> ## Documentation Index
> Fetch the complete documentation index at: https://docs.anlytic.com/llms.txt
> Use this file to discover all available pages before exploring further.

# First

Returns the first value in the current partition or window, regardless of the current row's position.

**Category:** `window`

**Syntax:**

```
First([column])
```

**Returns:** `Same as input type`

**Context Filtering:** ✓ Yes

## Parameters

| Name     | Type     | Required | Description                                 |
| -------- | -------- | -------- | ------------------------------------------- |
| `column` | `column` | ✓ Yes    | The column to retrieve the first value from |

## Validation

* Minimum parameters: 1
* Maximum parameters: 1

## Examples

```
First([Sales])
```

Returns the sales value from the first row in the partition.

```
First([Opening_Price])
```

Returns the opening price from the first day in the partition, useful for comparing current values to initial values.

```
First([Customer_Name])
```

Returns the first customer name in the ordered partition.

## Related Functions

* [Last](last) - Returns last value in partition
* [Lag](lag) - Returns value from previous row
* [Lead](lead) - Returns value from following row
* [RowNumber](rownumber) - Assigns sequential row numbers