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IS NOT NULL

Sintassi

IS NOT NULL

Spiegazione

Verifica se un valore è diverso da NULL.

Esempi

MariaDB [(none)]> SELECT 1 IS NOT NULL, 0 IS NOT NULL, NULL IS NOT NULL;
+---------------+---------------+------------------+
| 1 IS NOT NULL | 0 IS NOT NULL | NULL IS NOT NULL |
+---------------+---------------+------------------+
|             1 |             1 |                0 |
+---------------+---------------+------------------+
1 row in set (0.00 sec)

MariaDB [(none)]>

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