Debian provides MySQL server 5.5 with both wheezy and jessie but the latest GA (Generally Available) releases are 5.6 and 5.7 with some enhancements and added features, including support for InnoDB Full-text search.

Here’s how to install MySQL server 5.6 or 5.7 on Debian based Linux distros (including wheezy, jessie and Ubuntu):

1. Download the MySQL APT repository config tool (you can see more details here: http://dev.mysql.com/downloads/repo/apt/)

2. Install the MySQL APT repository config tool

You will be asked to select product and version that you want to install. In the first step, select Server and next select either mysql-5.6 or mysql-5.7. Then click Apply.

3. Update APT

如果出现 ：
W: GPG error: http://repo.mysql.com jessie InRelease: The following signatures were invalid: KEYEXPIRED 1487236823 KEYEXPIRED 1487236823 KEYEXPIRED 1487236823

KEY 过期了执行下面的命令

原文 ： http://techglimpse.com/update-gpg-key-mysql-repo-debian-ubuntu/

4. Install the server

That’s all!