MySQL Char_Length function is one of the String methods, which returns the length of the user-specified string measured in characters. It considers the multi-byte character as a single char. And this is the significant difference between Char_Length and Length function.
The MySQL Character_length is the synonym for the standard Character Length method. So, you can use any of these method 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 Character_Length Function using Command Prompt and Workbench, we are going to use the below-shown data
MySQL Char_Length Example
The char length function counts the number of single characters inside a specified expression. The following query shows you multiple ways to use this character length.
SELECT CHAR_LENGTH ('MySQL') AS `Char Length`; SELECT CHAR_LENGTH ('Learn MySQL Tutorials') AS `MySQLLength`; SELECT CHAR_LENGTH ('Tutorial Gateway') AS `Website Length`;
Remember, the Char_Length function counts the empty space as well.
This also allows you to find the character length of the data inside a column. In this example, we are going to find the char count of two columns: the Department Name and Email column.
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 String method example, we show you how to use the Character length method at the MySQL where condition. Here, we used the char_length function in the where clause to check whether the character Length of a department column data is greater than 7 or not.
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`;