What are the the full names and ids for all customers, and how many accounts does each have?
return customers ;return full names of  #1 ;return ids of  #1 ;return accounts of  #1 ;return number of  #4 for each  #1 ;return #2 ,  #3 ,   #5
['select', 'project', 'project', 'project', 'group', 'union']