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/*sum()over()*/
--ĬÈϼÆËãËùÓÐÐеĺϼÆ
select t.empno,t.ename,t.sal,t.deptno,sum(t.sal)over()
from scott.emp t;
--partition by·Ö×éºÏ¼Æ
select t.empno,t.ename,t.sal,t.deptno,
       sum(t.sal)over(partition by t.deptno)
from scott.emp t
order by t.deptno,t.sal;
--partition by order by deptno·Ö×éÀÛ¼Æ
select t.empno,t.ename,t.sal,t.deptno,
       sum(t.sal)over(partition by t.deptno order by t.sal)
from scott.emp t;
--rows n preceding È¡µ±Ç°ÐÐ+Ç°nÐÐ=(n+1)ÐÐ
--ͨ¹ýorder by desc¿ÉÒÔÈ¡ºónÐÐ
select t.empno,t.ename,t.sal,t.deptno,
       sum(t.sal)over(order by t.deptno,t.sal rows 1 preceding)
from scott.emp t;
--rows 2n+1 È¡µ±Ç°ÐÐ+Ç°nÐÐ+ºónÐÐ=(2n+1)ÐÐ
select t.empno,t.ename,t.sal,t.deptno,
       sum(t.sal)over(order by t.deptno,t.sal rows between 1 preceding and 1 following)
from scott.emp t;
/*first_value() over()*/
select deptno,ename,sal,hiredate,
¡¡¡¡first_value(ename) over(partition by deptno order by sal asc rows 5 preceding) first_ename
¡¡¡¡from emp  order by hiredate asc;
/*avg()over  count() over()  max()over() min()over()*/
select deptno,sal,
    sum(sal)over(partition by deptno) as sumsal,
¡¡¡¡avg(sal)over(partition by deptno) as avgsal,
¡¡¡¡count(*)over(partition by deptno) as count,
¡¡¡¡max(sal)over(partition by deptno) as maxsal
from emp;
/*rank()over() dese_rank()over() row_number()over()*/
select empno, deptno, sal,
    rank()   over (order by deptno desc nulls last) as rank,
    dense_rank()  over (partition by deptno order by sal desc nulls last) as dense_rank,
    row_number()  over(partition by deptno order by sal desc nulls last) as row_number
from emp;
/*stddev() over()*±ê×¼²î/
select empno, deptno, sal,stddev(sal) over(order by sal)
from emp;


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block --×îСi/oµ¥Î»      --segment    management
create tablespace james
datafile '/export/home/oracle/oradata/james.dbf'
size 100M ¡¡¡¡¡¡¡¡¡¡¡¡--³õʼµÄÎļþ´óС¡¡
autoextend On¡¡¡¡¡¡¡¡ --×Ô¶¯Ôö³¤
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set
pagesize 1000
set
linesize 132
col
TS_NAME form a24
col
PIECES form 9999
col
PCT_FREE form 999.9
col
PCT_USED form 999.9
select
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PIECES,
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oracle sqlplus ³£ÓÃÃüÁî´óÈ«

showºÍsetÃüÁîÊÇÁ½ÌõÓÃÓÚά»¤SQL*Plusϵͳ±äÁ¿µÄÃüÁî
SQL> show all --²é¿´ËùÓÐ68¸öϵͳ±äÁ¿Öµ
SQL> show user --ÏÔʾµ±Ç°Á¬½ÓÓû§
SQL> show error¡¡¡¡ --ÏÔʾ´íÎó
SQL> set heading off --½ûÖ¹Êä³öÁбêÌ⣬ĬÈÏֵΪON
SQL> set feedback off --½ûÖ¹ÏÔʾ×îºóÒ»ÐеļÆÊý·´À¡ÐÅÏ¢£¬Ä¬ÈÏֵΪ"¶Ô6¸ö» ......
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