Memcache: Query failed(SELECT decode_url, headline, snippet, thumb_url, spam, twit_text,twit_user FROM ipl WHERE headline_hash = 'aa13354e08422710d6da0890e0506001') UNION (SELECT decode_url, headline, snippet, thumb_url, spam, twit_text, twit_user FROM archive WHERE headline_hash = 'aa13354e08422710d6da0890e0506001') limit 0,5