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oracle olapº¯Êý£¨Ðø£©

/*connect byº¯Êý*/
CREATE TABLE TBL_TEST
(
  ID    NUMBER,
  NAME  VARCHAR2(100 BYTE),
  PID   NUMBER                                  DEFAULT 0
);
INSERT INTO TBL_TEST(ID,NAME,PID) VALUES('1','10','0');
INSERT INTO TBL_TEST(ID,NAME,PID) VALUES('2','11','1');
INSERT INTO TBL_TEST(ID,NAME,PID) VALUES('3','20','0');
INSERT INTO TBL_TEST(ID,NAME,PID) VALUES('4','12','1');
INSERT INTO TBL_TEST(ID,NAME,PID) VALUES('5','121','2');
INSERT INTO TBL_TEST(ID,NAME,PID) VALUES('6','126','2');
INSERT INTO TBL_TEST(ID,NAME,PID) VALUES('7','127','1');
commit;
--´ÓRootÍùÊ÷Ä©Éҵݹé
select * from TBL_TEST
start with id=1
connect by prior id = pid
order by pid,id
--´ÓÄ©ÉÒÍùÊ÷ROOTµÝ¹é
select * from TBL_TEST
start with id=5
connect by prior pid=id
/*leadÏÂÒ»¸ö  lagÉÏÒ»¸ö*/
create table LEAD_TABLE
(
  CASEID     VARCHAR2(10),
  STEPID     VARCHAR2(10),
  ACTIONDATE DATE
);
  insert into LEAD_TABLE values('Case1','Step1',to_date('20070101','yyyy-mm-dd'));
  insert into LEAD_TABLE values('Case1','Step2',to_date('20070102','yyyy-mm-dd'));
  insert into LEAD_TABLE values('Case1','Step3',to_date('20070103','yyyy-mm-dd'));
  insert into LEAD_TABLE values('Case1','Step4',to_date('20070104','yyyy-mm-dd'));
  insert into LEAD_TABLE values('Case1','Step5',to_date('20070105','yyyy-mm-dd'));
  insert into LEAD_TABLE values('Case1','Step4',to_date('20070106','yyyy-mm-dd'));
  insert into LEAD_TABLE values('Case1','Step6',to_date('20070101','yyyy-mm-dd'));
  insert into LEAD_TABLE values('Case1','Step1',to_date('20070201','yyyy-mm-dd'));
  insert into LEAD_TABLE values('Case2','Step2',to_date('20070202','yyyy-mm-dd'));
  insert into LEAD_TABLE valu


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oracle olapº¯Êý

/*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; ......
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