MySQL COALESCE() Function
Example
Return the first non-null expression in a list:
SELECT
COALESCE(NULL, NULL, NULL, 'W3Schools.com', NULL, 'Example.com');
Try it Yourself »
Definition and Usage
The COALESCE() function returns the first non-null expression in a list.
Syntax
COALESCE(expr1,
expr2, ...., expr_n)Parameter Values
| Parameter | Description |
|---|---|
| expr1, expr2, expr_n | Required. The expressions to test |
Technical Details
| Works in: | MySQL 5.7, MySQL 5.6, MySQL 5.5, MySQL 5.1, MySQL 5.0, MySQL 4.1, MySQL 4.0, MySQL 3.23 |
|---|
More Examples
Example
Return the first non-null expression in a list:
SELECT
COALESCE(NULL, 1, 2, 'W3Schools.com');
Try it Yourself »
