IS

EXAMPLES

SELECT 1 IS TRUE, 1 IS FALSE, 1 IS UNKNOWN;
+-----------+------------+--------------+
| 1 IS TRUE | 1 IS FALSE | 1 IS UNKNOWN |
+-----------+------------+--------------+
|         1 |          0 |            0 |
+-----------+------------+--------------+
SELECT 0 IS TRUE, 0 IS FALSE, 0 IS UNKNOWN;
+-----------+------------+--------------+
| 0 IS TRUE | 0 IS FALSE | 0 IS UNKNOWN |
+-----------+------------+--------------+
|         0 |          1 |            0 |
+-----------+------------+--------------+
SELECT NULL IS TRUE, NULL IS FALSE, NULL IS UNKNOWN;
+--------------+---------------+-----------------+
| NULL IS TRUE | NULL IS FALSE | NULL IS UNKNOWN |
+--------------+---------------+-----------------+
|            0 |             0 |               1 |
+--------------+---------------+-----------------+
SELECT 42 = TRUE, 42 IS TRUE;
+-----------+------------+
| 42 = TRUE | 42 IS TRUE |
+-----------+------------+
|         0 |          1 |
+-----------+------------+

CHANGE HISTORY

Release Series

History

10.6 Enterprise

  • Present starting in MariaDB Enterprise Server 10.6.4-1.

10.6 Community

  • Present starting in MariaDB Community Server 10.6.0.

10.5 Enterprise

  • Present starting in MariaDB Enterprise Server 10.5.3-1.

10.5 Community

  • Present starting in MariaDB Community Server 10.5.0.

10.4 Enterprise

  • Present starting in MariaDB Enterprise Server 10.4.6-1.

10.4 Community

  • Present starting in MariaDB Community Server 10.4.0.

10.3 Enterprise

  • Present starting in MariaDB Enterprise Server 10.3.16-1.

10.3 Community

  • Present starting in MariaDB Community Server 10.3.0.

10.2 Enterprise

  • Present starting in MariaDB Enterprise Server 10.2.25-1.

10.2 Community

  • Present starting in MariaDB Community Server 10.2.0.

EXTERNAL REFERENCES