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create or replace procedure ´æ´¢¹ý³ÌÃû£¨param1 in type£¬param2 out type£© 
as
±äÁ¿1 ÀàÐÍ£¨Öµ·¶Î§£©;
±äÁ¿2 ÀàÐÍ£¨Öµ·¶Î§£©;
Begin
    Select count(*) into ±äÁ¿1 from ±íA whereÁÐÃû=param1£»
    If (ÅжÏÌõ¼þ) then
       Select ÁÐÃû into ±äÁ¿2 from ±íA whereÁÐÃû=param1£»
       Dbms_output¡£Put_line(‘´òÓ¡ÐÅÏ¢’);
    Elsif (ÅжÏÌõ¼þ) then
       Dbms_output¡£Put_line(‘´òÓ¡ÐÅÏ¢’);
    Else
       Raise Òì³£Ãû£¨NO_DATA_FOUND£©;
    End if;
Exception
    When others then
       Rollback;
End;
 
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2£¬  ±äÁ¿´øÈ¡Öµ·¶Î§£¬ºóÃæ½Ó·ÖºÅ
3£¬  ÔÚÅжÏÓï¾äÇ°×îºÃÏÈÓÃcount£¨*£©º¯ÊýÅжÏÊÇ·ñ´æÔÚ¸ÃÌõ²Ù×÷¼Ç¼
4£¬  ÓÃselect ¡£¡£¡£into¡£¡£¡£¸ø±äÁ¿¸³Öµ
5£¬  ÔÚ´úÂëÖÐÅ×Òì³£Óà raise+Òì³£Ãû
 
 
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ACCESS_INTO_NULL                  Î´¶¨Òå¶ÔÏó
CASE_NOT_FOUND                    CASE ÖÐÈôδ°üº¬ÏàÓ¦µÄ WHEN £¬²¢ÇÒûÓÐÉèÖÃ
ELSE ʱ
COLLECTION_IS_NULL               ¼¯ºÏÔªËØδ³õʼ»¯
CURSER_ALREADY_OPEN            ÓαêÒѾ­´ò¿ª
DUP_VAL_ON_INDEX                  ΨһË÷Òý¶ÔÓ¦µÄÁÐÉÏÓÐÖظ´µÄÖµ
INVALID_CURSOR  


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CREATE OR REPLACE PACKAGE types
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    TYPE ref_cursor IS REF CURSOR;
END;
/
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    RIC VARCHAR(6) PRIMARY KEY,
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