/usr/include/odb/mysql/ is in libodb-mysql-dev 2.4.0-1ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/odb/mysql/auto-handle.hxx
/usr/include/odb/mysql/binding.hxx
/usr/include/odb/mysql/connection-factory.hxx
/usr/include/odb/mysql/connection.hxx
/usr/include/odb/mysql/connection.ixx
/usr/include/odb/mysql/container-statements.hxx
/usr/include/odb/mysql/container-statements.txx
/usr/include/odb/mysql/database.hxx
/usr/include/odb/mysql/database.ixx
/usr/include/odb/mysql/details/
/usr/include/odb/mysql/details/config.h
/usr/include/odb/mysql/details/config.hxx
/usr/include/odb/mysql/details/conversion.hxx
/usr/include/odb/mysql/details/export.hxx
/usr/include/odb/mysql/details/options.hxx
/usr/include/odb/mysql/details/options.ixx
/usr/include/odb/mysql/enum.hxx
/usr/include/odb/mysql/error.hxx
/usr/include/odb/mysql/exceptions.hxx
/usr/include/odb/mysql/forward.hxx
/usr/include/odb/mysql/mysql-types.hxx
/usr/include/odb/mysql/mysql.hxx
/usr/include/odb/mysql/no-id-object-result.hxx
/usr/include/odb/mysql/no-id-object-result.txx
/usr/include/odb/mysql/no-id-object-statements.hxx
/usr/include/odb/mysql/no-id-object-statements.txx
/usr/include/odb/mysql/polymorphic-object-result.hxx
/usr/include/odb/mysql/polymorphic-object-result.txx
/usr/include/odb/mysql/polymorphic-object-statements.hxx
/usr/include/odb/mysql/polymorphic-object-statements.txx
/usr/include/odb/mysql/prepared-query.hxx
/usr/include/odb/mysql/query-dynamic.hxx
/usr/include/odb/mysql/query-dynamic.ixx
/usr/include/odb/mysql/query-dynamic.txx
/usr/include/odb/mysql/query.hxx
/usr/include/odb/mysql/query.ixx
/usr/include/odb/mysql/query.txx
/usr/include/odb/mysql/section-statements.hxx
/usr/include/odb/mysql/section-statements.txx
/usr/include/odb/mysql/simple-object-result.hxx
/usr/include/odb/mysql/simple-object-result.txx
/usr/include/odb/mysql/simple-object-statements.hxx
/usr/include/odb/mysql/simple-object-statements.ixx
/usr/include/odb/mysql/simple-object-statements.txx
/usr/include/odb/mysql/statement-cache.hxx
/usr/include/odb/mysql/statement-cache.txx
/usr/include/odb/mysql/statement.hxx
/usr/include/odb/mysql/statements-base.hxx
/usr/include/odb/mysql/tracer.hxx
/usr/include/odb/mysql/traits-calls.hxx
/usr/include/odb/mysql/traits.hxx
/usr/include/odb/mysql/transaction-impl.hxx
/usr/include/odb/mysql/transaction-impl.ixx
/usr/include/odb/mysql/transaction.hxx
/usr/include/odb/mysql/transaction.ixx
/usr/include/odb/mysql/version.hxx
/usr/include/odb/mysql/view-result.hxx
/usr/include/odb/mysql/view-result.txx
/usr/include/odb/mysql/view-statements.hxx
/usr/include/odb/mysql/view-statements.txx