oracle8.1.6 insert into ec_picklist_items (picklist_item_id, picklist_item, picklist_name, sort_key, last_modified, last_modifying_user, modified_ip_address) values (:picklist_item_id, :picklist_item, :picklist_name, (:prev_sort_key + :next_sort_key)/2, sysdate, :user_id,:address)