Failed to execute the SQL query

select count(*) from  gregarius_item i inner join  gregarius_channels  c on c.id = i.cid  where i.unread & 1 and not(i.unread & 8)  and not(c.mode & 8)  and not(i.unread & 4) and c.parent=2 

Error 145: Table './planetpoly/gregarius_item' is marked as crashed and should be repaired