w='hello'
print(w,'\n',len(w))

-- Code Here
SELECT total_price
FROM transactions
WHERE Customer IS NOT NULL
ORDER BY total_price DESC

-- Code Here

select city_name, 
  sum(confirmed_cases) confirmed_cases , 
  sum(recovered_cases) recovered_cases, 
  sum(death_cases) death_cases
from cases c
join dati d
  on d.code = c.dati_code
group by city_name
order by confirmed_cases desc