Example
Compare two expressions:
SELECT NULLIF(25, 25);
Definition and Usage
The NULLIF() function returns NULL if two expressions are equal, otherwise it returns the first expression.
Syntax
NULLIF(expr1, expr2)
Parameter Values
| Parameter | Description |
|---|---|
| expr1, expr2 | Required. The two expressions to be compared |
Technical Details
| Works in: | SQL Server (starting with 2008), Azure SQL Database, Azure SQL Data Warehouse, Parallel Data Warehouse |
|---|
More Examples
Example
Compare two expressions:
SELECT NULLIF('Hello', 'Hello');
Example
Compare two expressions:
SELECT NULLIF('Hello', 'world');
Example
Compare two expressions:
SELECT NULLIF('2017-08-25', '2017-08-25');