Use the IS NULL and IS NOT NULL operators : Null « Data Type « SQL / MySQL

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SQL / MySQL » Data Type » Null

Use the IS NULL and IS NOT NULL operators




/*

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)





*/  

SELECT 1 IS NULL, 1 IS NOT NULL;

Related examples in the same category

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3.	Working with NULL Values
4.	NULL means 'not having a value'
5.	Disallowing NULLs
6.	Retrieve NOT NULL value
7.	List NOT NULL value and order it
8.	Select NOT NULL value
9.	IS NOT NULL in where clause
10.	NULL value in where clause
11.	Read NULL value
12.	Dealing With NULL Data

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