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MySQL - count characters in string (CHAR_LENGTH())

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Created by:
illona
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In this article, we would like to show you how to count characters in string using CHAR_LENGTH() function in MySQL.

Quick solution:

SELECT CHAR_LENGTH ('string');

Simple example

In this example, we will count characters in dirask string.

Query:

SELECT CHAR_LENGTH ('dirask');

Result:

MySQL - count characters in string result
MySQL - count characters in string result

Practical example

To show how to count distinct values, we will use the following table:

MySQL - example data used to count characters in string
MySQL - example data used to count characters in string

Note:

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

Example

In this example, we will count the number of characters in name column from users table.

Query:

SELECT
    `id`, `name`,
    CHAR_LENGTH (`name`) AS 'characters_in_name'
FROM `users`;

Output:

MySQL - count characters in string - result
MySQL - count characters in string - 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,
	PRIMARY KEY (`id`)
);

insert_data.sql file:

INSERT INTO `users`
	( `name`, `surname`)
VALUES
	('John', 'Stewart'),
	('Chris', 'Brown'),
	('Kate', 'Lewis'),
	('Ailisa', 'Gomez'),
	('Gwendolyn', 'James'),
	('Simon', 'Collins'),
	('Taylor', 'Martin'),
	('Andrew', 'Thompson');

MySQL - Problems

MySQL - count characters in string (CHAR_LENGTH())
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