gitlab-org--gitlab-foss/db/migrate/20130926081215_change_owner_id_for_group.rb

class ChangeOwnerIdForGroup < ActiveRecord::Migration
  def up
    change_column :namespaces, :owner_id, :integer, null: true
  end

  def down
    change_column :namespaces, :owner_id, :integer, null: false
  end
end