> ## Documentation Index
> Fetch the complete documentation index at: https://private-7c7dfe99-fix-nav-issues.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

> Documentation for the Nothing special data type

# Nothing

The only purpose of this data type is to represent cases where a value is not expected. So you can't create a `Nothing` type value.

For example, literal [NULL](/reference/syntax#null) has type of `Nullable(Nothing)`. See more about [Nullable](/reference/data-types/nullable).

The `Nothing` type can also used to denote empty arrays:

```sql theme={null}
SELECT toTypeName(array())
```

```text theme={null}
┌─toTypeName(array())─┐
│ Array(Nothing)      │
└─────────────────────┘
```