Di MySQL ini berfungsi
SELECT foobar.description
FROM foobar
ORDER BY foobar.description <> 'fff',
foobar.description ASC
Tetapi secara umum Anda juga dapat menggunakan case
SELECT foobar.description
FROM foobar
ORDER BY case when foobar.description = 'fff' then 1 else 2 end,
foobar.description ASC