IS NULL : IS NULL ISNULL : Comparison Functions Operators MySQL TUTORIALS

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IS NULL


mysql>
Tests whether a value is NULL.
mysql>
mysql> SELECT 1 IS NULL, 0 IS NULL, NULL IS NULL;
+-----------+-----------+--------------+
| 1 IS NULL | 0 IS NULL | NULL IS NULL |
+-----------+-----------+--------------+
|         0 |         0 |            1 |
+-----------+-----------+--------------+
1 row in set (0.00 sec)

mysql>



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