The core PostgreSQL distribution includes the GiST operator classes shown in Table 64.1. (Some of the optional modules described in Appendix F provide additional GiST operator classes.)
Table 64.1. Built-in GiST Operator Classes
| Name | Indexed Data Type | Indexable Operators | Ordering Operators | 
|---|---|---|---|
| box_ops | box | &&&>&<&<|>><<<<|<@@>@|&>|>>~~= | <-> | 
| circle_ops | circle | &&&>&<&<|>><<<<|<@@>@|&>|>>~~= | <-> | 
| inet_ops | inet,cidr | &&>>>>=>>=<><<<<=<<== | |
| point_ops | point | >>>^<<<@<@<@<^~= | <-> | 
| poly_ops | polygon | &&&>&<&<|>><<<<|<@@>@|&>|>>~~= | <-> | 
| range_ops | any range type | &&&>&<>><<<@-|-=@>@> | |
| tsquery_ops | tsquery | <@@> | |
| tsvector_ops | tsvector | @@ | 
  For historical reasons, the inet_ops operator class is
  not the default class for types inet and cidr.
  To use it, mention the class name in CREATE INDEX,
  for example
CREATE INDEX ON my_table USING GIST (my_inet_column inet_ops);