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

ORACLE ·Ö×é ÅÅÐò³öÇ°Ãæ×î´óµÄNÐÐ

select  custid,carid,Cunote,INVNO,BUYPLAN  
from ( select custid,carid,Cunote,INVNO,BUYPLAN,
row_number() over(partition by custid,carid order by Feedbackid desc) rn
  from pvE3S.T_VCTM_CUSTOMER_FEEDBACK) t1 where rn=1
°´Feedbackid ÅÅÐò,rnÊÇǰNÐÐ


Ïà¹ØÎĵµ£º

RHEL5ÏÂOracle 10gÍêÕû°²×°ËµÃ÷£¬²»ÐŰ²²»³É¹¦£¡

1.×¼±¸¹¤×÷£º
°²×°32λ»ò64λRHEL5.4£¬°²×°Ïòµ¼Öв»ÐèҪѡÈκÎ×é¼þ£¬²»ÐèÒªÔ¤ÅäÖÃÈκÎÓû§£¬IPÊÇDHCP»ò¾²Ì¬½Ô¿É¡£
°²×°ºóÅäÖöîÍâ×é¼þ£º
yum -y install libXp,make,binutils,gcc,kernel-headers,glibc-headers,glibc-devel,libgomp
ÔÚx86_64ÉÏ»¹ÐèÒªcompat-libstdc++-33.x86_64
¶Ôx86£¬ÉÏ´«²¢½âѹ10201_database_lin ......

OracleÌṩµÄÐòºÅº¯Êý

OracleÌṩµÄÐòºÅº¯Êý:
ÒÔemp±íΪÀý:
1: rownum ×î¼òµ¥µÄÐòºÅ µ«ÊÇÔÚorder by֮ǰ¾ÍÈ·¶¨Öµ.
select rownum,t.* from emp t order by ename
  ÐÐÊý
ROWNUM
EMPNO
ENAME
JOB
MGR
HIREDATE
SAL
COMM
DEPTNO
1
11
7876
ADAMS
CLERK
7788
1987-5-23
1100
¡¡
20
2
2
7499
ALLEN
SALESMAN
7698 ......

OracleȡǰNλSQL

      Ò²Ðí¶ÔSQL ServerÀ´Ëµ,ȡǰNλµÄÊý¾ÝÊǺܼòµ¥µÄÊÂÇé,Ò»ÌõTOPÓï¾ä¾Í¸ã¶¨ÁË.
      ÔÚOracleÖÐÎÒÃÇÍùÍù»á¸Ð¾õµ½Í·ÌÛ,ƽÈÕÀïÒ²³£»áÓõ½,Ö÷ÒªÊÇʹÓÃpartition by.
Óï·¨ÈçÏÂ:
select emp_card_no,work_date,read_card_date,count(rownum) as cnt
from hra_read_car ......

OracleÊý¾Ýµ¼Èëµ¼³öimp/exp

¹¦ÄÜ£ºOracleÊý¾Ýµ¼Èëµ¼³öimp/exp¾ÍÏ൱ÓëoracleÊý¾Ý»¹Ô­Ó뱸·Ý¡£´ó¶àÇé¿ö¶¼¿ÉÒÔÓÃOracleÊý¾Ýµ¼Èëµ¼³öÍê³ÉÊý¾ÝµÄ±¸·ÝºÍ»¹Ô­£¨²»»áÔì³ÉÊý¾ÝµÄ¶ªÊ§£©¡£
¡¡¡¡OracleÓиöºÃ´¦£¬ËäÈ»ÄãµÄµçÄÔ²»ÊÇ·þÎñÆ÷£¬µ«ÊÇÄã×°ÁËoracle¿Í»§¶Ë£¬²¢½¨Á¢ÁËÁ¬½Ó £¨Í¨¹ýnet8 assistantÖб¾µØ——>·þÎñÃüÃû Ìí¼ÓÕýÈ·µÄ·þÎñÃüÃû
¡¡¡¡Æ ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ