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MySQL BIT_LENGTH Function

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MySQL BIT_LENGTH is one of the String Function, which is used to return the length of a specified string in bits. In this article we will show you, How to use this string BIT_LENGTH in MySQL with example.

MySQL BIT_LENGTH Syntax

The basic syntax of the BIT_LENGTH Function in MySQL is as shown below:

SELECT BIT_LENGTH (Character_Expression)
FROM [Source]

In order to demonstrate this BIT_LENGTH string function, We are going to use the customer details table data that we shown below

MySQL String BIT_LENGTH Function Example

MySQL BIT_LENGTH Example 1

The BIT_LENGTH Function in MySQL is used to return the Bit length of a given character expression. The following query will show multiple ways to use this function.

SELECT BIT_LENGTH('A');

SELECT BIT_LENGTH('Tutorial Gateway');

-- It will return NULL as output
SELECT BIT_LENGTH(NULL);

SELECT BIT_LENGTH(12);

OUTPUT

MySQL BIT_LENGTH Function Example 1

MySQL BIT_LENGTH Example 2

In this example, we are going to implement the string BIT_LENGTH function on different columns in a table. Following statement will return the Bit length of the data present in First_Name, Last_Name, and Education Columns.

-- MySQL String BIT_LENGTH Example
USE company;
SELECT  First_Name, 
		BIT_LENGTH(First_Name) AS FName_Length,
		Last_Name,
        BIT_LENGTH(Last_Name) AS LName_Length,
        Education, 
        BIT_LENGTH(Education) AS Edu_Length,
        Profession, 
        Yearly_Income,     
        Sales
FROM customerdetails;

OUTPUT

MySQL BIT_LENGTH Function Example 2

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