MySQL IFNULL() Function
Example
Return the specified value IF the expression is NULL, otherwise return the expression:
SELECT IFNULL(NULL, "W3Schools.com");
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Definition and Usage
The IFNULL() function returns a specified value if the expression is NULL.
If the expression is NOT NULL, this function returns the expression.
Syntax
IFNULL(expression, alt_value)
Parameter Values
| Parameter | Description |
|---|---|
| expression | Required. The expression to test whether is NULL |
| alt_value | Required. The value to return if expression is NULL |
Technical Details
| Works in: | From MySQL 4.0 |
|---|
More Examples
Example
Return the specified value IF the expression is NULL, otherwise return the expression:
SELECT IFNULL("Hello", "W3Schools.com");
Try it Yourself »
Example
Return the specified value IF the expression is NULL, otherwise return the expression:
SELECT IFNULL(NULL, 500);
Try it Yourself »
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