'Mark the DB as deleted.
:param conn: DB connection object
:param timestamp: timestamp to mark as deleted'

def _delete_db(self, conn, timestamp, force=False):

    conn.execute("\n                                                UPDATE    account_stat\n                                                SET    delete_timestamp    =    ?,\n                                                                status    =    'DELETED',\n                                                                status_changed_at    =    ?\n                                                WHERE    delete_timestamp    <    ?    ", (timestamp, timestamp, timestamp))
