
|