SQL> CREATE TABLE dba_p1 as SELECT id,time_fee FROM dba_old WHERE time_fee<TO_DATE('2010-09-1', 'YYYY-MM-DD'); 表已创建。 SQL> CREATE TABLE dba_p2 as SELECT id,time_fee FROM dba_old WHERE time_fee<TO_DATE('2010-11-1', 'YYYY-MM-DD') and time_fee>TO_DATE('2010-09-1...
ALTER TABLE SALES SBLIT PARTITION P2 AT(TO_DATE('2003-02-01','YYYY-MM-DD')) INTO (PARTITION P21,PARTITION P22); 此拆分语句是将P2分区拆分为PARTITION P21与PARTITION P22两个分区,日期小于2003-02-01的数据存于 P21分区中否则存于 P22分区中。 --包含PMAX分区的表拆分分区 ALTER TABLE hs_his.HI...
create tablespace tbs2; create tablespace tbs3; create table members ( id number, name varchar2(32), create_time date) partition by range(create_time) ( partition p1 values less than (to_date('2023-02-01', 'yyyy-mm-dd')) tablespace tbs1, -- 指定分区p1放在tbs1中 partition p2 values...
ALTER TABLE SALES ADD PARTITION P3 VALUES LESS THAN (TO_DATE('2003-06-01','YYYY-MM-DD')) TABLESPACE SPACE_NAME; 1. 注意:增加一个分区的时候,增加的分区的条件必须大于现有分区的最大值,否则系统将提示ORA-14074 partition bound must collate higher than that of the last partition 错误。 1. 以...
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...
create tablespacePAR;create user par identified by par;grant dba to par; 创建测试表: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 sqlplus par/par create tablelucifer(idnumber(8)PRIMARYKEY,namevarchar2(20)notnull,par_date date)tablespacePAR;comment on table lucifer is'lucifer表';comment ...
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。
Note: you cannot create global indexes for hash partitions or sub partitions The partitioning function of Oracle is powerful. But using it, finding two is not convenient: The first is the existing table, and there is no method that can be directly converted into partition tables. However, Orac...
create table toys ( name varchar2(10), weight number, color varchar2(10), PRIMARY KEY (name) ) partition by list (color) partitions ( partition p_green values ('green'), partition p_red values ('red') ); 在创建分区表之前,是否还必须完成其他一些先决条件?发布...
specified number of partitions. Rows are mapped into partitions based on a hash value of the partitioning key 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 ...