SELECT ISNULL(NULL), ISNULL(0), ISNULL(1); : IFNULL « Function « SQL / MySQL

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SQL / MySQL » Function » IFNULL

SELECT ISNULL(NULL), ISNULL(0), ISNULL(1);

      

mysql>

mysql>

mysql> SELECT ISNULL(NULL), ISNULL(0), ISNULL(1);

+--------------+-----------+-----------+

| ISNULL(NULL) | ISNULL(0) | ISNULL(1) |

+--------------+-----------+-----------+

|            1 |         0 |         0 |

+--------------+-----------+-----------+

1 row in set (0.00 sec)

Related examples in the same category

1.	The IFNULL() function returns a value based on whether a specified expression evaluates to NULL.
2.	IFNULL() tests its first argument and returns it if it's not NULL, or returns its second argument otherwise
3.	IF( ) and IFNULL( ) are useful for catching divide-by-zero operations
4.	Use IFNULL( ) to map their results appropriately:
5.	IFNULL() takes two arguments. If the first argument is not NULL, that argument is returned; otherwise, the fun
6.	The following expression returns expr2 if expr1 is NULL, and expr1 otherwise:

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