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MySQL - count characters in string (CHAR_LENGTH())
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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:
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SELECT CHAR_LENGTH ('string');In this example, we will count characters in dirask string.
Query:
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SELECT CHAR_LENGTH ('dirask');Result:
To show how to count distinct values, we will use the following table:
Note:
At the end of this article you can find database preparation SQL queries.
In this example, we will count the number of characters in name column from users table.
Query:
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SELECT2
`id`, `name`,3
CHAR_LENGTH (`name`) AS 'characters_in_name'4
FROM `users`;Output:
create_tables.sql file:
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CREATE TABLE `users` (2
`id` INT(10) UNSIGNED NOT NULL AUTO_INCREMENT,3
`name` VARCHAR(50) NOT NULL,4
`surname` VARCHAR(50) NOT NULL,5
PRIMARY KEY (`id`)6
);7
insert_data.sql file:
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INSERT INTO `users`2
( `name`, `surname`)3
VALUES4
('John', 'Stewart'),5
('Chris', 'Brown'),6
('Kate', 'Lewis'),7
('Ailisa', 'Gomez'),8
('Gwendolyn', 'James'),9
('Simon', 'Collins'),10
('Taylor', 'Martin'),11
('Andrew', 'Thompson');