CREATE TABLE partitioned_table ( id NUMBER, data_date DATE, data_value NUMBER ) PARTITION BY RANGE (data_date) ( PARTITION p1 VALUES LESS THAN (TO_DATE('2022-01-01', 'YYYY-MM-DD')), PARTITION p2 VALUES LESS THAN (TO_DATE('2023-01-01', 'YYYY-MM-DD')), PARTITION p3 VALUES LES...
语法及说明: create table table_name( col1 datatype, col2 datatype, ... ) partition by partition_method(column_name) ( partition partition_name values(value1), partition partition_name values(value2), ... ) 其中partition_methon可以用如下几种: range:按照分区; list:按照列表; hash:按照哈希...
列表分区表是通过 create table 语句的 partition by list 子句来创建的,创建时你需要为每个分区指定一个列表(离散值)。 create table list_part1 ( id number, name varchar2(32), city varchar2(32)) partition by list(city) ( partition p_jiangsu values ('NanJing', 'SuZhou'), partition p_zhejiang...
SQL> alter table emp3 drop partition p3; SQL> alter table emp3 add partition p3 values less than (to_date('2016-07-01','yyyy-mm-dd')) tablespace cuug; SQL> SELECT table_name,partition_name,tablespace_name FROM ALL_TAB_PARTITIONS WHERE TABLE_NAME='EMP3'; TABLE_NAME PARTITION_NAME TAB...
createtableEMP_RANGE ( empnoNUMBER(4)notnull, enameVARCHAR2(10), jobVARCHAR2(9), mgrNUMBER(4), hiredate DATE, salNUMBER(7,2)notnull, commNUMBER(7,2), deptnoNUMBER(2) ) partitionbyrange (HIREDATE) ( partition P_HIREDATE_1valuesless than (TO_DATE('1981-01-01 00:00:00','SYYYY-...
(1)Global Range Partitioned Indexes Global range partitioned indexes are flexible in that the degree of partitioning and the partitioning key are independent from the table’s partitioning method. They are commonly used for OLTP environments and offer efficient access to any individual record. ...
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:...
Oracle数据库分区技术主要通过以下步骤和方式进行：一、创建分区表 使用CREATE TABLE语句：通过指定PARTITION BY子句来定义分区方式，如范围分区、列表分区等。例如，使用范围分区时，可以指定基于某个列的值范围来创建多个分区。二、创建分区索引 使用CREATE INDEX语句：为分区表创建分区索引，以提高查询效率。
CREATE TABLE range_hash_example(ITPUB个人空间8D P_o_m:O_V range_column_key DATE, _k R:e_eD+t_a0hash_column_key INT,ITPUB个人空间_H1N J_m_d u_`_Y DATA VARCHAR2(20)ITPUB个人空间_Y_h u_j*G W_z*b )ITPUB个人空间_X_c O0Ux_H6vy PARTITION BY RANGE(range_column_key)ITPUB个人...