---
title: in
description: |
  Return `true` if a given value matches any value in a list of candidates,
  otherwise return `false`.
url: https://coralogix.com/docs/dataprime/language-reference/functions-reference/general/in/
product: dataengine
feature: DataPrime Language
feature_id: dataprime-language
feature_identifier: dataengine/dataprime-language
last_updated: '2026-10-21'
---

# `in`

## Description

Return `true` if a given value matches any value in a list of candidates, otherwise return `false`.

## Syntax

Like many functions in DataPrime, `in` supports<!-- --> [two notations](https://coralogix.com/docs/dataprime/language-reference/functions-reference.md),<!-- --> **function** and **method**. These interchangeable forms allow flexibility in how you structure expressions.

* Function notation
* Method notation

```
in(comparand: T, value: T, ...values: T): bool
```

```
(comparand: T).in(value: T, ...values: T): bool
```

## Arguments

| Name        | Type | Required | Description                              |
| ----------- | ---- | -------- | ---------------------------------------- |
| `comparand` | `T`  | **true** | The value to check                       |
| `value`     | `T`  | **true** | The first candidate to compare against   |
| `...values` | `T`  | **true** | Additional candidates to compare against |

## Example

**Use case: Flag membership in a predefined group**

A team name can be compared against a list of department members to determine if it belongs to Engineering.

### Example data

```
{

    "team": "Developers"

},

{

    "team": "Marketing"

},

{

    "team": "QA Testing"

}
```

### Example query

* Function notation
* Method notation

```
create is_in_engineering from in(team, 'Developers', 'QA Testing', 'Front End Engineers', 'DevOps Team')
```

```
create is_in_engineering from team.in('Developers', 'QA Testing', 'Front End Engineers', 'DevOps Team')
```

### Example output

```
{

    "team": "Developers",

    "is_in_engineering": true

},

{

    "team": "Marketing",

    "is_in_engineering": false

},

{

    "team": "QA Testing",

    "is_in_engineering": true

}
```