简单的PL/SQL

Declare
         person_id_v Number(10) :=70;
         full_name_v Varchar2(240) ;
Begin
     Select full_name Into full_name_v
     From hr.per_all_people_f Where person_id = person_id_v;
     If full_name_v = '吴' Then
       dbms_output.PUT_LINE('吴);
      Elsif full_name_v ='aa' Then
         dbms_output.PUT_LINE('aa');
      Else
         dbms_output.PUT_LINE('else');
      End If;
End;