How can I upsert without creating an identity on Postgres? I want to check if a record exists with a combination of parent_id and name for some records, but I do not want to enforce it with Postgres.

  postgres do
    table "entities"
    repo MyApp.Repo

    references do
      reference :children, index?: true, on_delete: :delete
      reference :parent, index?: true, on_delete: :delete
    end

    # skip_identities [:parent_id_child_name]
  end

  identities do
    identity :parent_id_child_name, [:parent_id, :name] do
      # eager_check? true
      # pre_check? true
    end
  end

  actions do
    defaults [:read]

    create :upsert_data do
      accept [:parent_id, :name, :data]
      upsert? true
      upsert_identity :parent_id_child_name
    end
  end

skip_identities cannot compile.

error: undefined function skip_identities/1 (there is no such import)`

eager_check? and pre_check? doesn’t update.

%Ash.Error.Changes.InvalidChanges{
       fields: [:parent_id, :name],
       message: "has already been taken",