akkoma/priv/repo/migrations/20181201105617_add_uui_ds_to_user_info.exs

defmodule Pleroma.Repo.Migrations.AddUUIDsToUserInfo do
  use Ecto.Migration

  def up do
    execute("update users set info = jsonb_set(info, '{\"id\"}', to_jsonb(uuid_generate_v4()))")
  end

  def down, do: :ok
end