Aborting downgrade from (at least) 10.0 to 5.6.
If are sure you want to downgrade to 5.6, remove the file
/var/lib/mysql/debian-*.flag and try installing again.
dpkg: error processing archive /var/cache/apt/archives/mysql-server-5.6_5.6.19-0ubuntu0.14.04.1_amd64.deb (--unpack):
subprocess new pre-installation script returned error exit status 1
From log:
Aborting downgrade from (at least) 10.0 to 5.6. mysql/debian- *.flag and try installing again. apt/archives/ mysql-server- 5.6_5.6. 19-0ubuntu0. 14.04.1_ amd64.deb (--unpack):
If are sure you want to downgrade to 5.6, remove the file
/var/lib/
dpkg: error processing archive /var/cache/
subprocess new pre-installation script returned error exit status 1