def change_owner_to(conn, schema, table, role):
    """Changes table's ownership to role

    Parameters
    ----------
    conn : sqlalchemy connection object
        A valid connection to a database
    schema : str
        The database schema
    table : str
        The database table
    role : str
        database role that access is granted to

    """
    sql_str = ("""ALTER TABLE {schema}.{table}
        OWNER TO {role};""".
        format(schema=schema, table=table, role=role))
    conn.execute(sql_str)
