ÔÚOracleÖÐÉèÖÃ×Ô¶¯Ôö³¤ÁÐ
¡¾ÊµÏÖ²½Öè¡¿
1. ´´½¨±íblog_info, ¾ßÓÐIDºÍtitleÁ½¸ö×Ö¶Î, ÆäÖÐID½«ÉèÖÃΪ×Ô¶¯Ôö³¤ÁÐ;
2. ´´½¨ÐòÁÐ:
create sequence sq_blog_info
start with 1
increment by 1
nomaxvalue
nocycle
cache 10;
3. ´´½¨´¥·¢Æ÷:
create or replace trigger tg_blog_info
before insert on blog_info for each row
begin
select sq_blog_info.nextval into :NEW.id from dual; --¡ï×¢Òâ: ´Ë´¦µÄ;ÊDZØÐëµÄ
end;
4. ²âÊÔ:
insert into blog_info (title) values('a');
Ïà¹ØÎĵµ£º
OracleÖеÄÐòÁкŹËÃû˼Òå¾ÍÊÇ´´½¨Ò»¸öÐòÁкţ¬¿ÉÒÔÔÚ²åÈë»òÕ߸üеÄʱºòµ÷Óã¬Ï൱ÓÚÊÇÒ»¸öÉú³ÉÆ÷
´´½¨Óï·¨£º
create sequence myse
increment by 1 --Ôö³¤¶È
start with
1 --´ÓÄÄÀïÔö¼Ó£¬¾ÍÊÇ˵ÏÂÒ»¸ö»ñÈ¡µÄÖµ´ÓÕâ¸öÖµ ......
ORACLE 10G for RHEL AS 4 °²×°
ÑéÖ¤°²×°:¼ì²éORACLEËùÐèµÄ³ÌÐòÊÇ·ñ°²×°¾ùÒÑ°²×°(»ò¸ü¸ß°æ±¾)
compat-db-4.1.25-9.i386.rpm
compat-gcc-32-3.2.3-47.3.i386.rpm
compat-gcc-32-c++-3.2.3-47.3.i386.rpm
compat-libstdc++-33-3.2.3-47.3.i386.rpm
compat-oracle-rhel4-1.0-5.i386.rpm
gcc-3.4.3-9.EL4.i386.rpm
gli ......
ORACLE ·ÖÇø±í PARTITION table
http://blog.chinaunix.net/u/6889/showart_315897.html
1.1 ·ÖÇø±íPARTITION table
ÔÚORACLEÀïÈç¹ûÓöµ½Ìرð´óµÄ±í£¬¿ÉÒÔʹÓ÷ÖÇøµÄ±íÀ´¸Ä±äÆäÓ¦ÓóÌÐòµÄÐÔÄÜ¡£
1.1.1 ·ÖÇø±íµÄ½¨Á¢£º
ij¹«Ë¾µÄÿÄê²úÉú¾Þ´óµÄÏúÊۼǼ£¬DBAÏò¹«Ë¾½¨Òéÿ¼¾¶ÈµÄÊý¾Ý·ÅÔÚÒ»¸ö·ÖÇøÄÚ£¬ÒÔÏÂʾ·¶µÄÊǸù«Ë¾1 ......
--´´½¨¶ÔÏóÀàÐÍ
create or replace type emp_typ as object (
id number,
name varchar2(30),
sal number,
comm number,
member procedure change_comm(new_comm number),
member function get_info return varchar2
) ;
--´´½¨¶ÔÏóÀàÐ͹¹Ô캯Êý¶¨Òå
create or replace type body emp_typ is
member proce ......
ÃÀ¹úPVH DB´æÔÚÐÐÁ´½Ó.ͨ¹ýÎҵļì²é,·¢ÏÖ,ÎÒÃǵÄDBͬÑù´æÔÚÐÐǨÒƺÍÐÐÁ´½Ó.ORACLEµÄdbms_stats.gather_schema_statsÖ»»áÊÕ¼¯ÓÅ»¯Æ÷ͳ¼ÆÐÅÏ¢,²»»á¼ì²â±íµÄ¼Ç¼ÊÇ·ñ´æÔÚÐÐǨÒƺÍÐÐÁ´½Ó.(ÎÒÔÏȱ»Õâ¸ö°ü¸øÆÁË,ËùÒÔÖ´ÐÐÍêdbms_stats.gather_schema_statsºóÒ»²éÊý¾Ý×Öµä:USER_TABLES,ÆäÖеÄ×Ö¶Îchain_cntֵȫΪ0).Òª¼ì²â±íµÄ¼Ç ......