Memcache: Query failed(SELECT decode_url, headline, snippet, thumb_url, spam, twit_text,twit_user FROM ipl WHERE headline_hash = '36edc3a3e7ab4d5a3a2a13dea2dc1ebe') UNION (SELECT decode_url, headline, snippet, thumb_url, spam, twit_text, twit_user FROM archive WHERE headline_hash = '36edc3a3e7ab4d5a3a2a13dea2dc1ebe') limit 0,5