(1)普通的heap表 即我们常用的create table创建的表,普通heap表只有一个segment. (2)分区表 分区表主要是在普通表中,按字段范围进行了分区,分区方式分为:按值分区和按值进行hash后分区,分区表存在多个segment; (3)全局临时表 全局临时表主要有针对session的临时表和针对事务的临时表,数据会在commit或session退出,...
sales_dateDATE)PARTITIONBYLIST(sales_state) (PARTITIONsales_westVALUES('California','Hawaii'),PARTITIONsales_eastVALUES('New York','Virginia','Florida'),PARTITIONsales_centralVALUES('Texas','Illinois'),PARTITIONsales_otherVALUES(DEFAULT) ); Hash Partitioning CREATETABLEsales_hash (salesman_id NUMBER(...
1--Create a Table with four partitions each on its own tablespace2--Partitioned by range on the data column.3CREATETABLEfour_seasons4(5one DATE,6twoVARCHAR2(60),7threeNUMBER8)9PARTITIONBYRANGE ( one )10(11PARTITION quarter_one12VALUESLESS THAN ( TO_DATE('01-apr-1998','dd-mon-yyyy')...
ALTER TABLE SALES MODIFY PARTITION P3 ADD SUBPARTITION P3SUB1 VALUES('COMPLETE'); 2. 删除分区 以下代码删除了P3表分区: ALTER TABLE SALES DROP PARTITION P3; 在以下代码删除了P4SUB1子分区: ALTER TABLE SALES DROP SUBPARTITION P4SUB1; 注意:如果删除的分区是表中唯一的分区,那么此分区将不能被...
PARTITION CUS_PART2 VALUES LESS THAN (200000) TABLESPACE CUS_TS02 ) 例二:按时间划分 Java代码 CREATE TABLE ORDER_ACTIVITIES ( ORDER_ID NUMBER(7) NOT NULL, ORDER_DATE DATE, TOTAL_AMOUNT NUMBER, CUSTOTMER_ID NUMBER(7), PAID CHAR(1) ...
PARTITION CUS_PART2 VALUES LESS THAN (maxvalue) TABLESPACE part_Data3 ) 2、LIST 列表分区 说明:该分区的特点是某列的值只有有限个值,基于这样的特点我们可以采用列表分区。 规则:默认分区为DEFAULT,若不添加DEFAULT的分区插入数值不属于所设置的分区会报错。 例一、姓氏 CREATE TABLE PART_TAB_CUSTOMER_BY_LI...
partitionNames public Object partitionNames() Get the partitionNames property: Names of the physical partitions of Oracle table. Returns: the partitionNames value.partitionUpperBound public Object partitionUpperBound() Get the partitionUpperBound property: The maximum value of column specified in ...
partitionNames public Object partitionNames() Get the partitionNames property: Names of the physical partitions of Oracle table. Returns: the partitionNames value.partitionUpperBound public Object partitionUpperBound() Get the partitionUpperBound property: The maximum value of column specified in ...
partition p0 values (default));哈希分区:create table emp (empno number(4),ename varchar2(30),sal number)partition by hash (empno)partitions 8store in (emp1,emp2,emp3,emp4,emp5,emp6,emp7,emp8);组合分区:范围哈希组合分区:create table emp (...
ALTER TABLE range_example MODIFY PARTITION part02 REBUILD UNUSABLE LOCAL INDEXES;2. 合并子分区 ALTER TABLE composite_exampleMERGE SUBPARTITIONS part_1_sub_2,part_1_sub_3 INTO SUBPARTITION part_1_sub_2UPDATE INDEXES; 五、分割分区 hash partitions or subpartitions不能分割。如果指定的分割分区包含...