DECLARE
  CURSOR emp_cursor IS SELECT empno,ename,job FROM emp;
  v_empno emp.empno%TYPE;
  v_name emp.ename%TYPE;
  v_job emp.job%TYPE;
BEGIN
  OPEN emp_cursor;
  LOOP
    FETCH emp_cursor INTO v_empno,v_name,v_job;
    DBMS_OUTPUT.PUT_LINE(‘员工号为:‘||v_empno||‘姓名是‘||v_name||‘职位：‘||v_job);
    EXIT WHEN emp_cursor%NOTFOUND;
  END LOOP;
  CLOSE emp_cursor;
END; 

DECLARE
  CURSOR emp_cursor IS SELECT empno,ename,job FROM emp;
  v_empno emp.empno%TYPE;
  v_name emp.ename%TYPE;
  v_job emp.job%TYPE;
BEGIN
  OPEN emp_cursor;
  LOOP
       FETCH emp_cursor INTO v_empno,v_name,v_job;
       EXIT WHEN emp_cursor%NOTFOUND;
  END LOOP;
  IF emp_cursor%ISOPEN THEN
    DBMS_OUTPUT.PUT_LINE(‘游标已打开‘);
    DBMS_OUTPUT.PUT_LINE(‘读取了‘||emp_cursor%ROWCOUNT||‘行‘);
  ELSE
    DBMS_OUTPUT.PUT_LINE(‘游标没有打开‘);
  END IF;  
  CLOSE emp_cursor;
END;

CREATE TABLE emp_new
AS
SELECT * FROM emp;

BEGIN
  UPDATE emp_new SET sal = sal+500 WHERE empno=&empno;
  IF SQL%FOUND THEN
    DBMS_OUTPUT.PUT_LINE(‘成功修改‘);
    COMMIT;
  ELSE
    DBMS_OUTPUT.PUT_LINE(‘修改失败‘);
    ROLLBACK;
  END IF;
END;

DECLARE
CURSOR emp_cursor IS SELECT empno,ename,job FROM emp;
BEGIN
  FOR emp_record IN emp_cursor LOOP
    DBMS_OUTPUT.PUT_LINE(‘员工号：‘||emp_record.empno||‘员工姓名‘||emp_record.ename||‘员工职位‘||emp_record.job);
  END LOOP;
END;

BEGIN
  FOR emp_record IN (SELECT empno,ename,job FROM emp) LOOP
    DBMS_OUTPUT.PUT_LINE(‘员工号：‘||emp_record.empno||‘员工姓名‘||emp_record.ename||‘员工职位‘||emp_record.job);
  END LOOP;
END;

DECLARE
CURSOR emp_cursor(dno NUMBER)IS SELECT empno,ename,job FROM emp WHERE deptno=dno;
BEGIN
  FOR emp_record IN emp_cursor(&dno) LOOP
    DBMS_OUTPUT.PUT_LINE(‘员工号‘||emp_record.empno||‘姓名‘||emp_record.ename||‘职位‘||emp_record.job);
  END LOOP;
END;

CREATE TABLE emp_new
AS
SELECT * FROM emp;

DECLARE
CURSOR empnew_cursor IS SELECT ename,job FROM emp_new FOR UPDATE;
BEGIN
  FOR empnew_record IN empnew_cursor LOOP
    DBMS_OUTPUT.PUT_LINE(‘姓名‘||empnew_record.ename||‘职位‘||empnew_record.job);
    IF empnew_record.job=‘PRESIDENT‘ THEN
      UPDATE emp_new SET sal=sal+1000 WHERE CURRENT OF empnew_cursor;
    ELSIF empnew_record.job=‘MANAGER‘ THEN
      UPDATE emp_new SET sal=sal+500 WHERE CURRENT OF empnew_cursor;
    END IF;
  END LOOP;
  COMMIT;
END;

SELECT * FROM EMP WHERE job in(‘PRESIDENT‘,‘MANAGER‘);
SELECT * FROM EMP_NEW WHERE job in(‘PRESIDENT‘,‘MANAGER‘);