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MySQL - AND, OR, NOT operators

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Created by:
Abul-Emery
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In this article, we would like to show you how to use AND, OR and NOT operators in MySQL.

To show how the mentioned operators work, we will use the following table:

MySQL - example data used with AND, OR, NOT operators
MySQL - example data used with AND, OR, NOT operators

Note:

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

AND

Syntax:

SELECT `column1`, `column2`, ...
FROM `table_name`
WHERE condition1 AND condition2 AND condition3 ...;

Practical example

In this example, we will display information about users with specified department_id AND salary greater than 1400$.

Query:

SELECT * FROM `users`
WHERE `department_id` = 2 AND `salary` > 1400;

Output:

MySQL - SELECT with AND operator result
MySQL - SELECT with AND operator result

OR

Syntax:

SELECT `column1`, `column2`, ...
FROM `table_name`
WHERE condition1 OR condition2 OR condition3 ...;

Practical example

In this example, we will display information about users whose name is Kate OR Simon.

Query:

SELECT * FROM `users`
WHERE `name` = 'Kate' OR `name` = 'Simon';

Output:

MySQL - SELECT with OR operator result
MySQL - SELECT with OR operator result

NOT

Syntax:

SELECT `column1`, `column2`, ...
FROM `table_name`
WHERE NOT condition;

Practical example

In this example, we will display information about users whose department_id is NOT 2.

Query:

SELECT * FROM `users`
WHERE NOT `department_id` = 2;

Output:

MySQL - SELECT with NOT operator result
MySQL - SELECT with NOT operator result

Database preparation

create_tables.sql file:

CREATE TABLE `users` (
	`id` INT(10) UNSIGNED NOT NULL AUTO_INCREMENT,
	`name` VARCHAR(50) NOT NULL,
	`surname` VARCHAR(50) NOT NULL,
	`department_id` INT(10) UNSIGNED,
    `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');

MySQL

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