This Is A FineDay

--定義EXCEPTION
SET SERVEROUTPUT ON
DECLARE
?????? A exception;
BEGIN
????? RAISE A;
EXCEPTION
???????? WHEN A THEN
????????????????? DBMS_OUTPUT.put_line('EXCEPTION A!');
???????? WHEN OTHERS THEN
????????????? ROLLBACK;?
??????????????????? DBMS_OUTPUT.put_line('OTHERS EXCEPTION!');????
END;
--結果
--EXCEPTION A!

--EXCEPTION 001
SET SERVEROUTPUT ON
DECLARE
?????? A exception;
?????? B exception;
BEGIN??
???? RAISE B;
?????? BEGIN
????????????? RAISE A;
?????? EXCEPTION
??????????????? WHEN A THEN
???????????????????? DBMS_OUTPUT.put_line('IN EXCEPTION A!');
??????????????? WHEN B THEN
???????????????????? DBMS_OUTPUT.put_line('IN EXCEPTION B!');???????????????
?????? END;?
EXCEPTION
???????? WHEN A THEN
????????????????? DBMS_OUTPUT.put_line('OUT EXCEPTION A!');
???????? WHEN B THEN
????????????????? DBMS_OUTPUT.put_line('OUT EXCEPTION B!');??
???????? WHEN OTHERS THEN
???????? ROLLBACK;?
??????????????????? DBMS_OUTPUT.put_line('OTHERS EXCEPTION!');??
END;
--結果
--OUT EXCEPTION B!

--EXCEPTION 002
SET SERVEROUTPUT ON
DECLARE
?????? A exception;
?????? B exception;
BEGIN??
?????? BEGIN
????????????? RAISE A;
?????? EXCEPTION
??????????????? WHEN A THEN
???????????????????? DBMS_OUTPUT.put_line('IN EXCEPTION A!');
??????????????? WHEN B THEN
???????????????????? DBMS_OUTPUT.put_line('IN EXCEPTION B!');???????????????
?????? END;
??? RAISE B;
EXCEPTION
???????? WHEN A THEN
????????????????? DBMS_OUTPUT.put_line('OUT EXCEPTION A!');
???????? WHEN B THEN
????????????????? DBMS_OUTPUT.put_line('OUT EXCEPTION B!');
???????? WHEN OTHERS THEN
???????? ROLLBACK;?
??????????????????? DBMS_OUTPUT.put_line('OTHERS EXCEPTION!');?????
END;
--結果
--IN EXCEPTION A!
--OUT EXCEPTION B!

--EXCEPTION 003
SET SERVEROUTPUT ON
DECLARE
?????? A exception;
?????? B exception;
BEGIN??
?????? BEGIN
????????????? RAISE A;
?????? EXCEPTION
??????????????? WHEN B THEN
???????????????????? DBMS_OUTPUT.put_line('IN EXCEPTION B!');???????????????
?????? END;
??? RAISE B;
EXCEPTION
???????? WHEN A THEN
????????????????? DBMS_OUTPUT.put_line('OUT EXCEPTION A!');
???????? WHEN B THEN
????????????????? DBMS_OUTPUT.put_line('OUT EXCEPTION B!');?
???????? WHEN OTHERS THEN
???????? ROLLBACK;?
??????????????????? DBMS_OUTPUT.put_line('OTHERS EXCEPTION!');????
END;
--結果
--OUT EXCEPTION A!

--EXCEPTION 004
SET SERVEROUTPUT ON
DECLARE
?????? A exception;
?????? B exception;
?????? C exception;
BEGIN?
?? RAISE C;
?????? BEGIN
????????????? RAISE A;
?????? EXCEPTION
??????????????? WHEN B THEN
???????????????????? DBMS_OUTPUT.put_line('IN EXCEPTION B!');???????????????
?????? END;
??? RAISE B;
EXCEPTION
???????? WHEN A THEN
????????????????? DBMS_OUTPUT.put_line('OUT EXCEPTION A!');
???????? WHEN B THEN
????????????????? DBMS_OUTPUT.put_line('OUT EXCEPTION B!');?
???????? WHEN OTHERS THEN
???????? ROLLBACK;?
??????????????????? DBMS_OUTPUT.put_line('OTHERS EXCEPTION!');????
END;
--結果
--OTHERS EXCEPTION!

--EXCEPTION 005
SET SERVEROUTPUT ON
DECLARE
?????? A exception;
?????? B exception;
?????? C exception;
BEGIN?
?????? BEGIN
????????????? RAISE A;
?????? EXCEPTION
??????????????? WHEN A THEN
????????????????? RAISE C;
??????????????? WHEN B THEN
???????????????????? DBMS_OUTPUT.put_line('IN EXCEPTION B!');???????????????
?????? END;
??? RAISE B;
EXCEPTION
???????? WHEN A THEN
????????????????? DBMS_OUTPUT.put_line('OUT EXCEPTION B!');
???????? WHEN B THEN
????????????????? DBMS_OUTPUT.put_line('OUT EXCEPTION B!');?
???????? WHEN OTHERS THEN
???????? ROLLBACK;?

??????????????????? DBMS_OUTPUT.put_line('OTHERS EXCEPTION!');????
END;
--結果：
--OTHERS EXCEPTION!