What is the channel code and contact number of the customer contact channel that was active for the longest time?
return customer contact  channels ;return time active of #1 ;return #1 where #2 is the  highest ;return channel  code of #3 ;return contact  number of #3 ;return #4 ,  #5
['select', 'project', 'comparative', 'project', 'aggregate', 'union']