The core Postgres Pro Enterprise distribution includes the SP-GiST operator classes shown in Table 61.1.

Of the two operator classes for type point, quad_point_ops is the default. kd_point_ops supports the same operators but uses a different index data structure which may offer better performance in some applications.

By supporting the ordering <-> operator the quad_point_ops and kd_point_ops provide a user with the ability to perform a K-nearest-neighbor search over the indexed point dataset.