> For the complete documentation index, see [llms.txt](https://litedb.gitbook.io/litedb-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://litedb.gitbook.io/litedb-docs/sql/data_types/overview.md).

# 数据类型总览

## 通用数据类型

LiteDB 支持的数据类型如下表所示：

| 数据类型         | 说明            |
| ------------ | ------------- |
| `INTEGER`    | 32 位整数        |
| `BIGINT`     | 64 位整数        |
| `FLOAT`      | 单精度浮点数        |
| `DOUBLE`     | 双精度浮点数        |
| `VARCHAR(n)` | 字符串，`n` 为最大长度 |
| `BOOLEAN`    | 布尔值           |
| `VECTOR(n)`  | 向量，`n` 为维度    |

## 数据类型特殊说明

部分数据类型拥有特殊的表现形式、特性和使用方式，以下分小节详细介绍：

* [VARCHAR(n)](/litedb-docs/sql/data_types/varchar.md)
* [BOOLEAN](/litedb-docs/sql/data_types/boolean.md)
* [VECTOR(n)](/litedb-docs/sql/data_types/vector.md)


---

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