哈希分区表是通过 create table 语句的 partition by hash 子句来创建的,创建时你可以显式的指定每个分区名称,所属表空间。 create table hash_part1 ( id number, name varchar2(32)) partition by hash(id) ( partition p1 tablespace tbs1, partition p2 tablespace tbs2 ); 也可以仅指定哈希分区的数量,...
PARTITION partition2015VALUESLESS THAN(to_date('2016-01-01:00:00:00','yyyy-mm-dd hh24:mi:ss')) ); (3.2)按”月“自动创建分区(关键字:NUMTOYMINTERVAL) 例子:创建按月自动分区表,按照员工生日(birthday字段),每月一个分区。 --创建按月分区表CREATETABLEinterval_month_table01 ( employee_idNUMBER,...
SQL> CREATE TABLE T_NEW (ID, TIME) PARTITION BY RANGE (TIME) 2 (PARTITION P1 VALUES LESS THAN (TO_DATE('2004-7-1', 'YYYY-MM-DD')), 3 PARTITION P2 VALUES LESS THAN (TO_DATE('2005-1-1', 'YYYY-MM-DD')), 4 PARTITION P3 VALUES LESS THAN (TO_DATE('2005-7-1', 'YYYY-MM-...
ALTER TABLE hash_example ADD PARTITION part03; --hash partitioned table 新增partition时,现有表的中所有data都有重新计算hash值,然后重新分配到分区中。 --所以被重新分配的分区的 indexes需要rebuild --增加subpartition ALTER TABLE range_hash_example MODIFY PARTITION part_1 ADD SUBPARTITION part_1_sub_4;...
PARTITION [partition_name] VALUES (value[, value]...) [TABLESPACE tablespace_name] [(subpartition, ...)] Range partitioning syntax The second form is to create a range-partitioned table: CREATE TABLE [ schema. ]table_name table_definition PARTITION BY RANGE(column[, column ]...) [SUBPARTI...
1) Create a partitioned table: SQL> create table partbl (qty number(3), name varchar2(15)) partition by range (qty) (partition p1 values less than (501),partition p2 values less than (maxvalue)); 2) Insert into the partitioned table with a subquery from the non-partitioned table:...
1) Create a partitioned table: SQL> create table partbl (qty number(3), name varchar2(15)) partition by range (qty) (partition p1 values less than (501),partition p2 values less than (maxvalue)); 2) Insert into the partitioned table with a subquery from the non-partitioned table:...
CREATE TABLE hash_example( hash_key_column DATE, DATA VARCHAR2(20) ) PARTITION BY HASH(hash_key_cloumn) ( PARTITION part01 , PARTITION part02 ); 4、组合分区表 CREATE TABLE range_hash_example( range_column_key DATE, hash_column_key INT, ...
CREATE TABLE ListTable ( id INT PRIMARY KEY , name VARCHAR (20), area VARCHAR (10) ) PARTITION BY LIST (area) ( PARTITION part1 VALUES ('guangdong','beijing') TABLESPACE Part1_tb, PARTITION part2 VALUES ('shanghai','nanjing') TABLESPACE Part2_tb ); ) 散列分区: 这类分区是在列值上...
The following example shows how to create a hash partition table. The following example creates a hash-partitioned table. The partitioning column is partno, four partitions are created and assigned system generated names, and they are placed in four named tablespaces (tab1,tab2, ...). ...