CREATE PACKAGE emp_data AS
TYPE EmpCurTyp IS REF CURSOR RETURN emp%ROWTYPE;
PROCEDURE open_emp_cv (emp_cv IN OUT EmpCurTyp, choice IN NUMBER);
END emp_data;CREATE PACKAGE BODY emp_data AS
PROCEDURE open_emp_cv (emp_cv IN OUT EmpCurTyp,choice IN NUMBER) IS
BEGIN
IF choice = 1 THEN
OPEN emp_cv FOR SELECT * FROM emp WHERE comm IS NOT NULL;
ELSIF choice = 2 THEN
OPEN emp_cv FOR SELECT * FROM emp WHERE sal > 2500;
ELSIF choice = 3 THEN
OPEN emp_cv FOR SELECT * FROM emp WHERE deptno = 20;
END IF;
END open_emp_cv;
END emp_data;
TYPE EmpCurTyp IS REF CURSOR RETURN emp%ROWTYPE;
PROCEDURE open_emp_cv (emp_cv IN OUT EmpCurTyp, choice IN NUMBER);
END emp_data;CREATE PACKAGE BODY emp_data AS
PROCEDURE open_emp_cv (emp_cv IN OUT EmpCurTyp,choice IN NUMBER) IS
BEGIN
IF choice = 1 THEN
OPEN emp_cv FOR SELECT * FROM emp WHERE comm IS NOT NULL;
ELSIF choice = 2 THEN
OPEN emp_cv FOR SELECT * FROM emp WHERE sal > 2500;
ELSIF choice = 3 THEN
OPEN emp_cv FOR SELECT * FROM emp WHERE deptno = 20;
END IF;
END open_emp_cv;
END emp_data;
AS
TYPE myrctype IS REF CURSOR; PROCEDURE get (p_id NUMBER, p_rc OUT myrctype);
END pkg_test;
/CREATE OR REPLACE PACKAGE BODY pkg_test
AS
PROCEDURE get (p_id NUMBER, p_rc OUT myrctype)
IS
sqlstr VARCHAR2 (500);
BEGIN
IF p_id = 0 THEN
OPEN p_rc FOR
SELECT ID, NAME, sex, address, postcode, birthday
FROM student;
ELSE
sqlstr :=
'select id,name,sex,address,postcode,birthday
from student where id=:w_id';
OPEN p_rc FOR sqlstr USING p_id;
END IF;
END get;
END pkg_test;
/