Yes, it includes mysql. The purpose of trying this was to make a completely portable EqEmu Server. Nothing has to be installed on the target pc. You can build this server write it to a dvd and give it to your friends. They only need to change a few config settings and it works.
Since we are using XAMPP, we get everything that XAMPP contains.
http://www.apachefriends.org/en/xampp.html is a link to the XAMPP site, but it contains the following:
Apache, MySQL, PHP + PEAR, Perl, mod_php, mod_perl, mod_ssl, OpenSSL, phpMyAdmin, Webalizer, Mercury Mail Transport System for Win32 and NetWare Systems v3.32, Ming, JpGraph, FileZilla FTP Server, mcrypt, eAccelerator, SQLite, and WEB-DAV + mod_auth_mysql.
We are only using Apache, PHP, Perl, and MySQL to build the Portable Emulator. We could get by with just using perl and MySql, but having apache and php gives us some portable config tools.
Also we are using version 1.6.6a because we need perl 5.8.