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