Install MySql 5.6 on Ubuntu 16.04

apt-get install software-properties-common

sudo add-apt-repository 'deb http://archive.ubuntu.com/ubuntu trusty universe'
sudo apt-get update
sudo apt install mysql-server-5.6
sudo apt install mysql-client-5.6

Errors were encountered while processing:

sudo -s
cd /var/cache/debconf
rm *.dat
apt-get update && apt-get upgrade