select so.*,
case when s.single_section_p then '' else ss.name
end as section_name
from
survey_objects so left join survey_sections ss on
so.section_id=ss.section_id and ss.section_id <> so.object_id,
surveys s
where s.survey_id=:object_id and so.survey_id=s.survey_id
order by so.object_id
select * from survey_objects where section_id=:object_id
select * from survey_objects where object_id=:object_id