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oracle Function


5.µ÷Óú¯ÊýFN_ADDONE
--------------------
SQL> SET SERVEROUTPUT ON
SQL> DECLARE CNUM NUMBER;
  2  BEGIN
  3     CNUM := USER1_ADB.FN_ADDONE(3);
  4     DBMS_OUTPUT.PUT_LINE('CNUM = ' || CNUM);
  5  END;
  6  /
CNUM = 4
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6.ɾ³ýº¯ÊýFN_ADDONE
--------------------
SQL> DROP FUNCTION USER1_ADB.FN_ADDONE;


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RAC:È«³ÆÊÇReal Application Cluster¡£RAC²¢·ÇÊǸöм¼Êõ£¬ÆäǰÉí½ÐOPS(Oracle Parallel Server)£¬´Ó9i¿ªÊ¼²Å¸ÄÃû½ÐRAC,oracle Data GuardÔÚ9i֮ǰ½Ð×öStandby
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oracle systemÃÜÂëÍü¼Ç½â¾ö

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2.ÔÚÖÕ¶Ë´°¿ÚÊäÈë sqlplus /nolog
   [oracle@hylinux ~]$ sqlplus /nolog
    SQL*Plus: Release 10.2.0.1.0 - Production on ÐÇÆÚ¶þ 7ÔÂ 29  14:26:16 2008
    Copyright (c) 1982, 2005, Oracle.  All rights reserved.
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select column_name from all_cons_columns cc
where owner='SSH'  --SSHΪÓû§Ãû³Æ£¬Òª×¢Òâ´óСд
and table_name='SYS_DEPT' --SYS_DEPTΪ±íÃû£¬×¢Òâ´óСд
and exists (select 'x' from all_constraints c
where c.owner = cc.owner
and c.constraint_name = cc.constraint_name
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select ... from tablename start with Ìõ¼þ1
connect by Ìõ¼þ2
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start with org_id = 'HBHqfWGWPy'
connect by prior org_id = parent_id;
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