Languages
[Edit]
EN

MS SQL Server - IIF() function example

0 points
Created by:
Dirask JS Member
3610

In this article, we would like to show you IIF() function example in MS SQL Server.

Quick solution:

SELECT IIF(condition, if_true, if_false);

 

Practical examples

Example 1

In this example, we will check two conditions, the first one will return true, and the second one will return false.

Query:

SELECT IIF(1000 > 1, 'condition1_true', 'condition1_false') AS 'condition1_check';
SELECT IIF(1000 < 1, 'condition2_true', 'condition2_false') AS 'condition2_check';

Result:

MS SQL Server - IF() function example - result
MS SQL Server - IF() function example - result

Example 2

To show you how IIF() function works, we will use the following table:

MS SQL Server - example data used to explain IF() function
MS SQL Server - example data used to explain IIF() function

Note:

At the end of this article you can find database preparation SQL queries.

 

In this example, we will display salary column from users table and salary_information which is created with IIF() function.

Query:

SELECT
    [salary],
    IIF([salary] > 6000, 'high_salary', 'average_salary') AS 'salary_information'
FROM [users];

Result:

MS SQL Server - IF() function example - result
MS SQL Server - IIF() function example - result

Database preparation

create_tables.sql file:

CREATE TABLE [users] (
	[id] INT IDENTITY(1,1),
	[name] VARCHAR(50) NOT NULL,
	[surname] VARCHAR(50) NOT NULL,
	[department_id] INT,
    [salary] DECIMAL(15,2) NOT NULL,
	PRIMARY KEY ([id])
);

insert_data.sql file:

INSERT INTO [users]
	( [name], [surname], [department_id], [salary])
VALUES
	('John', 'Stewart', 1, '3512.00'),
	('Chris', 'Brown', 2, '1344.00'),
	('Kate', 'Lewis', 3, '6574.00'),
	('Ailisa', 'Gomez', NULL, '6500.00'),
	('Gwendolyn', 'James', 2, '4200.00'),
	('Simon', 'Collins', 4, '3320.00'),
	('Taylor', 'Martin', 2, '1500.00'),
	('Andrew', 'Thompson', NULL, '2100.00');

MS SQL Server - functions

Native Advertising
🚀
Get your tech brand or product in front of software developers.
For more information Contact us
Dirask - we help you to
solve coding problems.
Ask question.

❤️💻 🙂

Join