docs: def standard_db_name(file_column_name):
      """return a standard name by following rules:
      1. find all regular expression partners ((IDs)|(ID)|([A-Z][a-z]+)|([A-Z]{2,}))
      2. lower very part and join again with _
      This method is only used if values in table[model]['columns'] are str
  
      :param str file_column_name: name of column in file
      :return: standard name
      :rtype: str
      """
      found = id_re.findall(file_column_name)
  
      if not found:
          return file_column_name
  
      return '_'.join(x[0].lower() for x in found)