SQL•SQL References

MySQL COALESCE() Function

Example

SELECT
COALESCE(NULL, NULL, NULL, 'ExampleSite.com', NULL, 'Example.com');

Definition and Usage

The COALESCE() function returns the first non-null value in a list.

Syntax

COALESCE(
val1
,
 val2
,
....
,
val_n
)

Parameter	Description
val1, val2, val_n	Required. The values to test

Works in:	From MySQL 4.0

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SQL•SQL References

Example

SELECT
COALESCE(NULL, NULL, NULL, 'ExampleSite.com', NULL, 'Example.com');

The COALESCE() function returns the first non-null value in a list.

Syntax

COALESCE(
val1
,
 val2
,
....
,
val_n
)

Parameter	Description
val1, val2, val_n	Required. The values to test

Works in:	From MySQL 4.0