Oracle分区 (Range + Interval)

–1. 按number形式分区
–1.1 删除表
drop table PART_TAB_CUSTOMER_BY_RANGE cascade;

–1.2 建分区
CREATE TABLE PART_TAB_CUSTOMER_BY_RANGE
(
CUSTOMER_ID NUMBER NOT NULL PRIMARY KEY,
FIRST_NAME VARCHAR2(30) NOT NULL,
LAST_NAME VARCHAR2(30) NOT NULL,
PHONE VARCHAR2(15) NOT NULL,
EMAIL VARCHAR2(80),
SEX VARCHAR2(10),
STATUS VARCHAR2(10),
INSERT_DATE DATE
)
PARTITION BY RANGE (CUSTOMER_ID)
(
PARTITION CUS_PART1 VALUES LESS THAN (100000) TABLESPACE USERS,
PARTITION CUS_PART2 VALUES LESS THAN (200000) TABLESPACE USERS,
PARTITION CUS_PART3 VALUES LESS THAN (maxvalue) TABLESPACE USERS
)

–1.3 拆分区, 从max value中拆分出来
ALTER TABLE PART_TAB_CUSTOMER_BY_RANGE
SPLIT PARTITION CUS_PART3
AT (300000)
INTO ( PARTITION CUS_PART4,PARTITION CUS_PART3);

ALTER TABLE PART_TAB_CUSTOMER_BY_RANGE
SPLIT PARTITION CUS_PART3
AT (400000)
INTO ( PARTITION CUS_PART5,PARTITION CUS_PART3);

–1.4 拆完后如遇到 索引不可用状态则需rebuild index
SELECT OWNER, INDEX_NAME,STATUS FROM DBA_INDEXES WHERE INDEX_NAME=‘SYS_C0011120’ ;
ALTER INDEX SYS_C0011120 REBUILD;

–1.4 加分区, 如果没有LESS THAN (maxvalue)限制
ALTER TABLE PART_TAB_CUSTOMER_BY_RANGE
ADD PARTITION CUS_PART6
VALUES LESS THAN (500000) TABLESPACE USERS;

–drop patition, 真的会删除数据, 不要轻易使用
ALTER TABLE PART_TAB_CUSTOMER_BY_RANGE DROP PARTITION CUS_PART3;
ALTER TABLE PART_TAB_CUSTOMER_BY_RANGE DROP PARTITION CUS_PART4;

–2 按照日期建立分区
–2.1 建分区
drop table PART_TAB_CUSTOMER_BY_DATERANGE;
CREATE TABLE PART_TAB_CUSTOMER_BY_DATERANGE
(
CUSTOMER_ID NUMBER NOT NULL PRIMARY KEY,
FIRST_NAME VARCHAR2(30) NOT NULL,
LAST_NAME VARCHAR2(30) NOT NULL,
PHONE VARCHAR2(15) NOT NULL,
BATCH_ID NUMBER(15) NOT NULL,
EMAIL VARCHAR2(80),
SEX VARCHAR2(10),
STATUS VARCHAR2(10),
INSERT_DATE DATE
)
PARTITION BY RANGE (INSERT_DATE)
INTERVAL (numtodsinterval(1,‘day’))
(
PARTITION P1 VALUES LESS THAN (TO_DATE(‘2014-1-1’, ‘YYYY-MM-DD’)),
PARTITION P2 VALUES LESS THAN (TO_DATE(‘2014-1-2’, ‘YYYY-MM-DD’))
);

–插数据, 系统自建分区
insert into PART_TAB_CUSTOMER_BY_DATERANGE (CUSTOMER_ID, FIRST_NAME, LAST_NAME, PHONE, BATCH_ID, EMAIL, SEX, STATUS, INSERT_DATE)
values (10001, ‘10000’, ‘10000’, ‘10000’, 10000, ‘10000’, ‘10000’, ‘10000’, to_date(‘01-01-2014’, ‘dd-mm-yyyy’));

insert into PART_TAB_CUSTOMER_BY_DATERANGE (CUSTOMER_ID, FIRST_NAME, LAST_NAME, PHONE, BATCH_ID, EMAIL, SEX, STATUS, INSERT_DATE)
values (10002, ‘10000’, ‘10000’, ‘10000’, 10000, ‘10000’, ‘10000’, ‘10000’, to_date(‘02-01-2014’, ‘dd-mm-yyyy’));

insert into PART_TAB_CUSTOMER_BY_DATERANGE (CUSTOMER_ID, FIRST_NAME, LAST_NAME, PHONE, BATCH_ID, EMAIL, SEX, STATUS, INSERT_DATE)
values (10003, ‘10000’, ‘10000’, ‘10000’, 10000, ‘10000’, ‘10000’, ‘10000’, to_date(‘02-01-2020’, ‘dd-mm-yyyy’));