复古 护眼 海天 深邃 暗黑 默认

数据分片

存储单元操作

REGISTER STORAGE UNIT ds_0 (
    HOST="127.0.0.1",
    PORT=3306,
    DB="ds_1",
    USER="root",
    PASSWORD="root"
),ds_1 (
    HOST="127.0.0.1",
    PORT=3306,
    DB="ds_2",
    USER="root",
    PASSWORD="root"
);

规则操作

  • 创建分片规则
CREATE SHARDING TABLE RULE t_order(
STORAGE_UNITS(ds_0,ds_1),
SHARDING_COLUMN=order_id,
TYPE(NAME="hash_mod",PROPERTIES("sharding-count"="4")),
KEY_GENERATE_STRATEGY(COLUMN=order_id,TYPE(NAME="snowflake"))
);
  • 创建切分表
CREATE TABLE `t_order` (
  `order_id` int NOT NULL,
  `user_id` int NOT NULL,
  `status` varchar(45) DEFAULT NULL,
  PRIMARY KEY (`order_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4
  • 删除切分表
DROP TABLE t_order;
  • 删除分片规则
DROP SHARDING TABLE RULE t_order;
  • 移除数据源
UNREGISTER STORAGE UNIT ds_0, ds_1;
  • 删除分布式数据库
DROP DATABASE foo_db;