MySQL COALESCE() Function
Example
Return the first non-null value 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 value in a list.
Syntax
COALESCE(val1,
val2, ...., val_n)
Parameter Values
| Parameter | Description |
|---|---|
| val1, val2, val_n | Required. The values to test |
Technical Details
| Works in: | From MySQL 4.0 |
|---|
More Examples
Example
Return the first non-null value in a list:
SELECT
COALESCE(NULL, 1, 2, 'W3Schools.com');
Try it Yourself »
