> ## 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.

# DateTrunc

Truncates the date to the specified date part.

**Category:** `date`

**Syntax:**

```
DateTrunc("part", [date_column])
```

**Returns:** `DateTimeColumn`

**Context Filtering:** ✓ Yes

## Parameters

| Name          | Type               | Required | Description                                       |
| ------------- | ------------------ | -------- | ------------------------------------------------- |
| `part`        | `text`             | ✓ Yes    | The part to truncate to (year, month, day, etc.). |
| `date_column` | `column\|datetime` | ✓ Yes    | The date to truncate.                             |

**Allowed Values for `part`:** `year`, `quarter`, `month`, `week`, `day`, `hour`, `minute`, `second`

**Allowed Column Types:** DATETIME, DATE

## Validation

* Minimum parameters: 2
* Maximum parameters: 2

## Examples

```
DateTrunc("month", [OrderDate])
```

Truncates to first day of month.