oracle分区表创建(自动按年、月、日分区)实战记录

numtoyminterval(1, 'year')
--按年创建分区表
create table test_part
(
   ID NUMBER(20) not null,
   REMARK VARCHAR2(1000),
   create_time DATE
)
PARTITION BY RANGE (CREATE_TIME) INTERVAL (numtoyminterval(1, 'year'))
(partition part_t01 values less than(to_date('2018-11-01', 'yyyy-mm-dd')));
--创建主键
alter table test_part add constraint test_part_pk primary key (ID) using INDEX;
-- Create/Recreate indexes
create index test_part_create_time on TEST_PART (create_time);

numtoyminterval(1, 'month')
--按月创建分区表
create table test_part
(
   ID NUMBER(20) not null,
   REMARK VARCHAR2(1000),
   create_time DATE
)
PARTITION BY RANGE (CREATE_TIME) INTERVAL (numtoyminterval(1, 'month'))
(partition part_t01 values less than(to_date('2018-11-01', 'yyyy-mm-dd')));
--创建主键
alter table test_part add constraint test_part_pk primary key (ID) using INDEX;

NUMTODSINTERVAL(1, 'day')
--按天创建分区表
create table test_part
(
   ID NUMBER(20) not null,
   REMARK VARCHAR2(1000),
   create_time DATE
)
PARTITION BY RANGE (CREATE_TIME) INTERVAL (NUMTODSINTERVAL(1, 'day'))
(partition part_t01 values less than(to_date('2018-11-12', 'yyyy-mm-dd')));
--创建主键
alter table test_part add constraint test_part_pk primary key (ID) using INDEX;

NUMTODSINTERVAL (7, 'day')
--按周创建分区表
create table test_part
(
   ID NUMBER(20) not null,
   REMARK VARCHAR2(1000),
   create_time DATE
)
PARTITION BY RANGE (CREATE_TIME) INTERVAL (NUMTODSINTERVAL (7, 'day'))
(partition part_t01 values less than(to_date('2018-11-12', 'yyyy-mm-dd')));
--创建主键
alter table test_part add constraint test_part_pk primary key (ID) using INDEX;

可以添加几条数据来看看效果，oracle 会自动添加分区。
--查询当前表有多少分区
select table_name,partition_name from user_tab_partitions where table_name='TEST_PART';
--查询这个表的某个（SYS_P21）里的数据
select * from TEST_PART partition(SYS_P21);

 select sysdate, sysdate + numtodsinterval(4,'hour') as res from dual;

select sysdate, sysdate + numtoyminterval(3, 'year') as res from dual;

alter table test_part rename to test_part_temp;

create table test_part
(
   ID NUMBER(20) not null,
   REMARK VARCHAR2(1000),
   create_time DATE
)
PARTITION BY RANGE (CREATE_TIME) INTERVAL (numtoyminterval(1, 'month'))
(partition part_t1 values less than(to_date('2018-11-01', 'yyyy-mm-dd')));

alter table test_part add constraint test_part_pk_1 primary key (ID) using INDEX;

insert into test_part_temp select * from test_part;

-- Create/Recreate indexes
create index test_part_create_time_1 on TEST_PART (create_time);

drop table test_part_temp purge;

alter table test_part enable row movement;