# AS\_NULLABLE

```
AS_NULLABLE(expr)
```

Returns the provided value with its type changed from the original type to its nullable version.

Available in:

| Processors | SQL Studio |
| ---------- | ---------- |
| ✓          | ✓          |

*Sample code:*

```sql
USE `kafka`;
SELECT AS_NULLABLE(modified_at) AS null_value 
FROM users-events
LIMIT 100;
```

*Output:*

```json
{
  "value": {
    "null_value": null
  }
}
```

In case you want to know more about nullability scenarios, see [`here`](https://github.com/lensesio-dev/user-guide-docs/blob/6.2/using/applications/sql-processors/nullibility.md).