text: Alter Table osoba
      Add Column `nazwisko` varchar(20) After `imię`;
  
  Alter Table zwierzak
      Add Column `ownerID` int After `owner`;
  
  Update zwierzak Set zwierzak.ownerID = (Select id From osoba Where osoba.imię = zwierzak.owner);
  
  Alter Table zwierzak
      Drop Column `owner`,
      Change Column `ownerID` `owner` int Not null