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SELECT /*+ rule */ s.username,
decode(l.type,'TM','TABLE LOCK',
'TX','ROW LOCK',
NULL) LOCK_LEVEL,
o.owner,o.object_name,o.object_type,
s.sid,s.serial#,s.terminal,s.machine,s.program,s.osuser
from v$session s,v$lock l,dba_objects o
WHERE ......

oracle ÈÕÆÚ¹ÜÀíº¯Êý

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  add_months(d,n) ÈÕÆÚd¼Ón¸öÔÂ
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  new_time(d,a,b) a?ÇøµÄÈÕÆÚºÍ??dÔÚb?ÇøµÄÈÕÆÚºÍ??
  next_day(d,day) ±È ......

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CREATE TABLE salaryByMonth
(
 employeeNo varchar2(20),
 yearMonth varchar2(6),
 salary number
) ;
insert into SALARYBYMONTH (EMPLOYEENO, YEARMONTH, SALARY)
values (1, '200805', 500);
insert into SALARYBYMONTH (EMPLOYEENO, YEARMONTH, SALARY)
values (1, '200802', 150);
in ......

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/*connect byº¯Êý*/
CREATE TABLE TBL_TEST
(
  ID    NUMBER,
  NAME  VARCHAR2(100 BYTE),
  PID   NUMBER                          ......
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