# 64.2. Built-in Operator Classes

The core PostgreSQL distribution includes the GiST operator classes shown in [Table 64.1](https://www.postgresql.org/docs/12/gist-builtin-opclasses.html#GIST-BUILTIN-OPCLASSES-TABLE). (Some of the optional modules described in [Appendix F](https://www.postgresql.org/docs/12/contrib.html) 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);
```