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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