創建range 分區:
創建測試的tablespace
[oracle@CICQAS sfisarch]$ export ORACLE_SID=spring01;
[oracle@CICQAS sfisarch]$ sqlplus /nolog
SQL*Plus: Release 9.2.0.7.0 - Production on Wed Jun 1 01:34:48 2011
Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved.
SQL> conn / as sysdba
Connected.
SQL> select instance_name from v$instance;
INSTANCE_NAME
----------------
spring01
SQL> create tablespace tbspart01 datafile '/sfisdata/spring/spring01.dbf' size 200M;
Tablespace created.
SQL> create tablespace tbspart02 datafile '/sfisdata/spring/spring02.dbf' size 200M;
Tablespace created.
SQL> create tablespace tbspart03 datafile '/sfisdata/spring/spring03.dbf' size 200M;
Tablespace created.
SQL> create tablespace tbspart04 datafile '/sfisdata/spring/spring04.dbf' size 200M;
Tablespace created.
1 創建一個標準的range分區表:
SQL> create table t_partition_range (id number,name varchar2(50))
2 partition by range(id)(
3 partition t_range_p1 values less than (10) tablespace tbspart01,
4 partition t_range_p2 values less than (20) tablespace tbspart02,
5 partition t_range_p3 values less than (30) tablespace tbspart03,
6 partition t_range_pmax values less than (maxvalue) tablespace tbspart04
7 );
Table created
查詢分區表的信息,可以通過查詢user_part_tables,user_tab_partitions 兩個數據字典
user_part_tables:記錄分區表的信息;
user_tab_partitions:記錄表的分區的信息。
例如:
查看分區表的信息:
SQL> select table_name,partitioning_type,partition_count from user_part_tables where
table_name='T_PARTITION_RANGE';
TABLE_NAME PARTITIONING_TYPE PARTITION_COUNT
------------------------------ ----------------- ---------------
T_PARTITION_RANGE RANGE 4
查看表分區的信息:
SQL> select TABLE_NAME,PARTITION_NAME ,HIGH_VALUE ,TABLESPACE_NAME from user_tab_partitions where
2 table_name='T_PARTITION_RANGE';
TABLE_NAME PARTITION_NAME HIGH_VALUE
TABLESPACE_NAME
------------------------------ ------------------------------ ----------------------------------------------
---------------------------------- ------------------------------
T_PARTITION_RANGE T_RANGE_P1 10
TBSPART01
T_PARTITION_RANGE T_RANGE_P2 20
TBSPART02
T_PARTITION_RANGE T_RANGE_P3 30
TBSPART03
T_PARTITION_RANGE T_RANGE_PMAX MAXVALUE
創建global索引range分區:
SQL> create index indx_parti_range_id on t_partition_range(id) global partition by range(id)
2 (partition i_range_p1 values less than(10) tablespace tbspart01,
3 partition i_range_p2 values less than(40) tablespace tbspart02,
4 partition i_range_pmax values less than (maxvalue) tablespace tbspart03
5 );
Index created
創建global 索引的分區和創建表的分區語句格式完全相同,而且其分區形式與索引所在表的分區形式沒有關聯關係。
查詢索引的分區信息可以通過user_part_indexes,user_ind_partitions 兩個數據字典:
例如:
SQL> select INDEX_NAME ,table_name,PARTITIONING_TYPE ,PARTITION_COUNT from user_part_indexes
2 where table_name='T_PARTITION_RANGE' and index_name='INDX_PARTI_RANGE_ID';
INDEX_NAME TABLE_NAME PARTITIONING_TYPE PARTITION_COUNT
------------------------------ ------------------------------ ----------------- ---------------
INDX_PARTI_RANGE_ID T_PARTITION_RANGE RANGE 3
SQL> select INDEX_NAME ,PARTITION_NAME ,HIGH_VALUE ,TABLESPACE_NAME from user_ind_partitions
2 where index_name='INDX_PARTI_RANGE_ID';
INDEX_NAME PARTITION_NAME HIGH_VALUE
TABLESPACE_NAME
------------------------------ ------------------------------ ----------------------------------------------
---------------------------------- ------------------------------
INDX_PARTI_RANGE_ID I_RANGE_P1 10
TBSPART01
INDX_PARTI_RANGE_ID I_RANGE_P2 40
TBSPART02
INDX_PARTI_RANGE_ID I_RANGE_PMAX MAXVALUE
創建local 分區:
SQL> drop index INDX_PARTI_RANGE_ID;
Index dropped
SQL> create index INDX_PARTI_RANGE_ID on t_partition_range(id) local;
Index created
local索引的分區完全繼承表的分區的屬性,包括分區的類型,分區的範圍值即不需要指定也不能更改,就是前面說的:
local 索引的分區維護完全依賴與其索引所在的表。但是表空間可以不同。測試按照上面的進行。
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