[Esclarecimento de dúvida - Operadores Count sum e avg]

Olá bom dia, 

 

Como faço para encontrar qual o cliente que mais alugou por valor monetário? 

select cus.first_name, cus.last_name, 
        addr.address, cit.city, cou.country, ren.staff_id, pay.amount  
   
from customer cus 

     inner join address addr 
     on cus.address_id = addr.address_id  

    inner join city cit 
    on addr.city_id = cit.city_id 

   inner join country cou
   on cit.country_id = cou.country_id
   
   INNER  JOIN rental ren 
   on cus.customer_id = ren.customer_id
   
   inner join payment pay 
   on ren.rental_id = pay.rental_id
   
   where amount like >= '10' 
   
               
        group by cus.first_name, cus.last_name, 
        addr.address, cit.city, cou.country, ren.staff_id, pay.amount  
   
                      
        order by amount asc ;