# 66.7. 範例

PostgreSQL 的主要發行版包括先前在 [Table 66.1](/14/internals/gin-indexes/built-in-operator-classes.md#table-66-1-built-in-gin-operator-classes) 中所列出的 GIN 運算子類。以下是在 contrib 套件中包含的 GIN 運算子類：

`btree_gin`

B-tree equivalent functionality for several data types

`hstore`

Module for storing (key, value) pairs

`intarray`

Enhanced support for `int[]`

`pg_trgm`

Text similarity using trigram matching


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.postgresql.tw/14/internals/gin-indexes/examples.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.