--间隔分区-- 时间间隔函数
-- 年,月 转换一个指定的 DEC 类型值到 INTERVAL YEAR TO MONTH
SELECT NUMTOYMINTERVAL(N,INTERVAL_UNIT);
SELECT SYSDATE+NUMTOYMINTERVAL(1,'YEAR');--按年 间隔分区
CREATE TABLE TYEAR(ID INT,NAME VARCHAR(20),BIR DATE)
PARTITION BY RANGE(BIR)
INTERVAL(NUMTOYMINTERVAL(1,'YEAR'))(
PARTITION P1990 VALUES LESS THAN (TO_DATE('1991-01-01','YYYY-MM-DD')),
PARTITION P1991 VALUES LESS THAN (TO_DATE('1992-01-01','YYYY-MM-DD')));
INSERT INTO TYEAR VALUES(1,'AAAAA','1990-03-01');
COMMIT; --存入P1990分区表中
INSERT INTO TYEAR VALUES(2,'BBBBB','1995-03-01');
COMMIT; --存入自动新建分区表中
2 按 月 - 间隔分区
sql复制代码
SELECT SYSDATE+NUMTOYMINTERVAL(1,'MONTH');--按月 间隔分区
CREATE TABLE TMONTH(ID INT,NAME VARCHAR(20),BIR DATE)
PARTITION BY RANGE(BIR)
INTERVAL(NUMTOYMINTERVAL(1,'MONTH'))(
PARTITION P9101 VALUES LESS THAN (TO_DATE('1991-02-01','YYYY-MM-DD')),
PARTITION P9102 VALUES LESS THAN (TO_DATE('1991-03-01','YYYY-MM-DD')));
INSERT INTO TMONTH VALUES(1,'AAAAA','1991-01-01');
COMMIT; --存入P9101分区表中
INSERT INTO TMONTH VALUES(2,'BBBBB','1991-05-01');
COMMIT; --存入自动新建分区表中
3 按 日 - 间隔分区
sql复制代码
SELECT NUMTODSINTERVAL(N,INTERVAL_UNIT);
SELECT SYSDATE+NUMTODSINTERVAL(1,'DAY'); --按 日 间隔分区
-- 日 转换一个指定的 DEC 类型到 INTERVAL DAY TO SECOND
SELECT NUMTODSINTERVAL(N,INTERVAL_UNIT);
SELECT SYSDATE+NUMTODSINTERVAL(1,'DAY');
CREATE TABLE TDAY(ID INT,NAME VARCHAR(20),BIR TIMESTAMP)
PARTITION BY RANGE(BIR)
INTERVAL(NUMTODSINTERVAL(1,'DAY'))(
PARTITION P910101 VALUES LESS THAN (TO_DATE('1991-01-02 00:00:00','YYYY-MM-DD HH24:MI:SS')),
PARTITION P910102 VALUES LESS THAN (TO_DATE('1991-01-03 00:00:00','YYYY-MM-DD HH24:MI:SS')));
INSERT INTO TDAY VALUES(1,'AAAAA','1991-01-01 00:00:00');
COMMIT; --存入P910101分区表中
INSERT INTO TDAY VALUES(2,'BBBBB','1991-01-05 00:00:00');
COMMIT; --存入自动新建分区表中
4 按 数值 - 间隔分区表
sql复制代码
--间隔分区表--数值间隔
CREATE TABLE T_R11
(EMPLOYEE_ID INT,
EMPLOYEE_NAME VARCHAR(20),
BIR DATETIME)
PARTITION BY RANGE(EMPLOYEE_ID)
INTERVAL(10)
(PARTITION P1990 VALUES LESS THAN(10));
insert into SYSDBA.T_R11 VALUES(9,'AAA','1990-01-01');
COMMIT; --存入P1990分区表中
insert into SYSDBA.T_R11 VALUES(10,'AAA','1990-01-01');
COMMIT; --存入自动新建的分区表中
insert into SYSDBA.T_R11 VALUES(20,'AAA','1990-01-01');
COMMIT; --存入再次新建的分区表中