Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

OracleµÝ¹éº¯Êý

CREATE OR REPLACE VIEW ADMIN.TYPETREEVIEW
(ID, ITEMNO, ITEMNOSUB, GROUPID, MEMO,
TREE)
AS
/* 2007/01/23 16:51 XieShaoHua µÝ¹é²éѯ */
SELECT     typetree.ID, typetree.itemno, typetree.itemnosub, typetree.groupid,
           typetree.memo,
           RPAD ('¡¡', LEVEL * 3 - 2, '¡¡') || '©À' || typetree.memo AS tree
      from typetree
START WITH itemnosub = '0'
CONNECT BY PRIOR typetree.itemno = typetree.itemnosub;


Ïà¹ØÎĵµ£º

Oracle³£ÓÃɵ¹ÏÎÊÌâ1000ÎÊ


   
´ó¼ÒÔÚÓ¦ÓÃORACLEµÄʱºò¿ÉÄÜ»áÓöµ½ºÜ¶à¿´ÆðÀ´²»ÄѵÄÎÊÌâ, ÌØ±ð¶ÔÐÂÊÖÀ´Ëµ, ½ñÌìÎÒ¼òµ¥°ÑËü×ܽáÒ»ÏÂ, ·¢²¼¸ø´ó¼Ò, Ï£Íû¶Ô´ó¼ÒÓаïÖú! ºÍ´ó¼ÒÒ»Æð̽ÌÖ, ¹²Í¬½ø²½!
¶ÔORACLE¸ßÊÖÀ´ËµÊDz»Óÿ´µÄ.
1. Oracle°²×°Íê³ÉºóµÄ³õʼ¿ÚÁî?
¡¡internal/oracle
¡¡¡¡sys/change_on_install
¡¡¡¡system/manager ......

OracleÈÕ³£Î¬»¤µãµÎ

OracleάÈÕ³£»¤µãµÎ
    ËäÈ»Oracleά»¤²»ÊÇÎÒµÄÖ°Ô𣬵«Æ½Ê±»¹ÊÇÄÑÃâÒª¸úËü´ò½»µÀ£¬Òò´Ë¶ÔÓÚOracleµÄÈÕ³£Î¬»¤ÂÔÖªÒ»¶þ»¹ÊǺÜÓкô¦µÄ¡£
 1. µÇ¼£º
  £¨1£©²ÉÓÃϵͳ¹ÜÀíÔ±Óû§µÇ¼£º
#su - oracle
$ sqlplus / as sysdba
  £¨2£©²ÉÓÃÒ»°ãÓû§µÇ¼£¬¼ÙÉèÓû§ÃûΪoracle£¬ÃÜÂëΪpasswor ......

Oracle 10g ÕýÔò±í´ïʽ


ORACLEÖÕÓÚÔÚ10GÖÐÌṩÁ˶ÔÕýÔò±í´ïʽµÄÖ§³Ö£¬ÒÔǰÄÇЩÐèҪͨ¹ýLIKEÀ´½øÐеĸ´Ôӵį¥Åä¾Í¿ÉÒÔͨ¹ýʹÓÃÕýÔò±í´ïʽ¸ü¼òµ¥µÄʵÏÖ¡£
Oracle 10gÕýÔò±í´ïʽÌá¸ßÁËSQLÁé»îÐÔ¡£ÓÐЧµÄ½â¾öÁËÊý¾ÝÓÐЧÐÔ£¬ Öظ´´ÊµÄ±æÈÏ, Î޹صĿհ׼ì²â£¬»òÕß·Ö½â¶à¸öÕýÔò×é³ÉµÄ×Ö·û´®µÈÎÊÌâ¡£
Oracle 10gÖ§³ÖÕýÔò±í´ïʽµÄË ......

110¸öOracle º¯Êý

 1. ASCII
·µ»ØÓëÖ¸¶¨µÄ×Ö·û¶ÔÓ¦µÄÊ®½øÖÆÊý;
SQL> select ascii(A) A,ascii(a) a,ascii(0) zero,ascii( ) space from dual;
A A ZERO SPACE
--------- --------- --------- ---------
65 97 48 32
2. CHR
¸ø³öÕûÊý,·µ»Ø¶ÔÓ¦µÄ×Ö·û;
SQL> select chr(54740) zhao,chr(65) chr65 from dual;
ZH ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ