Use the IS NULL (or IS NOT NULL) comparison instead : Null « Data Type « SQL / MySQL






  1. SQL / MySQL
  2. Data Type
  3. Null

Use the IS NULL (or IS NOT NULL) comparison instead

       
mysql>
mysql> SELECT NULL IS NULL;
+--------------+
| NULL IS NULL |
+--------------+
|            1 |
+--------------+
1 row in set (0.00 sec)

mysql>
mysql> SELECT 4.5 BETWEEN 4 and 5;
+---------------------+
| 4.5 BETWEEN 4 and 5 |
+---------------------+
|                   1 |
+---------------------+
1 row in set (0.00 sec)








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