Failed to execute the SQL query

select count(*) as cnt  from  item  i  inner join  channels  c on (c.id = i.cid)  inner join  folders  f on (f.id = c.parent)  where  not(i.unread & 8) and  not(i.unread & 4) and  1 = 1  and month(ifnull(i.pubdate,i.added))= 5  and year(ifnull(i.pubdate, i.added))= 2009  and dayofmonth(ifnull(i.pubdate,i.added))= 26  and  1=1 

Error 2013: Lost connection to MySQL server during query