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

ÔÚOracleÖеÄÊ÷ÐβÙ×÷

ÔÚOracleÖеÄÊ÷ÐβÙ×÷
1.È¡×ӽڵ㼰·¾¶(ÕýÊ÷):
select t.id ,t.code, t.name ,t.pid
,SYS_CONNECT_BY_PATH(t.id,'.')||'.' as IdPath
from tas_catalog t
--where id!=110
start with id=110
connect by  pid = prior id
order siblings  by id
2.È¡¸÷¼¶¸¸½Úµã(µ¹Ê÷)£º
select t.id ,t.code, t.name ,t.pid
,SYS_CONNECT_BY_PATH(t.id,'.')||'.' as IdPath --·¾¶´Ó·´µÄ
from tas_catalog t
--where id!=110
start with id=110
connect by  id = prior pid
order siblings  by id
ÎÞÂÛÕýÊ÷»¹Êǵ¹Ê÷, ¹Ø¼ü¾ÍÔÚÓÚconnect byµÄÌõ¼þ.
ÕýÊ÷:   ±ØÐëÊÇ   ‘¸¸’= prior ‘×Ó’
µ¹Ê÷:   ±ØÐëÊÇ   ‘×Ó’= prior ‘¸¸’


Ïà¹ØÎĵµ£º

ORACLEÊý¾Ý¿â²åÈëÐÔÄܲâÊÔ

ORACLEÊý¾Ý¿â²åÈëÐÔÄܲâÊÔ
 
MKing
2010-3-8
 
²âÊÔ»·¾³»ù±¾ÐÅÏ¢£º
OS£ºWindows XP sp3
DB£ºOracle 9.2.0.1 δÆôÓù鵵
DBÖØ×öÈÕÖ¾Îļþ´óС£º100MB
Ó²ÅÌÐͺţºSAMSUNG HD161GJ£¨SATA-300,160G,7200rpm,8M cache£©
CPU£ºIntel Core2 E8400£¨3.0G£©
Äڴ棺2G
 
ͨ¹ýHD TuneµÃµ½µÄÓ²ÅÌ»ù±¾²âÊÔÐÅÏ ......

´óÐÍORACLEÊý¾Ý¿âÓÅ»¯Éè¼Æ·½°¸

±¾ÎÄÖ÷Òª´Ó´óÐÍÊý¾Ý¿âORACLE»·¾³Ëĸö²»Í¬¼¶±ðµÄµ÷Õû·ÖÎöÈëÊÖ£¬·ÖÎöORACLEµÄϵͳ½á¹¹ºÍ¹¤×÷»úÀí£¬´Ó¾Å¸ö²»Í¬·½Ãæ½ÏÈ«ÃæµØ×ܽáÁËORACLEÊý¾Ý¿âµÄÓÅ»¯µ÷Õû·½°¸¡£
    ¹Ø¼ü´Ê ORACLEÊý¾Ý¿â»·¾³µ÷ÕûÓÅ»¯Éè¼Æ·½°¸
    ¶ÔÓÚORACLEÊý¾Ý¿âµÄÊý¾Ý´æÈ¡£¬Ö÷ÒªÓÐËĸö²»Í¬µÄµ÷Õû¼¶±ð£¬µÚÒ»¼¶µ÷ÕûÊDzÙ×÷ÏµÍ ......

±±´óÇàÄñoracleѧϰ±Ê¼Ç13

ǶÌ×±í£º
Óë¿É±äÊý×éÀàËÆ£¬²»Í¬Ö®´¦ÊÇǶÌ×±íûÓÐÊý¾ÝÉÏÏÞ¡£
Óï·¨£º
´´½¨»ùÀàÐÍ
create or replace type ǶÌ×±í»ùÀàÐÍÃû as object(×ֶβÎÊý);
create or replace type mingxitype as object(
goodsid varchar(15),
incount int,
providerid varchar(10)
)not final;
´´½¨Ç¶Ì×±íÀàÐÍ
create or replace type Ç ......

killtest ·ÖÏí×îеÄoracle 1z0 047Ìâ¿â×ÊÁÏÏÂÔØ

1z0-047 ×ÊÁϵÄ×îзÖÏí£¬ÏÂÃæһЩÌâÄ¿ÊÇ´Ó×îеÄÌâ¿âÖо«ÐÄÕûÀí³öÀ´µÄ£¬ÖÊÁ¿ºÜ¸ß£¬ÐèÒªµÄÅóÓÑ¿´¹ýÀ´µÄ°¡¡£
1. Which statements are true? (Choose all that apply.)
A. The data dictionary is created and maintained by the database administrator.
B. The data dictionary views can consist of joins of dictiona ......

ÔÚOracleÖÐʹÓÃGuid

ÔÚOracleÖÐʹÓÃGuid
ÔÚOracleÖпÉÒÔÓÃSYS_GUID()À´Éú³ÉÒ»¸öguid,Ï൱ÓÚmsSqlÖеÄnewid()¡£
ÔÚOracle9iºÍOracle 10g ÀïSYS_GUID²úÉúµÃµ½µÄÊý¾ÝÊÇ32 λµÄ£¬È磺234E45F0077881AAE0430AA3034681AA
µ«OracleÖеÄguidÓëmsSqlÖеÄguid¸ñʽ²»ÍêÈ«Ïàͬ¡£
½«OracleÖеÄguid·Ö¸î³ÉΪ Windowsϵͳ ObjectId µÄ¸ñʽ£º{8-4-4-4-12} £ ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØͼ | ¸ÓICP±¸09004571ºÅ