Mysql Upper Function

MySQL: UPPER Function

This tutorial explains how to use the MySQL UPPER function with syntax and examples.


The MySQL UPPER function converts all characters in the specified string to uppercase. If there are characters in the string that are not letters, they are unaffected by this function.


The syntax for the UPPER function in MySQL is:

UPPER( string )

Parameters or Arguments


The string to convert to uppercase.


  • The UPPER function will convert the characters using the current character mapping set, which is latin1, by default.
  • The UCASE function is a synonym for the UPPER function.

Applies To

The UPPER function can be used in the following versions of MySQL:

  • MySQL 5.7, MySQL 5.6, MySQL 5.5, MySQL 5.1, MySQL 5.0, MySQL 4.1, MySQL 4.0, MySQL 3.23


Let's look at some MySQL UPPER function examples and explore how to use the UPPER function in MySQL.

For example:

mysql> SELECT UPPER('');
Output: 'AODBA.COM'