select count(*) from ec_subsubcategories where subsubcategory_id=:subsubcategory_id and sort_key=:sort_key
select count(*) from ec_subsubcategories where subsubcategory_id=:next_subsubcategory_id and sort_key=:next_sort_key
update ec_subsubcategories set sort_key=:next_sort_key where subsubcategory_id=:subsubcategory_id
update ec_subsubcategories set sort_key=:sort_key where subsubcategory_id=:next_subsubcategory_id