The B-tree comparison operators (=, <>, <, <=, >, >=) and the hash operator are defined on tquadbin through the generic temporal comparison machinery, ordering by the underlying temporal-value sequence. They support the tquadbin_btree_ops and tquadbin_hash_ops operator classes used by GROUP BY, DISTINCT, ORDER BY, and merge / hash joins. As with tbigint, the int64 ordering of QUADBIN identifiers carries no geographic meaning — see the section called “Operational notes”.