SQL>create table Thash2(3id number primary key,4item_idnumber(8)notnull5)6partition byhash(id)7(8partition part_01,9partition part_02,10partition part_0311);表已创建。 (2)创建分区索引 示例2:全局分区索引 代码语言:javascript
'select count(*) from hash_part_tab partition('||partition_name||');' from user_segments where segment_name ='HASH_PART_TAB'; 创建索引: create index idx_hash_part_id on hash_part_tab (id) ; create index idx_hash_part_nbr on hash_part_tab (nbr) local; 收集统计信息: exec dbms_s...
CREATE TABLE HASH_TABLE ( COL NUMBER(8), INF VARCHAR2(100) ) PARTITION BY HASH (COL) ( PARTITION PART01 TABLESPACE HASH_TS01, PARTITION PART02 TABLESPACE HASH_TS02, PARTITION PART03 TABLESPACE HASH_TS03 ) 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 简写: CREATE TABLE emp ( empno ...
PARTITION BY RANGE(range_column) ( PARTITION part_1 VALUE LESS THAN(18), PARTITION part_2 VALUE LESS THAN(40), PARTITION part_3 VALUE LESS THAN(120) ) ; 2.散列分区 create table range_example ( range_column number, sj date ) PARTITION BY HASH(range_column) ( PARTITION part_1, PARTITI...
--创建全局hash分区 createindexsf2021_idx_hashonsf2021(sf_id)globalpartitionbyhash(sf_id)partitions6; --查看 SQL>selectindex_name,PARTITION_NAME,STATUSfromDBA_IND_PARTITIONSwhereindex_name='SF2021_IDX_HASH'; INDEX_NAME PARTITION_NAMESTATUS ...
select index_name, partitioning_type, partition_count from user_part_indexes user_part_tables:记录分区的表的信息; user_tab_partitions:记录表的分区的信息 user_part_indexes:查询用户索引信息。 --5、hash分区 create table P_TABLE_PAR(GID,IID,FLID,PZXMNAME,DYLX,DYXM,AMENDBZ) ...
8 partition pl_04 tablespace ts04, 9 partition pl_05 tablespace ts05 10 ) 11 / Index created. -- CREATE THE GLOBAL INDEXES luocs@MAA> create index inx_ts_ltb_global 2 on ts_ltb(name) 3 global 4 partition by hash(name) 5 partitions 5 ...
由于hash分区的缘故,数据分布不均匀。 6、列表哈希组合分区 (1)建表语句 create table WORKER_202307 ( id VARCHAR2(100) not null, name VARCHAR2(200), technology VARCHAR2(100), save_date DATE ) partition by list (technology) SUBPARTITION BY HASH (id) ...
List—Hash 基于上述的两个基本技术Range,list,hash,interval分区的组合 Order表按order_date列进行范围分区,子分区按customer_id列进行哈希分区。 Order表按order_date列进行范围分区,子分区按shipment_date列进行范围分区 Oracle_11g附加分区策略和概述 分区扩展 ...
分区类型:分区分为范围分区、列表分区、HASH分区、组合分区四种,图来自Oracle官方网站 3.1 范围分区 关键字partition by range 代码语言:javascript 代码运行次数:0 运行 AI代码解释 create table range_part_tab (seq number,deal_date date,unit_code number,remark varchar2(100)) partition by range (deal_date...