SQL Server ISNULL() Function
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SQL Server ISNULL() Function
❮ SQL Server Functions
Example
Return the specified value IF the expression is NULL, otherwise return the
expression:
SELECT ISNULL(NULL, 'W3Schools.com');Try it Yourself »
Definition and Usage
The ISNULL() function returns a specified value if the expression is NULL.
If the expression is NOT NULL, this function returns the expression.
Syntax
ISNULL(expression, value)Parameter Values
| Parameter | Description |
|---|---|
| expression | Required. The expression to test whether is NULL |
| value | Required. The value to return if expression is NULL |
Technical Details
| Works in: | SQL Server (starting with 2008), Azure SQL Database, Azure SQL Data Warehouse, Parallel Data Warehouse |
|---|
More Examples
Example
Return the specified value IF the expression is NULL, otherwise return the
expression:
SELECT ISNULL('Hello', 'W3Schools.com');Try it Yourself »
Example
Return the specified value IF the expression is NULL, otherwise return the
expression:
SELECT ISNULL(NULL, 500);Try it Yourself »
❮ SQL Server Functions
