mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-27 10:02:01 +00:00
6 lines
307 B
MySQL
6 lines
307 B
MySQL
|
DROP TABLE IF EXISTS test.nulls;
|
||
|
|
CREATE TABLE test.nulls (d Date, x Nullable(UInt64)) ENGINE = MergeTree(d, d, 8192);
|
||
|
|
INSERT INTO test.nulls SELECT toDate('2000-01-01'), number % 10 != 0 ? number : NULL FROM system.numbers LIMIT 10000;
|
||
|
|
SELECT count() FROM test.nulls WHERE x IS NULL;
|
||
|
|
DROP TABLE test.nulls;
|