# NQL sum()

The `sum()` function returns the total sum of a numeric column.

{% 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 %}

| Username         | AD → Full name        | Usage duration |
| ---------------- | --------------------- | -------------- |
| jmansel\@kanopy  | Jessy Mansel          | 34min 20s      |
| lahmir\@kanopy   | Latrell Ahmir         | 26min 16s      |
| abilete\@kanopy  | Adhibhaar Bilete      | 25min 46s      |
| kkamilah\@kanopy | Kolton Mariam Kamilah | 24min 53s      |
| jadnan\@kanopy   | Jimmie Adnan          | 24min 47s      |
| bkyrie\@kanopy   | Braedyn Branden Kyrie | 24min 7s       |
| melyssa\@kanopy  | Micah Mackenna Elyssa | 23min 6s       |
| csami\@kanopy    | Cody Treyton Sami     | 23min 3s       |