Ò׽ؽØͼÈí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

oracle´óÊý¾ÝÁ¿µ¼È루sqllaoder)

 ½ñÌì×öÁË1¸öÊý¾Ýµ¼ÈëÐèÇó£¬Îı¾¼Ç¼ÓÐ12Íò¶àÌõ£¬TXTÎļþ´óС6M¶à£¬ÒòΪÒÔÇ°¶¼ÊÇÓÃoracleµÄtext import·½Ê½µ¼È룬¸ÕÊÔÑéÁËһϣ¬²»ÁéÑ飬µ±µ¼Èëµ½2Íò¶àÌõµÄʱºò£¬PLSQL¾Íµ±µôÁË£¬×ß²»¶¯ÁË¡£
 ÒòΪ¿¼Âǵ½1´Îµ¼È룬ËùÓоö¶¨²ÉÓÃSQLLOADERµÄ·½Ê½¡£


Ïà¹ØÎĵµ£º

ORACLE²åÈëÈÕÆÚÊý¾Ý

 oracleÊý¾Ý¿â²åÈëÈÕÆÚÐÍÊý¾Ý
ÍùOracleÊý¾Ý¿âÖвåÈëÈÕÆÚÐÍÊý¾Ý£¨to_dateµÄÓ÷¨£©
½ñÌìÅöµ½ÁËÐèÒªÍùOracleÊý¾Ý¿âÖвåÈëÈÕÆÚÐÍÊý¾Ý£¬ÒªÊ¹ÓÃTO_DATEº¯Êý£¬ÔÚÍøÉÏ·¢ÏÖһƪдµÄ²»´íµÄÎÄÕ£¬ÕªÀ´Ò»Æð·ÖÏí¡£
INSERT  INTO  FLOOR  VALUES  ( to_date ( '2007-12-20 18:31:34' , 'YYYY-MM-DD HH24:M ......

ѧϰ¡¶Oracle 9i10g±à³ÌÒÕÊõ¡·µÄ±Ê¼Ç (Ò»)

1.λͼË÷Òý
×î½üÎÒ²ÎÓëÁËÒ»¸öÏîÄ¿¡£¿ª·¢ÈËÔ±Õý±¥ÊÜÐÔÄÜÎÊÌâÖ®¿à£¬¿´ÉÏÈ¥ËûÃǵÄϵͳÖÐÐí¶àÊÂÎñÔÚ´®ÐÐ
½øÐС£ËûÃǵÄ×ö·¨²»ÊÇ´ó¼Ò²¢·¢µØ¹¤×÷£¬¶øÊÇÿ¸öÈ˶¼ÒªÅÅÒ»¸ö³¤³¤µÄ¶Ó£¬¿à¿àµÈ×ÅÇ°ÃæµÄÈËÍê³Éºó²ÅÄÜ
¼ÌÐø¡£Ó¦Óüܹ¹Ê¦ÏòÎÒչʾÁËϵͳµÄÌåϵ½á¹¹£¬ÕâÊǾ­µäµÄÈý²ã·½·¨¡£ËûÃÇÏëÈÃWeb ä¯ÀÀÆ÷ÓëÒ»¸öÔËÐÐJSP
£¨JavaServer Pa ......

oracle ASM ÅäÖ㨰²×°dbʱ´´½¨Ñ¡Ôñasm£©

 
oracle ASM ÅäÖà ת
2008-04-30 11:14
oracle ASM ÅäÖÃ
2006Äê12ÔÂ11ÈÕ ÐÇÆÚÒ» 11:09
×Ô¶¯´æ´¢¹ÜÀí (ASM)

   ASM ÊÇ Oracle Êý¾Ý¿â 10g
ÖÐÒ»¸ö·Ç³£³öÉ«µÄÐÂÌØÐÔ£¬ËüÒÔƽ̨Î޹صķ½Ê½ÌṩÁËÎļþϵͳ¡¢Âß¼­¾í¹ÜÀíÆ÷ÒÔ¼°Èí¼þ RAID µÈ·þÎñ¡£ASM
¿ÉÒÔÌõ´ø»¯ºÍ¾µÏñ´ÅÅÌ£¬´Ó¶øʵÏÖÁËÔÚÊý¾Ý¿â±»¼ÓÔص ......

oracleÖÐdual±íµÄÓ÷¨

dualÊÇÒ»¸öÐéÄâ±í£¬ÓÃÀ´¹¹³ÉselectµÄÓï·¨¹æÔò£¬oracle±£Ö¤dualÀïÃæÓÀÔ¶Ö»ÓÐÒ»Ìõ¼Ç¼¡£ÎÒÃÇ¿ÉÒÔÓÃËüÀ´×öºÜ¶àÊÂÇ飬ÈçÏ£º
1¡¢²é¿´µ±Ç°Óû§£¬¿ÉÒÔÔÚ SQL PlusÖÐÖ´ÐÐÏÂÃæÓï¾ä select user from dual;
2¡¢ÓÃÀ´µ÷ÓÃϵͳº¯Êý
    select to_char(sysdate,'yyyy-mm-dd hh24:mi:ss') from dual;--»ñµÃµ±Ç°ÏµÍ³Ê±¼ ......

oracleÖеÄNVL,NVL2,NULLIF,COALESCE¼¸¸öͨÓú¯Êý

OracleÖк¯ÊýÒÔÇ°½éÉܵÄ×Ö·û´®´¦Àí£¬ÈÕÆÚº¯Êý£¬Êýѧº¯Êý,ÒÔ¼°×ª»»º¯ÊýµÈµÈ£¬»¹ÓÐÒ»ÀຯÊýÊÇͨÓú¯Êý¡£Ö÷ÒªÓУºNVL,NVL2,NULLIF,COALESCE£¬Õ⼸¸öº¯ÊýÓÃÔÚ¸÷¸öÀàÐÍÉ϶¼¿ÉÒÔ¡£
ÏÂÃæ¼òµ¥½éÉÜһϼ¸¸öº¯ÊýµÄÓ÷¨¡£
ÔÚ½éÉÜÕâ¸ö֮ǰÄã±ØÐëÃ÷°×ʲôÊÇoracleÖеĿÕÖµnull
1.NVLº¯Êý
NVLº¯ÊýµÄ¸ñʽÈçÏ£ºNVL(expr1,expr2)
º¬ÒåÊ ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØͼ | ¸ÓICP±¸09004571ºÅ