Who are the customers that had more than 1 policy? List the customer details and id.
return customers ;return policies ;return the  number of  #2 for each  #1 ;return #1 where #3 is  more than 1 ;return the  customer details of  #4 ;return the  customer id of  #4 ;return #5 ,  #6
['select', 'select', 'group', 'comparative', 'project', 'project', 'union']