def select_single_column(engine, column):
s = select([column])<EOL>return column.name, [row[<NUM_LIT:0>] for row in engine.execute(s)]<EOL>
Select data from single column.

Example::

    >>> select_single_column(engine, table_user.c.id)
    [1, 2, 3]

    >>> select_single_column(engine, table_user.c.name)
    ["Alice", "Bob", "Cathy"]