Oracle·ÖÒ³ÌÖÂÛ
oracle·ÖÒ³£¿£¿£¿
ÔÚmysqlÖÐÖ»Òªlimit x,y¾Í¿ÉÒÔ·ÖÒ³³É¹¦£¬ÄÇoracle ÖÐÊÇÔõô×öµÄÄØ£¿
=================================================
·½·¨Ò»£º
SELECT id,rown
from (SELECT id, ROWNUM rown
from (SELECT id
from table
WHERE (************)
ORDER BY ********)
WHERE ROWNUM <= ÿҳÌõÊý*Ò³ºÅ)
WHERE (rown BETWEEN ÿҳÌõÊý*Ò³ºÅ-£¨Ã¿Ò³ÌõÊý-1£© AND ÿҳÌõÊý*Ò³ºÅ)
¸ã²»¶¨ºÍÎÒÁªÏµ lhw@263.net
ÕâÑùÈ¡³öµÚ11-20Ìõ¼Ç¼!
select * from (
select rownum r,a from yourtable
where rownum <= 20
order by name )
where r > 10
=========================================================
[code=SQL]
select * from
(select rownum r , e.*
--¸ù¾ÝÌõ¼þ²éÕÒ³öËùÒªµÄ¼Ç¼
from
(select * from emp where Ìõ¼þ order by ×Ö¶Î ) e
)
where r between ÆðʼÐÐ and ½áÊøÐÐ
[/code]
======================================================
·½·¨Èý£º
a_ja£¨Çà²ØêóÅ££©»Ø¸´ÓÚ 2003-06-14 12:16:29 µÃ·Ö 0
select * from you_db_table where rownum
Ïà¹ØÎĵµ£º
¡¡ SQLÖеĵ¥¼Ç¼º¯Êý
1.ASCII
·µ»ØÓëÖ¸¶¨µÄ×Ö·û¶ÔÓ¦µÄÊ®½øÖÆÊý;
SQL> select ascii('A') A,ascii('a') a,ascii('0') zero,ascii(' ') space from dual;
A A ZERO   ......
¼¸¸ö¼òµ¥µÄ²½Öè´ó·ùÌá¸ßOracleÐÔÄÜ--ÎÒÓÅ»¯Êý¾Ý¿âµÄÈý°å¸«¡£
Êý¾Ý¿âÓÅ»¯µÄÌÖÂÛ¿ÉÒÔ˵ÊÇÒ»¸öÓÀºãµÄÖ÷Ìâ¡£×ÊÉîµÄOracleÓÅ»¯ÈËԱͨ³£»áÒªÇóÌá³öÐÔÄÜÎÊÌâµÄÈ˶ÔÊý¾Ý¿â×öÒ»¸östatspack£¬Ìù³öÊý¾Ý¿âÅäÖõȵȡ£»¹ÓеÄÈËÈÏΪҪץ³öÖ´ÐÐ×îÂýµÄÓï¾äÀ´½øÐÐÓÅ»¯¡£µ«Êµ¼ÊÇé¿öÊÇ£¬Ìá³öÒÉÎʵÄÈ˺ܿÉÄܸù±¾²»¶®Ö´Ðмƻ®£¬¸ü²»ÒªËµstatspac ......
1. ²éѯÊý¾Ý¿âÏÖÔڵıí¿Õ¼ä
select tablespace_name, file_name, sum(bytes)/1024/1024 table_size from dba_data_files group by tablespace_name,file_name;
2. ½¨Á¢±í¿Õ¼ä
CREATE TABLESPACE data01 DATAFILE '/oracle/oradata/db/DATA01.dbf' SIZE 500M;
3.ɾ³ý±í¿Õ¼ä
DROP TABLESPACE data01 INCLUDING C ......
oracleÖ´Ðмƻ®µÄһЩ¸ÅÄî(»ù´¡µÄ¼ÇÒä)
¿ªÊ¼Ñ§Ï°ORACLEÓï¾äÓÅ»¯,´ÓÖ´Ðмƻ®¿ªÊ¼,ÏÈÊìϤÕâЩÃû´ÊÒÔ¼°»ù±¾º¬Òå,¼ÇÒäÔÚÎÒÄÔ×ÓÀï,2010-04-10
Rowid£ºÏµÍ³¸øoracleÊý¾ÝµÄÿÐи½¼ÓµÄÒ»¸öαÁУ¬°üº¬Êý¾Ý±íÃû³Æ£¬Êý¾Ý¿âid£¬´æ´¢Êý¾Ý¿âidÒÔ¼°Ò»¸öÁ÷Ë®ºÅµÈÐÅÏ¢£¬rowidÔÚÐеÄÉúÃüÖÜÆÚÄÚΨһ¡£
Recursive sql£ºÎªÁËÖ´ÐÐÓû§Óï¾ ......
ÔÚ×öÏîÄ¿¾³£Óöµ½·Ö¿ÆÊÒ¡¢ÈËÔ±½øÐлã×ܵÄÎÊÌ⣬ÔÚORACLEÖжԴËÀàÎÊÌâµÄ´¦ÀíÏ൱·½±ã£¡ÏÂÃæÒÔÏîÄ¿ÖÐÓöµ½µÄʵÀý½øÐÐ˵Ã÷£º
²éѯÓï¾äÈçÏ£º
select f_sys_getsectnamebysectid(a.sectionid) as sectname,
--a.sectionid,
f_sys_employin ......