Show the name, average attendance, total attendance for stadiums where no accidents happened.
return stadiums ;return stadiums with  accidents ;return #1 besides #2 ;return names of  #3 ;return average attendance of  #3 ;return total attendance of  #3 ;return #4 ,  #5 , #6
['select', 'select', 'discard', 'project', 'project', 'project', 'union']