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OracleÖÐÅúÁ¿µ¼³öSequence

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Java´úÂë
select 
'create sequence '
||sequence_name||
  
       
' minvalue '
||min_value||   
       
' maxvalue '
||max_value||   
       
' start with '
||last_number||   
       
' increment by '
||increment_by||   
       (
case
 when cache_size=
0
 then 
' nocache'
 
else
 
' cache '
||cache_size end) ||
';'
  
from dba_sequences where sequence_owner=
'HR'
  
select 'create sequence '||sequence_name||
' minvalue '||min_value||
' maxvalue '||max_value||
' start with '||last_number||
' increment by '||increment_by||
(case when cache_size=0 then ' nocache' else ' cache '||cache_size end) ||';'
from dba_sequences where sequence_owner='HR'
×¢Ò⣺ÆäÖеÄHR£¬ÊÇÐèÒªµ¼³ösequenceµÄÓû§£¬Ã²ËƱØÐë´óдµÄ˵£¡²¢ÇÒʹÓøýű¾µÄÓû§ÐèÒªÓзÃÎÊdba_sequencesµÄȨÏÞ¡£
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Java´úÂë
create sequence HIBERNATE_SEQUENCE minvalue 
1
 maxvalue 
999999999999999999999999999
 start with 
1
 increment by 
1
 cache 
20
;
  
create sequence MIAGENTVERSION_VERSION_SEQ minvalue 
1
 maxvalue 
999999999999999999999999
 start with 
121
 increment by 
1
 cache 
20
;&nbs


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Oracle 10G Êý¾Ý¿âÎļþĿ¼½á¹¹

Oracle 10G Êý¾Ý¿âÎļþĿ¼½á¹¹ 
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1.Oracle_BaseĿ¼
Oracle_Base´ú±íOracleĿ¼Ê÷µÄ¸ù¡£ ......

SQLÓÅ»¯¹ý³ÌÖг£¼ûOracle HINTµÄÓ÷¨

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1. /*+ALL_ROWS*/
±íÃ÷¶ÔÓï¾ä¿éÑ¡Ôñ»ùÓÚ¿ªÏúµÄÓÅ»¯·½·¨,²¢»ñµÃ×î¼ÑÍÌÍÂÁ¿,ʹ×ÊÔ´ÏûºÄ×îС»¯.
ÀýÈç:
SELECT /*+ALL+_ROWS*/ EMP_NO,EMP_NAM,DAT_IN from BSEMPMS WHERE EMP_NO='SCOTT';
2. /*+FIRST_ROWS*/
±í ......

±±¾©ÒÚÑôÐÅͨOracle±ÊÊÔÌâ

 
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¡¡¡¡1.µ±ÄãÖ´ÐÐÒÔϲéѯÓï¾ä:
¡¡¡¡SELECT empno,ename
¡¡¡¡from emp
¡¡¡¡WHERE empno =7782 OR empno =7876;
¡¡¡¡ÔÚWHEREÓï¾äÖУ¬ÒÔÏÂÄĸö²Ù×÷·û¿ÉÒÔÈ¡´úOR£¿
¡¡¡¡A. IN
¡¡¡¡B. BETWEEN ……
¡¡¡¡C. LIKE
¡¡¡¡D. <=
¡¡¡¡E. >=
¡¡¡¡
¡¡¡¡2. ÄĸöʵÏÖ  ......

oracle±Ê¼Ç

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SQL ÓïÑÔ·ÖÀࣺ
1  DDL£¨Êý¾Ý¶¨Òå £©ÓÃÓÚ´´½¨ºÍ¶¨ÒåÊý¾Ý¿â¶ÔÏ󣬲¢ÇÒ½«¶ÔÕâЩ¶ÔÏóµÄ¶¨Òå±£´æÔÚÊý¾Ý×ÖµäÖС£
creat  table     ´´½¨±í
alter  table     ÐÞ¸ ......
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