configure_connection

# File activerecord/lib/active_record/connection_adapters/mysql_adapter.rb, line 907
        def configure_connection
          encoding = @config[:encoding]
          execute("SET NAMES '#{encoding}'", :skip_logging) if encoding

          # By default, MySQL 'where id is null' selects the last inserted id.
          # Turn this off. http://dev.rubyonrails.org/ticket/6778
          execute("SET SQL_AUTO_IS_NULL=0", :skip_logging)
        end