codice:
select p.nome,p.cognome,tab2.datachiamata,tab2.rispostaallachiamata
from
(select concat(id_persona,max(datachiamata)) as ultima from chiamate
group by id_persona) as tab1
left join chiamate as tab2 ON tab1.ultima = concat(tab2.id_persona,tab2.datachiamata)
inner join persone as p on tab2.id_persona = p.id