Elf Sternberg

This works too, but it's a little less funny, IMHO.

-- Finds the key *directly* sought, also prev and next existing keys.
select key from pageviews 
  where key in
        (select key from pageviews where url like '%elf%' and key >10000
          ORDER BY key ASC LIMIT 1)
    -- find prev key
    or key in
      (select key from pageviews where 
        key < 
        (select key from pageviews where url like '%elf%' and key >10000
          ORDER BY KEY ASC LIMIT 1)
      ORDER BY key DESC LIMIT 1)
    -- find next key
    or key in
      (select key from pageviews where    
        key > 
        (select key from pageviews where url like '%elf%' and key >10000
          ORDER BY KEY ASC LIMIT 1)
      ORDER BY key ASC LIMIT 1)
;