Quick Reference
The SQL Server ISNULL() function returns a specified value if the expression is NULL, and the expression itself if the expression is NOT NULL.
SELECT ISNULL(NULL, 'chicken');Output
chickenSyntax
ISNULL(expression, value)Parameters
| Parameter | Description |
|---|---|
| expression | The expression to test whether is NULL (required) |
| value | The value to return if the expression is NULL (required) |
SQL Notes:
- Any work being done to modify the structure of a database or delete tables or the the database itself should only be done after making a recent backup
We’d like to acknowledge that we learned a great deal of our coding from W3Schools and TutorialsPoint, borrowing heavily from their teaching process and excellent code examples. We highly recommend both sites to deepen your experience, and further your coding journey. We’re just hitting the basics here at 1SMARTchicken.