Supported Versions: Current (11) / 10 / 9.6 / 9.5 / 9.4
Development Versions: 12 / devel
This documentation is for an unsupported version of PostgreSQL.
You may want to view the same page for the current version, or one of the supported versions listed above instead.

65.2. Built-in Operator Classes

The core PostgreSQL distribution includes the SP-GiST operator classes shown in Table 65.1.

Table 65.1. Built-in SP-GiST Operator Classes

Name Indexed Data Type Indexable Operators Ordering Operators
kd_point_ops point << <@ <^ >> >^ ~= <->
quad_point_ops point << <@ <^ >> >^ ~= <->
range_ops any range type && &< &> -|- << <@ = >> @>
box_ops box << &< && &> >> ~= @> <@ &<| <<| |>> |&>
poly_ops polygon << &< && &> >> ~= @> <@ &<| <<| |>> |&> <->
text_ops text < <= = > >= ~<=~ ~<~ ~>=~ ~>~ ^@
inet_ops inet, cidr && >> >>= > >= <> << <<= < <= =

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 that may offer better performance in some applications.

The quad_point_ops, kd_point_ops and poly_ops operator classes support the <-> ordering operator, which enables the k-nearest neighbor (k-NN) search over indexed point or polygon data sets.