Good morning, I have a table with multiple records, from which I want to
retrieve the last N records, these in turn must belong to the same
point. IdReg__|Cod.Punto|pH__|Od|NTU … 2210|PTO001__|7.45|5.41|12.1
2211|PTO002_|8.15|7.97|7.88 2212|PTO003_|7...