> For the complete documentation index, see [llms.txt](https://docs.cascade.io/cascade/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.cascade.io/cascade/functions-and-expressions/functions/table/fillnull.md).

# FILLNULL

FILLNULL(`column`, `fill value`)

Fills the null values within a `column` with a specified `fill value`

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

| Argument     | Description                       |
| ------------ | --------------------------------- |
| `column`     | Column containing null values     |
| `fill value` | Value to replace null values with |

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

A column matching `column` with all null values replaced by the specified `fill value`

### Example

{% embed url="<https://datawrapper.dwcdn.net/ZivUw/1>" %}