Use the IS NULL and IS NOT NULL operators for NULL value : NULL : Data Types MySQL TUTORIALS

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Use the IS NULL and IS NOT NULL operators for NULL value


mysql>
mysql> SELECT 1 IS NULL, 1 IS NOT NULL;
+-----------+---------------+
| 1 IS NULL | 1 IS NOT NULL |
+-----------+---------------+
|         0 |             1 |
+-----------+---------------+
1 row in set (0.00 sec)

mysql>



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