EN
MySQL - SELECT DISTINCT statement
0
points
In this article, we would like to show you how to use SELECT DISTINCT
statement in MySQL.
Quick solution:
SELECT DISTINCT `column1`, `column2`, `columnN`
FROM `table_name`;
Practical example
To show how the SELECT DISTINCT
statement works, we will use the following table:
Note:
At the end of this article you can find database preparation SQL queries.
Example
In this example, we will display unique countries from the users
table.
Query:
SELECT DISTINCT `country`
FROM `users`;
Output:
Database preparation
create_tables.sql
file:
CREATE TABLE `users` (
`id` INT(10) UNSIGNED NOT NULL AUTO_INCREMENT,
`name` VARCHAR(100) NOT NULL,
`country` VARCHAR(15) NOT NULL,
PRIMARY KEY (`id`)
)
ENGINE=InnoDB;
insert_data.sql
file:
INSERT INTO `users`
(`name`, `country`)
VALUES
('Tom', 'Poland'),
('Chris', 'Belgium'),
('Jack', 'Belgium'),
('Kate', 'Algeria'),
('Denis', 'Germany'),
('Matt', 'Germany');