MySQL Char_Length function one of the String Function, which returns the length of the user-specified string measured in characters. This function considers the multi-byte character as a single character. And this is the significant difference between Char_Length and Length function.
In MySQL, Character_length is the synonyms for the standard Char_Length function. So, you can use any of these function names
MySQL Char_Length Syntax
The basic syntax of Character_Length in MySQL is as shown below:
SELECT LENGTH (String_Expression) FROM Source
To write this MySQL Character_Length Function using Command Prompt and Workbench, we are going to use the below shown data
MySQL Char_Length Example 1
The char length function is to count the number of single characters inside a specified expression. The following query shows you multiple ways to use this character length function.
-- MySQL Character Length Example SELECT CHAR_LENGTH ('MySQL') AS `Char Length`; SELECT CHAR_LENGTH ('Learn MySQL Tutorials') AS `MySQL Length`; SELECT CHAR_LENGTH ('Tutorial Gateway') AS `Website Length`;
Remember, the Char_Length function counts the empty space as well.
MySQL Char_Length Example 2
The char_length function also allows you to find the character length of the data inside a column. In this example, we are going to find the character length of two columns: Department Name and Email column.
-- MySQL Character_Length Example USE mysqltutorial; SELECT FirstName, LastName, DepartmentName, CHAR_LENGTH(DepartmentName) AS `Char Length of Dept`, Email, CHARACTER_LENGTH(Email) AS `Char Length of Email` FROM employe;
MySQL Char_Length Function WHERE Condition
In this example, we show you how to use Character length function at where condition. Here, we used the MySQL char_length function in where clause to check whether the character length of a department column data is greater than 7 or not.
-- MySQL Character_Length Example USE mysqltutorial; SELECT FirstName, LastName, DepartmentName, CHAR_LENGTH(DepartmentName) AS `Char Length of Dept`, Email, CHARACTER_LENGTH(Email) AS `Char Length of Email` FROM employe WHERE CHAR_LENGTH(DepartmentName) > 7 ORDER BY `Char Length of Dept`;