Why select query is not working?

Question

CREATE OR REPLACE TYPE prod_type AS OBJECT (
pid INT,
pprice NUMBER,
MEMBER PROCEDURE display(pid IN NUMBER));
create table prod of prod_type (pid primary key);
CREATE OR REPLACE TYPE deal_type UNDER prod_type (
ctr NUMBER,
OVERRIDING MEMBER PROCEDURE display (pid IN NUMBER),
insert into prod values(deal_type(101, 4, 1));
insert into prod values(deal_type(102, 5, 0));
------below given select query is NOT WORKING ---------
select ctr from prod p where p.pid=101;
Thanks,
-Nid

Answer 1

------below given select query is NOT WORKINGWondering how you inserted data ...
SQL> CREATE OR REPLACE TYPE prod_type AS OBJECT (
  2  pid INT,
  3  pprice NUMBER,
  4  MEMBER PROCEDURE display(pid IN NUMBER));
  5  /
Type created.
SQL>
SQL> create table prod of prod_type (pid primary key);
Table created.
SQL>
SQL> CREATE OR REPLACE TYPE deal_type UNDER prod_type (
  2  ctr NUMBER,
  3  OVERRIDING MEMBER PROCEDURE display (pid IN NUMBER),
  4  );
  5  /
Warning: Type created with compilation errors.
SQL> sho err
Errors for TYPE DEAL_TYPE:
LINE/COL ERROR
4/1      PLS-00103: Encountered the symbol ")" when expecting one of the
         following:
         , not pragma <an identifier>
         <a double-quoted delimited-identifier> final instantiable
         current order overriding static member constructor map
SQL> CREATE OR REPLACE TYPE deal_type UNDER prod_type (
  2  ctr NUMBER,
  3  OVERRIDING MEMBER PROCEDURE display (pid IN NUMBER));
  4  /
Warning: Type created with compilation errors.
SQL> sho err
Errors for TYPE DEAL_TYPE:
LINE/COL ERROR
1/1      PLS-00590: attempting to create a subtype UNDER a FINAL type
SQL>You made an attempt to create a subtype UNDER a FINAL type - that the reason why can not work ...
Avoid deriving a subtype from this FINAL type.
HTH