MySQL · December 20, 2023

MySQL Command: ASCII()

MySQL Command: ASCII()

In the world of databases, MySQL is one of the most popular choices for managing and organizing data. It offers a wide range of functions and commands that allow users to manipulate and retrieve data efficiently. One such command is ASCII(), which is used to obtain the ASCII value of a specific character or string.

Understanding ASCII

ASCII stands for American Standard Code for Information Interchange. It is a character encoding standard that assigns unique numeric values to different characters. The ASCII table consists of 128 characters, including uppercase and lowercase letters, numbers, punctuation marks, and control characters.

Each character in the ASCII table is assigned a decimal value ranging from 0 to 127. For example, the ASCII value of the letter 'A' is 65, while the ASCII value of the number '1' is 49.

Using the ASCII() Function

The ASCII() function in MySQL allows you to retrieve the ASCII value of a specific character or the first character of a string. The syntax for using the ASCII() function is as follows:

ASCII(character)

Here, 'character' represents the character or string for which you want to obtain the ASCII value. The function returns an integer representing the ASCII value.

Let's look at a few examples to understand how the ASCII() function works:

Example 1:

SELECT ASCII('A');

This query will return the ASCII value of the character 'A', which is 65.

Example 2:

SELECT ASCII('Hello');

In this example, the ASCII() function will return the ASCII value of the first character of the string 'Hello', which is 'H'. The result will be 72.

Example 3:

SELECT ASCII('123');

Here, the ASCII() function will return the ASCII value of the first character of the string '123', which is '1'. The result will be 49.

Conclusion

The ASCII() function in MySQL is a useful tool for obtaining the ASCII value of a character or string. It can be handy in various scenarios, such as data manipulation, sorting, or filtering. By understanding the ASCII values of different characters, you can perform more advanced operations on your MySQL database.

For more information on MySQL and its functions, consider exploring Server.HK, a leading VPS hosting company that offers reliable and efficient hosting solutions.

You may also like...