mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-10-19 15:01:03 +00:00
13 lines
423 B
SQL
13 lines
423 B
SQL
DROP TABLE IF EXISTS alter;
|
|
CREATE TABLE alter (`boolean_false` Nullable(String)) ENGINE = MergeTree ORDER BY tuple();
|
|
|
|
INSERT INTO alter (`boolean_false`) VALUES (NULL), (''), ('123');
|
|
SELECT * FROM alter;
|
|
SELECT * FROM alter ORDER BY boolean_false NULLS LAST;
|
|
|
|
ALTER TABLE alter MODIFY COLUMN `boolean_false` Nullable(UInt8);
|
|
SELECT * FROM alter;
|
|
SELECT * FROM alter ORDER BY boolean_false NULLS LAST;
|
|
|
|
DROP TABLE alter;
|