int stored_field_cmp_to_item(THD *thd, Field *field, Item *item)

{

  if (field->cmp_type() == TIME_RESULT)

  {

    ..

    return my_time_compare(&field_time, item_time_cmp);

  }

  if (res_type == STRING_RESULT)

  {

    ...

    if (field_type == MYSQL_TYPE_DATE || field_type == MYSQL_TYPE_DATETIME ||

        field_type == MYSQL_TYPE_TIMESTAMP)

    {

      // This code is dead, because all temporal types are handled

      //in the first branch for TIME_RESULT

       ...

       return my_time_compare(&field_time, &item_time);

    }

    ..

  }

}