sqlite_type_helper.py 文件源码

def GetDuplicateColumnNames(
      self, columns: sql_query_column_model.SQLColumnModel) -> [str]:
    """Find out if the query has duplicate column names and if a alias is
        needed.

    Args:
      columns (sql_query_column_model.SQLColumnModel): all columns parsed
          from the cursor
    Returns:
      [str]: a list of all the duplicate column names, if its empty it means it
          is a distinct list of columns
    """
    single_column_name_list = [column.sql_column for column in columns]
    duplicate_list = [column for column, count in
                      collections.Counter(single_column_name_list).items() if
                      count > 1]
    return sorted(duplicate_list)