原文来自:http://blog.itpub.net/756652/viewspace-697256/
11g interval分区,按天分区,需要用到函数numtodsinterval。
create table T_PAR
( dt date ) partition by range (dt) interval(numtodsinterval(1,'day')) ( PARTITION SYS_001 VALUES LESS THAN (TO_DATE('20110501','yyyymmdd')) ); ###################################################################
numtodsinterval(,),x是一个数字,c是一个字符串,
表明x的单位,这个函数把x转为interval day to second数据类型 常用的单位有 ('day','hour','minute','second') example SQL> select sysdate,sysdate+numtodsinterval(3,'hour') as res from dual; SYSDATE RES ------------------- ------------------- 2007-09-05 01:45:34 2007-09-05 04:45:34 numtoyminterval与numtodsinterval函数类似,将x转为interval year to month数据类型
常用的单位有'year','month'
example
SQL> select sysdate,sysdate+numtoyminterval(3,'year') as res from dual;
SYSDATE RES
------------------- ------------------- 2007-09-05 01:54:53 2010-09-05 01:54:53 |