If your web hosting provider support PostgreSql,you can easy converter database from Mysql to PostgreSql use SweetRice,many people likes Mysql ,me too,but in same time,mysql's user more then postgresql's user on web server,so connect to mysql server slower then connect to postgresql.
Now SweetRice allow you ease converter your database to postgresql from mysql,you can test which one fastest and use it.
Download and enjoy SweetRice now
If you find any bug of SweetRice,please submit it here,thanks.