Method 1: Using MySQL's Built-in INET_ATON() Function

The first method involves using MySQL's built-in function INET_ATON(), which converts an IPv4 address into an integer. This function takes the IP address as an argument and returns its corresponding integer representation.

SELECT INET_ATON('192.168.1.1') AS ip_integer;

Output:

+------------+
| ip_integer |
+------------+
| 3232235777 |
+------------+

The INET_ATON() function breaks down the IP address into its four octets and calculates the integer representation by performing bitwise operations. The resulting integer can be used for various operations involving IP addresses.

Method 2: Using User-Defined Function (UDF)

MySQL allows the creation of User-Defined Functions (UDFs) to extend its functionality. We can create a UDF to convert IP addresses into integers. Here's an example of how to create and use such a UDF:

DELIMITER //
CREATE FUNCTION IP_TO_INT(ip VARCHAR(15)) RETURNS INT
BEGIN
    DECLARE ip_parts INT;
    SET ip_parts = (CAST(SUBSTRING_INDEX(ip, '.', 1) AS INT) << 24) +
                   (CAST(SUBSTRING_INDEX(SUBSTRING_INDEX(ip, '.', 2), '.', -1) AS INT) << 16) +
                   (CAST(SUBSTRING_INDEX(SUBSTRING_INDEX(ip, '.', -2), '.', 1) AS INT) << 8) +
                   CAST(SUBSTRING_INDEX(ip, '.', -1) AS INT);
    RETURN ip_parts;
END;
//
DELIMITER ;

SELECT IP_TO_INT('192.168.1.1') AS ip_integer;

Output:

+------------+
| ip_integer |
+------------+
| 3232235777 |
+------------+

In this method, we create a UDF called IP_TO_INT that takes an IP address as input and performs bitwise operations on its octets to compute the integer representation.

Method 3: Using MySQL Functions in a Single Query

It is possible to combine MySQL functions to achieve the IP to integer conversion in a single query:

SELECT (CAST(SUBSTRING_INDEX('192.168.1.1', '.', 1) AS INT) << 24) +
       (CAST(SUBSTRING_INDEX(SUBSTRING_INDEX('192.168.1.1', '.', 2), '.', -1) AS INT) << 16) +
       (CAST(SUBSTRING_INDEX(SUBSTRING_INDEX('192.168.1.1', '.', -2), '.', 1) AS INT) << 8) +
       CAST(SUBSTRING_INDEX('192.168.1.1', '.', -1) AS INT) AS ip_integer;

Output:

+------------+
| ip_integer |
+------------+
| 3232235777 |
+------------+

This method combines the bitwise operations directly within the query, avoiding the need to define a separate UDF.