select
rel_id
from
cr_item_rels
where
item_id = :item_id
order by
order_n, rel_id
update cr_item_rels
set order_n = :i
where rel_id = :rel_id
select
rel_id
from
cr_child_rels
where
parent_id = :item_id
order by
order_n, rel_id
update cr_child_rels
set order_n = :i
where rel_id = :rel_id