通过交换分区的方式将数据以累加的形式添加到分区表中

有个模型：一张非分区表，一个分区表，现在需要不通过insert的方式，将数据添加到分区表中。
http://blog.csdn.net/tianlesoftware/article/details/4717318 http://blog.csdn.net/robinson_0612/article/details/5925572
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1.创建分区表

drop table t_phone_test purge;

create table t_phone_test(phone,part) nologging partition by list(part)

(

partition p0 values('0'),

partition p1 values('1'),

partition p2 values('2'),

partition p3 values('3'),

partition p4 values('4'),

partition p5 values('5'),

partition p6 values('6'),

partition p7 values('7'),

partition p8 values('8'),

partition p9 values('9')

)

as

select user_mobile phone,substr(user_mobile,-1,1) part

from t_user_info_test;

select count(*) from t_phone_test partition(p0);--4410

select count(*) from t_phone_test partition(p10);

select count(*) from t_phone_test_10;

select count(*) from t_phone_test_0;

2.创建基表

drop table t_phone_test_10 purge;

create table t_phone_test_10 nologging

as

select phone,substr(phone,-2,2) part

from t_phone_test where substr(phone,-2,2)='10';

select count(*) from t_phone_test_10;--406

--ORA-14097: column type or size mismatch in ALTER TABLE EXCHANGE PARTITION

alter table T_PHONE_TEST_10 modify PART VARCHAR2(2);

3.添加分区

alter table t_phone_test add partition p10 values( '10');

select count(*) from t_phone_test partition(p10);--0

4.交换分区

alter table t_phone_test exchange partition p10 with table t_phone_test_10;

select count(*) from t_phone_test partition(p10);--406

5.合并分区

alter table t_phone_test merge partitions p0,p10 into partition p0;

select count(*) from t_phone_test partition(p0);--4816

--此时p0中有p0和p10的数据，但是p0的list不再是0而是0和10

partition P0 values ('10', '0')

tablespace APP_DATAN

pctfree 10

initrans 1

maxtrans 255

storage

(

initial 1M

next 1M

minextents 1

maxextents unlimited

pctincrease 0

),

6.交换分区

alter table t_phone_test exchange partition p0 with table t_phone_test_10;

select count(*) from t_phone_test partition(p0);--0

select count(*) from t_phone_test_10;--4816

6.删除分区 和添加分区

alter table t_phone_test drop partition p0;

alter table t_phone_test add partition p0 values('0');

7.筛选数据

drop table t_phone_test_0 purge;

create table t_phone_test_0 nologging

as

select phone,substr(phone,-1,1) part

from t_phone_test_10 where substr(phone,-1,1)='0';

select count(*) from t_phone_test_0;--4816

8.交换分区

alter table t_phone_test exchange partition p0 with table t_phone_test_0;

select count(*) from t_phone_test partition(p0);--4816

select count(*) from t_phone_test_0;--0