> For the complete documentation index, see [llms.txt](https://docs.redivis.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.redivis.com/api/client-libraries/redivis-r/reference/query/queryusdfile.md).

# Query$file

### Query$<mark style="color:purple;">file</mark>(*name, file\_id\_variable, file\_name\_variable*) → [**File**](/api/client-libraries/redivis-r/reference/file.md)

Reference a file within the query results. Only relevant for query results that contain at least one variable with file ids. If the query result contains multiple file id variables, must specify the `file_id_variable` parameter.

Same as calling `query$to_directory()$get(name)`.

### **Parameters:**

**`name` :&#x20;*****str***\
The full name of the file.

**`file_id_variable` :&#x20;*****str, optional***\
The name of the variable in the query results containing file ids. Only required if the query results contain more than one fileId variable.

**`file_name_variable` :&#x20;*****str, optional***\
The name of the variable in the query result containing the file name. If unspecified, will look for a variable `file_name` , or otherwise will use the file's original name.

### **Returns:**&#x20;

[**File**](/api/client-libraries/redivis-r/reference/file.md)


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# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

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

Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters:

```
GET https://docs.redivis.com/api/client-libraries/redivis-r/reference/query/queryusdfile.md?ask=<question>&goal=<user_goal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case.

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.