IS NOT
Sintassi
IS NOT valore_booleano
Spiegazione
Confronta un valore con un valore booleano, dove valore_booleano può essere TRUE, FALSE o UNKNOWN.
Esempi
MariaDB [(none)]> SELECT 1 IS NOT UNKNOWN, 0 IS NOT UNKNOWN, NULL IS NOT UNKNOWN; +------------------+------------------+---------------------+ | 1 IS NOT UNKNOWN | 0 IS NOT UNKNOWN | NULL IS NOT UNKNOWN | +------------------+------------------+---------------------+ | 1 | 1 | 0 | +------------------+------------------+---------------------+ 1 row in set (0.00 sec) MariaDB [(none)]>
Content reproduced on this site is the property of its respective owners,
and this content is not reviewed in advance by MariaDB. The views, information and opinions
expressed by this content do not necessarily represent those of MariaDB or any other party.
