如何创建oracle分区表?
分区表可以提高整体的数据库访问速度,提升oracle数据库性能,一起来了解下oracle分区表的创建方法吧。
1、按月创建分区
复制代码 代码示例:
create table T_MHDP
(
ID VARCHAR2(50) not null,
FLT_AIRCODE VARCHAR2(4),
FLT_NUMBER NUMBER(7),
FLT_DATE DATE
) partition by range (FLT_DATE)
(
partition PART201105 values less than (TO_DATE(' 2011-06-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIAN'))
tablespace TS_MHDP_1105
pctfree 10
initrans 1
maxtrans 255
storage -- by www.jb200.com
(
initial 64K
next 1M
minextents 1
maxextents unlimited
),
partition PART201106 values less than (TO_DATE(' 2011-07-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIAN'))
tablespace TS_MHDP_1106
pctfree 10
initrans 1
maxtrans 255
storage
(
initial 64K
next 1M
minextents 1
maxextents unlimited
),
partition PART201107 values less than (TO_DATE(' 2011-08-01 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIAN'))
tablespace TS_MHDP_1107
pctfree 10
initrans 1
maxtrans 255
storage
(
initial 64K
next 1M
minextents 1
maxextents unlimited
),
partition PARTDEFAULT values less than (TO_DATE(' 9999-12-30 00:00:00', 'SYYYY-MM-DD HH24:MI:SS', 'NLS_CALENDAR=GREGORIAN'))
tablespace TS_MHDP
pctfree 10
initrans 1
maxtrans 255
storage
(
initial 64K
next 1M
minextents 1
maxextents unlimited
)
);
2、创建全局索引
复制代码 代码示例:
create index INDEX_MHDP_PK on T_MHDP(ID)
tablespace TS_INDEX_MHDP
pctfree 10
initrans 2
maxtrans 255
storage
(
initial 64K
next 1M
minextents 1
maxextents unlimited
);
3、创建本地索引
复制代码 代码示例:
CREATE INDEX INDEX_MHDP_PK ON T_MHDP(ID) LOCAL (
PARTITION PART201105 TABLESPACE TS_MHDP_INDEX_1105,
PARTITION PART201106 TABLESPACE TS_MHDP_INDEX_1106,
PARTITION PART201107 TABLESPACE TS_MHDP_INDEX_1107,
PARTITION PARTDEFAULT TABLESPACE TS_MHDP_INDEX
);