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(Reading database ... 164518 files and directories currently installed.)
Preparing to unpack .../mysql-server-core-5.6_5.6.27-0ubuntu0.14.04.1_amd64.deb ...
Unpacking mysql-server-core-5.6 (5.6.27-0ubuntu0.14.04.1) over (5.6.24-2+deb.sury.org~trusty+2) ...
dpkg: error processing archive /var/cache/apt/archives/mysql-server-core-5.6_5.6.27-0ubuntu0.14.04.1_amd64.deb (--unpack):
 trying to overwrite '/usr/share/mysql/innodb_memcached_config.sql', which is also in package mysql-server-5.6 5.6.24-2+deb.sury.org~trusty+2
dpkg-deb: error: subprocess paste was killed by signal (Broken pipe)
Errors were encountered while processing:
 /var/cache/apt/archives/mysql-server-core-5.6_5.6.27-0ubuntu0.14.04.1_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)