This software documentation is (C)2009-2013 Percona LLC and/or its affiliates and is distributed under the Creative Commons Attribution-ShareAlike 2.0 Generic license.
Percona Server is built upon MySQL from Oracle. Along with making our own modifications, we merge in changes from other sources such as community contributions and changes from MariaDB.
The original SHOW USER/TABLE/INDEX statistics code came from Google.
Percona does not require copyright assignment.
See the COPYING files accompanying the software distribution.