Sharding

Resource Operation

• Configure data source information

ADD RESOURCE ds_0 (
HOST=127.0.0.1,
PORT=3306,
DB=ds_1,
USER=root,
PASSWORD=root
);
ADD RESOURCE ds_1 (
HOST=127.0.0.1,
PORT=3306,
DB=ds_2,
USER=root,
PASSWORD=root
);

Rule Operation

• Create sharding rule

CREATE SHARDING TABLE RULE t_order(
RESOURCES(ds_0,ds_1),
SHARDING_COLUMN=order_id,
TYPE(NAME=hash_mod,PROPERTIES("sharding-count"=4)),
GENERATED_KEY(COLUMN=order_id,TYPE(NAME=snowflake,PROPERTIES("worker-id"=123)))
);

• Create sharding table

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

• Drop sharding table

DROP TABLE t_order;

• Drop sharding rule

DROP SHARDING TABLE RULE t_order;

• Drop resource

DROP RESOURCE ds_0, ds_1;

• Drop distributed database

DROP DATABASE foo_db;