mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-18 13:42:02 +00:00
39 lines
1.3 KiB
SQL
39 lines
1.3 KiB
SQL
DROP TABLE IF EXISTS table_for_rename;
|
|
|
|
CREATE TABLE table_for_rename
|
|
(
|
|
date Date,
|
|
key UInt64,
|
|
value1 String,
|
|
value2 String,
|
|
value3 String
|
|
)
|
|
ENGINE = MergeTree()
|
|
PARTITION BY date
|
|
ORDER BY key;
|
|
|
|
INSERT INTO table_for_rename SELECT toDate('2019-10-01') + number % 3, number, toString(number), toString(number), toString(number) from numbers(9);
|
|
|
|
SELECT value1 FROM table_for_rename WHERE key = 1;
|
|
|
|
ALTER TABLE table_for_rename RENAME COLUMN value1 to renamed_value1;
|
|
|
|
SELECT renamed_value1 FROM table_for_rename WHERE key = 1;
|
|
|
|
SELECT * FROM table_for_rename WHERE key = 1 FORMAT TSVWithNames;
|
|
|
|
ALTER TABLE table_for_rename RENAME COLUMN value3 to value2; --{serverError 15}
|
|
ALTER TABLE table_for_rename RENAME COLUMN value3 TO r1, RENAME COLUMN value3 TO r2; --{serverError 36}
|
|
ALTER TABLE table_for_rename RENAME COLUMN value3 TO r1, RENAME COLUMN r1 TO value1; --{serverError 48}
|
|
|
|
ALTER TABLE table_for_rename RENAME COLUMN value2 TO renamed_value2, RENAME COLUMN value3 TO renamed_value3;
|
|
|
|
SELECT renamed_value2, renamed_value3 FROM table_for_rename WHERE key = 7;
|
|
|
|
SELECT * FROM table_for_rename WHERE key = 7 FORMAT TSVWithNames;
|
|
|
|
ALTER TABLE table_for_rename RENAME COLUMN value100 to renamed_value100; --{serverError 10}
|
|
ALTER TABLE table_for_rename RENAME COLUMN IF EXISTS value100 to renamed_value100;
|
|
|
|
DROP TABLE IF EXISTS table_for_rename;
|