Flash cards
Review the key moves
1/4
Core idea
What is the main idea behind SQL Server NULLIF() Function?
Lesson checks
Practice each idea before moving on
Short Mimo-style checks built from this lesson's code, terms, and sequence.
1Quick choice
Which statement best captures the main point of this lesson?
2Fill blank
Complete the missing token from the example code.
___ NULLIF(25, 25);3Order
Put the learning moves in the order that makes the concept easiest to apply.
The NULLIF() function returns NULL if two expressions are equal, otherwise it returns the first expression.
Definition and Usage
SQL Server NULLIF() Function
Example
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 |
|---|