PostgreSQL 9.4.26 Documentation
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# 57.2. Built-in Operator Classes

The core PostgreSQL distribution includes the SP-GiST operator classes shown in Table 57-1.

Table 57-1. 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 | `&&` `&<` `&>` `-|-` `<<` `<@` `=` `>>` `@>`
`text_ops` | `text` | `<` `<=` `=` `>` `>=` `~<=~` `~<~` `~>=~` `~>~`

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.

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