client_encoding

# File activerecord/lib/active_record/connection_adapters/mysql_adapter.rb, line 391
      def client_encoding
        return @client_encoding if @client_encoding

        result = exec_query(
          "SHOW VARIABLES WHERE Variable_name = 'character_set_client'",
          'SCHEMA')
        @client_encoding = ENCODINGS[result.rows.last.last]
      end