Настройка:
CREATE TABLE table1 (col1 varchar2(10));
CREATE OR REPLACE TYPE mytype authid definer AS OBJECT
(
thing1 varchar2(10),
thing2 date
);
Ответ:
ALTER TABLE table1 ADD col2 mytype;
INSERT INTO table1 VALUES ('a', mytype('A',sysdate));
SELECT col1, t.col2.thing1, t.col2.thing2 FROM table1 t;