postgresql7.1
select case when count(*) = 0 then 0 else 1 end
from apm_packages p, site_nodes s
where package_id = :package_id
and p.package_id = s.object_id
select apm_package__delete(:package_id)
select case when count(*) = 0 then 0 else 1 end from apm_packages
where package_id = :package_id