Cómo mostrar las sentencias SQL en la consola de Rails

if ENV['RAILS_ENV']
  # Called after the irb session is initialized and Rails has been loaded
  IRB.conf[:IRB_RC] = Proc.new do
    logger = Logger.new(STDOUT)
    ActiveRecord::Base.logger = logger
    ActiveResource::Base.logger = logger
  end
end

>> Oficina.find 1
  Oficina Load (1.2ms)   SELECT * FROM "oficinas" WHERE ("oficinas"."id" = 1) 
=> #<Oficina id: 1, nombre: "CAMPECHE BCMR", organizacion_id: 2, activa: true>