# 65.2. Built-in Operator Classes

The core PostgreSQL distribution includes the SP-GiST operator classes shown in [Table 63.1](https://www.postgresql.org/docs/10/static/spgist-builtin-opclasses.html#SPGIST-BUILTIN-OPCLASSES-TABLE).

#### **Table 63.1. Built-in SP-GiST Operator Classes**

| Name             | Indexed Data Type | Indexable Operators                                                 |
| ---------------- | ----------------- | ------------------------------------------------------------------- |
| `kd_point_ops`   | `point`           | `<<` `<@` `<^` `>>` `>^` `~=`                                       |
| `quad_point_ops` | `point`           | `<<` `<@` `<^` `>>` `>^` `~=`                                       |
| `range_ops`      | any range type    | `&&` `&<` `&>` `-\|-` `<<` `<@` `=` `>>` `@>`                       |
| `box_ops`        | `box`             | `<<` `&<` `&&` `&>` `>>` `~=` `@>` `<@` `&<\|` `<<\|` `\|>>` `\|&>` |
| `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 which may offer better performance in some applications.