mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-21 15:12:02 +00:00
14 lines
524 B
MySQL
14 lines
524 B
MySQL
|
DROP TABLE IF EXISTS nullable_key;
|
||
|
|
CREATE TABLE nullable_key (k Nullable(int), v int) ENGINE MergeTree ORDER BY k SETTINGS allow_nullable_key = 1;
|
||
|
|
|
||
|
|
INSERT INTO nullable_key SELECT number * 2, number * 3 FROM numbers(10);
|
||
|
|
INSERT INTO nullable_key SELECT NULL, -number FROM numbers(3);
|
||
|
|
|
||
|
|
SELECT * FROM nullable_key ORDER BY k;
|
||
|
|
SELECT * FROM nullable_key WHERE k IS NULL;
|
||
|
|
SELECT * FROM nullable_key WHERE k IS NOT NULL;
|
||
|
|
SELECT * FROM nullable_key WHERE k > 10;
|
||
|
|
SELECT * FROM nullable_key WHERE k < 10;
|
||
|
|
|
||
|
|
DROP TABLE nullable_key;
|