mysql创建表分区

时间：2021-05-06 18:16:52

MySQL创建表分区

create table erp_bill_index(

    id int primary key auto_increment,

    addtime datetime

);

insert into erp_bill_index(addtime)

values

('2018-02-01 12:00:00'),

('2018-03-01 12:00:00'),

('2018-04-01 12:00:00'),

('2018-05-01 12:00:00'),

('2018-06-01 12:00:00'),

('2018-07-01 12:00:00'),

('2018-08-01 12:00:00'),

('2018-09-01 12:00:00'),

('2018-10-01 12:00:00'),

('2018-11-01 12:00:00'),

('2018-12-01 12:00:00'),

('2019-01-01 12:00:00'),

('2019-02-01 12:00:00'),

('2019-03-01 12:00:00'),

('2019-04-01 12:00:00'),

('2019-05-01 12:00:00'),

('2019-06-01 12:00:00'),

('2019-07-01 12:00:00'),

('2019-08-01 12:00:00'),

('2019-09-01 12:00:00'),

('2019-10-01 12:00:00'),

('2019-11-01 12:00:00'),

('2019-12-01 12:00:00');

alter table erp_bill_index drop primary key;-- 删除主键，在删除主键的时候，这个自增会让该语句执行失败，先取消字段自增，然后执行该语句后，再加上自增

alter table erp_bill_index add primary key(id,addtime);-- 添加主键，（分区要求：分区中使用的字段必须都包含在主键当中）

-- 创建分区(分区要求：分区中使用的字段必须都包含在主键当中)

ALTER TABLE erp_bill_index PARTITION by RANGE(to_days(addtime))

(

  PARTITION p201801 VALUES LESS THAN (to_days('2018-02-01')),

  PARTITION p201802 VALUES LESS THAN (to_days('2018-03-01')),

  PARTITION p201803 VALUES LESS THAN (to_days('2018-04-01')),

  PARTITION p201804 VALUES LESS THAN (to_days('2018-05-01')),

  PARTITION p201805 VALUES LESS THAN (to_days('2018-06-01')),

  PARTITION p201806 VALUES LESS THAN (to_days('2018-07-01')),

  PARTITION p201807 VALUES LESS THAN (to_days('2018-08-01')),

  PARTITION p201808 VALUES LESS THAN (to_days('2018-09-01')),

  PARTITION p201809 VALUES LESS THAN (to_days('2018-10-01')),

  PARTITION p201810 VALUES LESS THAN (to_days('2018-11-01')),

  PARTITION p201811 VALUES LESS THAN (to_days('2018-12-01')),

  PARTITION p201812 VALUES LESS THAN (to_days('2019-01-01')),

  PARTITION p201901 VALUES LESS THAN (to_days('2019-02-01')),

  PARTITION p201902 VALUES LESS THAN (to_days('2019-03-01')),

  PARTITION p201903 VALUES LESS THAN (to_days('2019-04-01')),

  PARTITION p300012 VALUES LESS THAN (9223372036854775807) -- 剩下的放在一个分区中，当需要对这部分进行再次分区的时候，需要先删除该分区，然后再添加多个分区

);

-- 删除分区

ALTER TABLE erp_bill_index DROP PARTITION p300012;

-- 添加新的分区

alter table erp_bill_index add PARTITION

(

    PARTITION p201905 VALUES LESS THAN (to_days('2019-06-01')) ENGINE = InnoDB,

    PARTITION p300012 VALUES LESS THAN (9223372036854775807)

);

mysql执行分析参考：https://blog.csdn.net/weixin_45310179/article/details/99591496

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