> For the complete documentation index, see [llms.txt](https://docs.nexthink.com/platform/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.nexthink.com/platform/ja/understanding-key-data-platform-concepts/nexthink-query-language-nql/nql-functions/nql-sum.md).

# NQL sum()

`sum()` 関数は数値の列の合計を返します。

{% code overflow="wrap" lineNumbers="true" %}

```
users
| include web.events during past 24h
| where application.name == "Salesforce"
| compute usage_duration = duration.sum()
| where usage_duration != 0
| sort usage_duration desc
```

{% endcode %}

| ユーザー名            | ADフルネーム               | 使用期間   |
| ---------------- | --------------------- | ------ |
| jmansel\@kanopy  | ジェシー・マンサル             | 34分20秒 |
| lahmir\@kanopy   | ラトレル・アーミール            | 26分16秒 |
| abilete\@kanopy  | アディバー・バイレーテ           | 25分46秒 |
| kkamilah\@kanopy | Kolton Mariam Kamilah | 24分53秒 |
| jadnan\@kanopy   | Jimmie Adnan          | 24分47秒 |
| bkyrie\@kanopy   | ブレーデン・ブランデン・カイリー      | 24分7秒  |
| melyssa\@kanopy  | ミカ・マッケナ・エリッサ          | 23分6秒  |
| csami\@kanopy    | Cody Treyton Sami     | 23分3秒  |


---

# 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 dynamically by asking a question.

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

```
GET https://docs.nexthink.com/platform/ja/understanding-key-data-platform-concepts/nexthink-query-language-nql/nql-functions/nql-sum.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

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.
