# FIRSTBY

FIRSTBY(`column`, `partition column`)

Returns the first element within a column when grouped by unique values within a `partition column`

## Arguments <a href="#arguments" id="arguments"></a>

| Argument           | Description                     |
| ------------------ | ------------------------------- |
| `column`           | Column of any type              |
| `partition column` | Column containing unique values |

## Outputs <a href="#outputs" id="outputs"></a>

Outputs column of values corresponding to the first value within partitioned groups

## Example <a href="#examples" id="examples"></a>

{% embed url="<https://datawrapper.dwcdn.net/HmXkk/2/>" %}