Oracle数据库表分区

表分区

数据采集的表结构，打算按月分表，按天分区。这样在查询的时候会大大的减少工作量。

按月分区分表

create table fq_test (
id number,
name varchar2(32),
create_time date)
partition by range (create_time) interval (numtoyMinterval (1,'MONTH'))
(
partition p_2024_07_12 values less than (to_date('2024-07-12', 'yyyy-mm-dd'))
 
);

按照天分区分表：

create table fq_test (
id number,
name varchar2(32),
create_time date)
partition by range (create_time) interval (NUMTODSINTERVAL  (1,'day'))
(
partition p_2024_07_12 values less than (to_date('2024-07-12', 'yyyy-mm-dd'))
);

按照指定的数据分区

如果不存在，就创建一个新的分区

select table_name, partition_name ,HIGH_VALUE from user_tab_partitions where TABLE_NAME='ENMOTECH'
 
 
CREATE TABLE enmotech (
  PartID	integer		not null,
  CretTm	date		not null,
  PartCD	varchar2(2)	not null
) partition by list (partcd) automatic (
  partition pBJ values ('a'),
  partition pCD values ('b'),
  partition pGZ values ('c')
);