postgresql7.1
select lm1.message_key,
lm1.package_key,
lm1.message as default_message,
coalesce(lm2.message, 'TRANSLATION MISSING') as translated_message
from lang_messages lm1 left outer join
lang_messages lm2 on (lm2.locale = :locale and lm2.message_key = lm1.message_key and lm2.package_key = lm1.package_key)
where lm1.locale = :default_locale
and lm1.package_key = :package_key
order by upper(lm1.message_key)
offset $page_start
limit 10