Ò׽ؽØÍ¼Èí¼þ¡¢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

Oracle±¨TNS 12518µÄ´íÎó

TNS-12518: TNS:listener could not hand off client connection
 TNS-12560: TNS:protocol adapter error
  TNS-00530: Protocol adapter error
   32-bit Windows Error: 2: No such file or directory
½â¾ö·½·¨£º
      ÒòΪÎÒʹÓõÄÊÇÐéÄâ»ú£¬ËùÒÔÔÚIPÉÏĬÈϵÄ×Ô¶¯· ......

ORACLE 10 ѧϰ±Ê¼ÇÃüÁî µÚÒ»¿Î¡£(¸¶Ê×ê¿)

ORACLE 10 ѧϰ±Ê¼ÇÃüÁîµÚÒ»¿Î¡£
1.
sqlplus /nolog
connect /as sysdba
alter user scott account unlock;
alter user scott identified by manager;
2.
grant  select on dept to nmerp;
revoke select on dept to nmerp;
select * from scott.dept
create table abc(a varchar2(10),b char(10));
alter& ......

oracle index type

Âß¼­ÉÏ£º
Single column µ¥ÐÐË÷Òý
Concatenated ¶àÐÐË÷Òý
Unique ΨһË÷Òý
NonUnique ·ÇΨһË÷Òý
Function-basedº¯ÊýË÷Òý
Domain ÓòË÷Òý
ÎïÀíÉÏ£º
Partitioned ·ÖÇøË÷Òý
NonPartitioned ·Ç·ÖÇøË÷Òý
B-tree£º
Normal Õý³£ÐÍBÊ÷
Rever Key ·´×ªÐÍBÊ÷
Bitmap λͼË÷Òý
Ë÷Òý½á¹¹£º
B-tree£º
ÊʺÏÓë´óÁ¿µÄÔö¡¢É ......

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 | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ