DataSet data = new DataSet();
                System.Globalization.CultureInfo myCulture = new System.Globalization.CultureInfo("ru-RU");
                data.Locale = myCulture;

                MySqlDataAdapter masterDataAdapter = new MySqlDataAdapter(sqlWorkers, Properties.Settings.Default.MyConnectionString);
                masterDataAdapter.Fill(data, "workers");

                MySqlDataAdapter detailsDataAdapter = new MySqlDataAdapter(sqlPacient, Properties.Settings.Default.MyConnectionString);
                detailsDataAdapter.Fill(data, "patient");

select idw, ids, idp, fio, data_r, phone as Телефон from workers