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1. Ê÷²éѯ
create table tree (
    id number(10) not null primary key,
    name varchar2(100) not null,
    super number(10) not null                // 0 is root
);
-- ´Ó×Óµ½¸¸
select * from tree start with id = ? connect by id = prior super 
-- ´Ó¸¸µ½×Ó
select * from tree start with id = ? connect by prior id = super
-- Õû¿ÃÊ÷
select * from tree start with super = 0 connect by prior id = super
2. ·ÖÒ³²éѯ
select * from ( 
    select my_table.*, rownum  my_rownum from ( 
        select name, birthday from employee order by birthday
    ) my_table where rownum < 120 
) where my_rownum >= 100;
3. ÀÛ¼Ó²éѯ, ÒÔscott.empΪÀý
select empno, ename, sal, sum(sal) over(order by empno) result from emp;
 
     EMPNO ENAME             SAL     RESULT
---------- ---------- ---------- ----------
      7369 SMITH             800        800
      7499 ALLEN   &


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2009-12-30 15:00
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oracleËÀËø

Èç¹ûÔÚÊÂÎñÖÐÖ´ÐÐÁËÒ»Ìõ²»Âú×ãÌõ¼þµÄupdateÓï¾ä£¬ÔòÖ´ÐÐÈ«±íɨÃ裬°ÑÐм¶ËøÉÏÉýΪ±í¼¶Ëø£¬¶à¸öÕâÑùµÄÊÂÎñÖ´Ðк󣬾ͺÜÈÝÒײúÉúËÀËø¡£
ËÀËøÒ»°ãÊÇÒò×¾ÁÓµÄÊÂÎñÉè¼Æ¶ø²úÉú insert, update, delete
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oracleÔÚlinuxÏÂÆô¶¯Ïà¹ØÃüÁî

1¡¢´ÓrootÓû§Çл»µ½oracleÓû§
#su - oracle
2¡¢ÀûÓÃnologÑ¡ÏîÆô¶¯sql*plus¹¤¾ß³ÌÐò
$slqplus /nolog
3¡¢ÀûÓÃsysdbaÉí·ÝÆô¶¯oracleÊý¾Ý¿â
sql>connect / as sysdba
sql>startup
4¡¢Æô¶¯Êý¾Ý¿âµÄ¼àÌýÆ÷listener
$lsnrctl start
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$lsnrctl
lsnrctl>start
5¡¢¹Ø±ÕoracleÊý¾Ý¿â¼àÌý
$lsnrctl stop
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ORACLE ÖÐINºÍEXISTSµÄÇø±ð

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EXISTSµÄÖ´ÐÐÁ÷³Ì     
select * from t1 where exists ( select null from t2 where y = x )
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  for x in ( select * from t1 )
  loop
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oracle online documentation

oracle 9i online documentation:
http://www.oracle.com/pls/db92/db92.docindex?remark=homepage
oracle 10g online documentation:
http://www.oracle.com/pls/db102/homepage
oracle 11g online documentation:
http://www.oracle.com/pls/db111/homepage ......
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