Memcache: Query failed(SELECT decode_url, headline, snippet, thumb_url, spam, twit_text,twit_user FROM ipl WHERE headline_hash = '180673aa82d98c645018a84fc7fa1666') UNION (SELECT decode_url, headline, snippet, thumb_url, spam, twit_text, twit_user FROM archive WHERE headline_hash = '180673aa82d98c645018a84fc7fa1666') limit 0,5