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

oracle ÐòÁÐ

ÐòÁУ¨SEQUENCE£©ÐòÁÐÊÇÒ»Êý¾Ý¿â¶ÔÏó£¬ÀûÓÃËü¿ÉÉú³ÉΨһµÄÕûÊý¡£Ò»¸öÐòÁеÄÖµÊÇÓÉÌØÊâµÄOracle³ÌÐò×Ô¶¯Éú³É£¬Òò´ËÐòÁбÜÃâÁËÔÚÓ¦Óà ²ãʵÏÖÐòÁжøÒýÆðµÄÐÔÄÜÆ¿¾±¡£¸ÃÐòÁÐΪÉÏÉýÐòÁУ¬ÓÉ1¿ªÊ¼£¬ÔöÁ¿Îª1£¬Ã»ÓÐÉÏÏÞ¡£ÔÚÉýÐòʱ£¬ÐòÁпɴӱÈ×îСֵ´óµÄÖµ¿ªÊ¼£¬È±Ê¡ÖµÎªÐòÁеÄ×îСֵ¡£¶ÔÓÚ½µ Ðò£¬ÐòÁпÉÓɱÈ×î´óֵСµÄÖµ¿ªÊ¼£¬È±Ê¡ÖµÎªÐòÁеÄ×î´óÖµ¡£ÐÞ¸ÄÐòÁпÉÒÔ£º? ÐÞ¸ÄδÀ´ÐòÁÐÖµµÄÔöÁ¿¡£
ORACLEûÓÐÏóSQL SERVERÖÐÒ»ÑùµÄ×ÔÔö¼Ó×ֶΣ¬ÒªÊµÏÖÖ»ÄÜͨ¹ýSEQUENCEÀ´ÊµÏÖ
1.´´½¨ÐòÁУº
create sequence your_seq
nocycle
maxvalue 9999999999
start with 1;
2.ʹÓô¥·¢Æ÷ʵÏÖ×ÔÔö£º
create or replace trigger your_seq_tri
before insert on your_table1 for each row
declare
  next_id number;
begin
  select your_seq.nextval into next_id from dual;
  :new.id := next_id;
end;
ÔÚoraclekÖУ¬ÎªÁË·½±ãÎÒ³£³£Óô¥·¢Æ÷¼°ÐòÁнáºÏÆðÀ´ÊµÏÖ£¬ÏÂÃæ¾ÍÊÇÒ»¸öʾÀý¡£
ÏȽ¨±í¡¢ÔÙ½¨ÐòÁС¢È»ºóÊÇ´¥·¢Æ÷£¬×îºó²âÊÔ=============================================
--ΪÖ÷¼üÖ¸¶¨ÐòÁбàºÅ
--2003-10-8 15:53
=============================================
conn scott/tiger@powermis
drop table foo;
create table foo(
  id number primary key,
  data varchar2(100));
create sequence foo_seq;
create or replace trigger bifer_foo_id_pk
  before insert
    on foo
    for each row
begin
  select foo_seq.nextval into :new.id from dual;
end;
/
insert into foo(data)
  values('Chirstopher');
insert into foo(id,data)
  values(5,'Sean');
select * from foo;
Oracle8iÒýÈëÁËSYS_GUIDÕâ¸ö¸ÅÄËüͬOracle¹ÜÀíÔ±ËùʹÓõĴ«Í³µÄÐòÁУ¨sequence£©Ïà±È¾ßÓÐÖî¶àÓÅÊÆ¡£Ò»¸öÐòÁÐÉú³ÉÆ÷Ö»ÊǼòµ¥µØ´´½¨´Ó¸ø¶¨µÄÆðµã¿ªÊ¼µÄһϵÁÐÕûÊýÖµ£¬¶øÇÒËü±»ÓÃÔÚÑ¡Ôñ³ÂÊöʽµÄʱºò×Ô¶¯µØµÝÔö¸ÃϵÁС£
ÐòÁÐÉú³ÉÆ÷ËùÉú³ÉµÄÊý×ÖÖ»Äܱ£Ö¤ÔÚµ¥¸öʵÀýÀïÊÇΨһµÄ£¬Õâ¾Í²»ÊʺϽ«ËüÓÃ×÷²¢ÐлòÕßÔ¶³Ì»·¾³ÀïµÄÖ÷¹Ø¼ü
×Ö£¬ÒòΪ¸÷×Ô»·¾³ÀïµÄÐòÁпÉÄÜ»áÉú³ÉÏàͬµÄÊý×Ö£¬´Ó¶øµ¼Ö³åÍ»µÄ·¢Éú¡£SYS_GUID»á±£Ö¤Ëü´´½¨µÄ±êʶ·ûÔÚ
ÿ¸öÊý¾Ý¿âÀï¶¼ÊÇΨһµÄ¡£
´ËÍ⣬ÐòÁбØÐëÊÇDML³ÂÊöʽµÄÒ»²¿·Ö£¬Òò´ËËüÐèÒªÒ»¸öµ½Êý¾Ý¿âµÄÍù·µ¹ý³Ì£¨·ñÔòËü¾Í


Ïà¹ØÎĵµ£º

ORACLE±¸·Ý²ßÂÔ(ORACLE BACKUP STRATEGY)

ORACLE±¸·Ý²ßÂÔ(ORACLE BACKUP STRATEGY)
2007Äê11ÔÂ02ÈÕ ÐÇÆÚÎå 16:03
¸ÅÒª
1¡¢Á˽âʲôÊDZ¸·Ý
2¡¢Á˽ⱸ·ÝµÄÖØÒªÐÔ
3¡¢Àí½âÊý¾Ý¿âµÄÁ½ÖÖÔËÐз½Ê½
4¡¢Àí½â²»Í¬µÄ±¸·Ý·½Ê½¼°ÆäÇø±ð
5¡¢Á˽âÕýÈ·µÄ±¸·Ý²ßÂÔ¼°ÆäºÃ´¦
  
Ò»¡¢Á˽ⱸ·ÝµÄÖØÒªÐÔ
¿ÉÒÔ˵£¬´Ó¼ÆËã»úϵͳ³öÊÀµÄÄÇÌìÆð£¬¾ÍÓÐÁ˱¸·ÝÕâ¸ö¸ÅÄ ......

oracleÊ÷Ðνṹ²éѯ

select dm_id, father_id, dm_name from gy_dmcode t
where level  <= 2    --²ã¼¶
start with t.dm_id = '0' --¸ù½Úµã
connect by prior t.dm_id = t.father_id;  --¶¨Òå¹ØÏµ£¬prior ±íʾÓÅÏȼ¶ ......

oracle ÒÆ¶¯¸ßˮλ£º

²é¿´±íµÄ´óС£»
select a.blocks,a.bytes,a.bytes/1024/1024 from user_segments a
where a.segment_name='B_M_DZYH_CUST_SIGN_FACT';
Ê×ÏÈ
create table TEST_1228 as select * from user_tables;
insert into TEST_1228  select * from TEST_1228 ;
insert into TEST_1228  select * from TEST_1228 ;
i ......

OracleÓû§È¨ÏÞ¿ØÖÆ

1£©¡¢¹¹ÔìʵÀý£º
ÎÒÃÇÒѾ­´´½¨ºÃÊý¾Ý¿âÓû§test_user£¬Ï±ߴæÔÚtest_table±íºÍtest_procedure´æ´¢¹ý³Ì¡£ÎÒÃÇÒѾ­´´½¨ºÃÒ»¸ö¿ÕµÄ´úÀíÊý¾Ý¿âÓû§agent_user¡£
2£©¡¢µÇ¼test_userÓû§£¬½«test_userϱíµÄselectȨÏ޺ʹ洢¹ý³ÌµÄexcuteȨÏÞ¸³¸ø´úÀíÓû§agent_user¡£
SQL>GRANT select ON test_table TO agent_user;
SQL ......

OracleËÀËø

OracleËÀËø
1¡¢Ê²Ã´ÊÇËÀËø
¡¡¡¡ËÀËøÊÇÖ¸ÔÚÒ»×é½ø³ÌÖеĸ÷¸ö½ø³Ì¾ùÕ¼Óв»»áÊͷŵÄ×ÊÔ´£¬µ«Òò»¥ÏàÉêÇë±»ÆäËû½ø³ÌËùÕ¾Óò»»áÊͷŵÄ×ÊÔ´¶ø´¦ÓÚµÄÒ»ÖÖÓÀ¾ÃµÈ´ý״̬¡£ËÀËø²úÉúÓÐËĸö±ØÒªµÄÌõ¼þ£º»¥³âÌõ¼þ£¬²»¿É°þ¶áÌõ¼þ£¬²¿·Ö·ÖÅ䣬ѭ»·µÈ´ý£¬ÕâËĸöÌõ¼þ²»Êdzä·ÖÌõ¼þ£¬¼´Ê¹ÕâËĸöÌõ¼þͬʱ´æÔÚ£¬ÏµÍ³Ò²²»Ò»¶¨·¢ÉúËÀËø£¬µ«ÏµÍ³Ò»µ ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ