The Ultimate Guide to High Availability with MariaDB

ISNULL

Sintassi

ISNULL(espr)

Description:

Se espr è NULL, ISNULL() restituisce 1, altrimenti restituisce 0.

Esempi

MariaDB [(none)]> SELECT ISNULL(1+1);
+-------------+
| ISNULL(1+1) |
+-------------+
|           0 |
+-------------+
1 row in set (0.00 sec)

MariaDB [(none)]> SELECT ISNULL(1/0);
+-------------+
| ISNULL(1/0) |
+-------------+
|           1 |
+-------------+
1 row in set (0.00 sec)

MariaDB [(none)]>

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