mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-06 07:32:27 +00:00
91 lines
3.1 KiB
SQL
91 lines
3.1 KiB
SQL
DROP TABLE IF EXISTS check_query_comment_column;
|
|
|
|
-- Check COMMENT COLUMN and MODIFY COLUMN statements with simple engine
|
|
CREATE TABLE check_query_comment_column
|
|
(
|
|
first_column UInt8 DEFAULT 1 COMMENT 'comment 1',
|
|
second_column UInt8 MATERIALIZED first_column COMMENT 'comment 2',
|
|
third_column UInt8 ALIAS second_column COMMENT 'comment 3',
|
|
fourth_column UInt8 COMMENT 'comment 4',
|
|
fifth_column UInt8
|
|
) ENGINE = TinyLog;
|
|
|
|
SHOW CREATE TABLE check_query_comment_column;
|
|
DESCRIBE TABLE check_query_comment_column;
|
|
|
|
SELECT table, name, comment
|
|
FROM system.columns
|
|
WHERE table = 'check_query_comment_column' AND database = currentDatabase()
|
|
FORMAT PrettyCompactNoEscapes;
|
|
|
|
ALTER TABLE check_query_comment_column
|
|
COMMENT COLUMN first_column 'comment 1_1',
|
|
COMMENT COLUMN second_column 'comment 2_1',
|
|
COMMENT COLUMN third_column 'comment 3_1',
|
|
COMMENT COLUMN fourth_column 'comment 4_1',
|
|
COMMENT COLUMN fifth_column 'comment 5_1';
|
|
|
|
SHOW CREATE TABLE check_query_comment_column;
|
|
|
|
ALTER TABLE check_query_comment_column
|
|
MODIFY COLUMN first_column COMMENT 'comment 1_2',
|
|
MODIFY COLUMN second_column COMMENT 'comment 2_2',
|
|
MODIFY COLUMN third_column COMMENT 'comment 3_2',
|
|
MODIFY COLUMN fourth_column COMMENT 'comment 4_2',
|
|
MODIFY COLUMN fifth_column COMMENT 'comment 5_2';
|
|
|
|
SELECT table, name, comment
|
|
FROM system.columns
|
|
WHERE table = 'check_query_comment_column' AND database = currentDatabase()
|
|
FORMAT PrettyCompactNoEscapes;
|
|
|
|
SHOW CREATE TABLE check_query_comment_column;
|
|
DROP TABLE IF EXISTS check_query_comment_column;
|
|
|
|
-- Check `ALTER TABLE table_name COMMENT COLUMN 'comment'` statement with MergeTree engine
|
|
CREATE TABLE check_query_comment_column
|
|
(
|
|
first_column UInt8 COMMENT 'comment 1',
|
|
second_column UInt8 COMMENT 'comment 2',
|
|
third_column UInt8 COMMENT 'comment 3'
|
|
) ENGINE = MergeTree()
|
|
ORDER BY first_column
|
|
PARTITION BY second_column
|
|
SAMPLE BY first_column;
|
|
|
|
SHOW CREATE TABLE check_query_comment_column;
|
|
DESCRIBE TABLE check_query_comment_column;
|
|
|
|
SELECT table, name, comment
|
|
FROM system.columns
|
|
WHERE table = 'check_query_comment_column' AND database = currentDatabase()
|
|
FORMAT PrettyCompactNoEscapes;
|
|
|
|
ALTER TABLE check_query_comment_column
|
|
COMMENT COLUMN first_column 'comment 1_2',
|
|
COMMENT COLUMN second_column 'comment 2_2',
|
|
COMMENT COLUMN third_column 'comment 3_2';
|
|
|
|
SHOW CREATE TABLE check_query_comment_column;
|
|
|
|
ALTER TABLE check_query_comment_column
|
|
MODIFY COLUMN first_column COMMENT 'comment 1_3',
|
|
MODIFY COLUMN second_column COMMENT 'comment 2_3',
|
|
MODIFY COLUMN third_column COMMENT 'comment 3_3';
|
|
|
|
SHOW CREATE TABLE check_query_comment_column;
|
|
|
|
ALTER TABLE check_query_comment_column
|
|
MODIFY COLUMN first_column DEFAULT 1 COMMENT 'comment 1_3',
|
|
MODIFY COLUMN second_column COMMENT 'comment 2_3', -- We can't change default value of partition key.
|
|
MODIFY COLUMN third_column DEFAULT 1 COMMENT 'comment 3_3';
|
|
|
|
SELECT table, name, comment
|
|
FROM system.columns
|
|
WHERE table = 'check_query_comment_column' and database = currentDatabase()
|
|
FORMAT PrettyCompactNoEscapes;
|
|
|
|
DROP TABLE IF EXISTS check_query_comment_column;
|
|
|
|
-- TODO: add here tests with ReplicatedMergeTree
|