Oracle PL/SQL Tutorial/System Tables Data Dictionary/sys nc rowinfo

Query sys_nc_rowinfo from a table with user defined column type

SQL>
SQL> create or replace type address_type as object
  2    ( city    varchar2(30),
  3      street  varchar2(30),
  4      state   varchar2(2),
  5      zip     number
  6    )
  7  /
Type created.
SQL> create or replace type person_type as object
  2    ( name             varchar2(30),
  3      dob              date,
  4      home_address     address_type,
  5      work_address     address_type
  6    )
  7  /
Type created.
SQL> create table people of person_type
  2  /
Table created.
SQL> insert into people values ( "Tom", "15-mar-1965",
  2    address_type( "Reston", "1 Street", "Va", "45678" ),
  3    address_type( "Redwood", "1 Way", "Ca", "23456" ) );
1 row created.
SQL> /
1 row created.
SQL>
SQL> select sys_nc_rowinfo$ from people;
SYS_NC_ROWINFO$(NAME, DOB, HOME_ADDRESS(CITY, STREET, STATE, ZIP), WORK_ADDRESS(CITY, STREET, STATE,
----------------------------------------------------------------------------------------------------
PERSON_TYPE("Tom", "15-MAR-65", ADDRESS_TYPE("Reston", "1 Street", "Va", 45678), ADDRESS_TYPE("Redwo
od", "1 Way", "Ca", 23456))
PERSON_TYPE("Tom", "15-MAR-65", ADDRESS_TYPE("Reston", "1 Street", "Va", 45678), ADDRESS_TYPE("Redwo
od", "1 Way", "Ca", 23456))

SQL>
SQL> drop table people;
Table dropped.
SQL>
SQL> drop type person_type;
Type dropped.
SQL> drop type address_type;
Type dropped.
SQL>