Memcache: Query failed(SELECT decode_url, headline, snippet, thumb_url, spam, twit_text,twit_user FROM ipl WHERE headline_hash = 'ec948655babf4c8d1cc674214f4e226a') UNION (SELECT decode_url, headline, snippet, thumb_url, spam, twit_text, twit_user FROM archive WHERE headline_hash = 'ec948655babf4c8d1cc674214f4e226a') limit 0,5