How do I query items_by_column_values where the value is null (None)?

How do I query items_by_column_values where the value is null (None)?
In particular, I am interested in column types of status and link.

query {
  items_by_column_values(
    board_id: 1234567890,
    column_id: "status",
    column_value: "null"
  )
  {
    id
    name
    column_values {
      id
      text
      value
    }
  }
}