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

ÏòOracle²åÈëtimestampÀàÐÍ×Ö¶Î

 Èç¹ûÊÇÖÐÎÄ×Ö·û¼¯£º
[TEST@ora10gr1#2009-11-25/08:39:38]
SQL>create table t1(t timestamp);
Table created.
[TEST@ora10gr1#2009-11-25/08:39:56]
SQL>insert into t1 values(to_timestamp('21NOV09 10:04:12.032','DDMONYY HH24:MI:SS.FF'));
* ERROR at line 1: ORA-01843: not a valid month
Ó¦¸ÃÖ¸¶¨ÓÃamerican×Ö·û¼¯²åÈë¾Í¶ÔÁË£º
[TEST@ora10gr1#2009-11-25/08:39:56]
SQL>insert into t1 values(to_timestamp('21NOV09 10:04:12.032','DDMONYY HH24:MI:SS.FF','nls_date_language=american'));
1 row created.


Ïà¹ØÎĵµ£º

ORACLE ÄÚ´æ¹ÜÀí


Oracle 9i¶¯Ì¬SGA¹ÜÀí
ÔÚOracle 9iÖУ¬¿ÉÒÔÉèÖÃSGA_MAX_SIZE£¬¸Ã²ÎÊýÓÃÒÔ¿ØÖƸ÷»º³å³ØʹÓõÄÄÚ´æ×ܺͣ¬±¾ÖÊÉÏÊÇÔÚ½ø³ÌÖÐÔ¤ÏÈ·ÖÅäÒ»¶ÎÐéÄâµØÖ·±¸Óöø²»·ÖÅäÎïÀíÄڴ棬ĿµÄÊÇ·ÀÖ¹ºÍ½ø³Ç˽ÓеØÖ·¶ÎµÄ³åÍ»¡£
Ö»Òª×ܵÄSGAÄÚ´æÉèÖò»³¬¹ýSGA_MAX_SIZEµÄÉèÖ㬸ü¸Ä¶¼¿ÉÒÔÁ¢¼´ÉúЧ¡£ÐèҪעÒâµÄÊÇ£¬ÔÚOracle 9iR1ÖУ¬¶¯Ì¬¼õСÄÚ´ ......

SQL ServerºÍOracle³£Óú¯Êý¶Ô±È


Êýѧº¯Êý
1.¾ø¶ÔÖµ
S:select abs(-1) value
O:select abs(-1) value from dual
2.È¡Õû(´ó)
S:select ceiling(-1.001) value
O:select ceil(-1.001) value from dual
3.È¡Õû£¨Ð¡£©
S:select floor(-1.001) value
O:select floor(-1.001) value from dual
4.È¡Õû£¨½ØÈ¡£©
S:select cast(-1.002 as in ......

sqlÓï¾ä¹éÄÉ£¨oracle£©

¶ÔÈÕ³£¹¤×÷ÖÐÓõ½µÄ¸Ð¾õÓÐÓõÄsqlÓï¾ä×ö¸ö¹éÄÉ£¬ÓÃÓÚ½ñºóιÊ֪С£
*¸´ÖÆ±í£º
create table tablename  as  select * from table_src;
create table tablename  as  select * from table_src where 1 <> 1; --Ö»¸´ÖƱí½á¹¹ ......

oracleÊý¾ÝÀàÐÍnumber

OracleʹÓñê×¼¡¢¿É±ä³¤¶ÈµÄÄÚ²¿¸ñʽÀ´´æ´¢Êý×Ö¡£Õâ¸öÄÚ²¿¸ñʽ¾«¶È¿ÉÒԸߴï38λ¡£
    NUMBERÊý¾ÝÀàÐÍ¿ÉÒÔÓÐÁ½¸öÏÞ¶¨·û£¬È磺
    column NUMBER £¨ precision£¬ scale£©
    precision±íʾÊý×ÖÖеÄÓÐЧλ¡£Èç¹ûûÓÐÖ¸¶¨precisionµÄ»°£¬Oracle½«Ê¹ÓÃ38×÷Ϊ¾«¶È¡£
&nb ......

ORACLEÊý¾Ýµ¼Èëµ½Ö¸¶¨µÄ±í¿Õ¼ä

create user Óû§Ãû identified by ÃÜÂë default tablespace ȱʡ±í¿Õ¼ä¡¡Temporary tablespace ÁÙʱ±í¿Õ¼ä;­
­
grant connect,resource,dba to Óû§Ãû;­
¡¡¡¡­
revoke unlimited tablespace from Óû§Ãû;­
¡¡¡¡­
alter user Óû§Ãû quota 0 on Users;­
­
alter user Óû§Ãû¡¡quot ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØͼ | ¸ÓICP±¸09004571ºÅ