函数与过程还没看过有函数重载,但在oracle9i对像类型可以实现继承,函数重载,函数重用.
CREATE TYPE person_t AS OBJECT (name VARCHAR2(100), ssn NUMBER)
NOT FINAL;CREATE TYPE employee_t UNDER person_t
(dept_id NUMBER, salary NUMBER) NOT FINAL;CREATE TYPE part_time_emp_t UNDER employee_t (num_hrs NUMBER);
CREATE TYPE person_t AS OBJECT (name VARCHAR2(100), ssn NUMBER)
NOT FINAL;CREATE TYPE employee_t UNDER person_t
(dept_id NUMBER, salary NUMBER) NOT FINAL;CREATE TYPE part_time_emp_t UNDER employee_t (num_hrs NUMBER);
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