text: -- ----------------------------------------------------------------- master 库 -----------------------------------------------------------------
  CREATE DATABASE IF NOT EXISTS `tutorial-sharding-master-slave-master`
  DEFAULT CHARACTER SET utf8mb4
  DEFAULT COLLATE utf8mb4_general_ci;
  
  use `tutorial-sharding-master-slave-master`;
  
  DROP TABLE IF EXISTS `user`;
  CREATE TABLE `user` (
    `id` bigint(20) NOT NULL AUTO_INCREMENT,
    `name` varchar(255) DEFAULT NULL,
    PRIMARY KEY (`id`)
  ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
  
  
  -- ----------------------------------------------------------------- slave_0 库 -------------------------------------------------------------------
  
  CREATE DATABASE IF NOT EXISTS `tutorial-sharding-master-slave-slave_0`
  DEFAULT CHARACTER SET utf8mb4
  DEFAULT COLLATE utf8mb4_general_ci;
  
  use `tutorial-sharding-master-slave-slave_0`;
  
  DROP TABLE IF EXISTS `user`;
  CREATE TABLE `user` (
    `id` bigint(20) NOT NULL AUTO_INCREMENT,
    `name` varchar(255) DEFAULT NULL,
    PRIMARY KEY (`id`)
  ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
  
  
  -- ----------------------------------------------------------------- slave_1 库 -------------------------------------------------------------------
  
  CREATE DATABASE IF NOT EXISTS `tutorial-sharding-master-slave-slave_1`
  DEFAULT CHARACTER SET utf8mb4
  DEFAULT COLLATE utf8mb4_general_ci;
  
  use `tutorial-sharding-master-slave-slave_1`;
  
  DROP TABLE IF EXISTS `user`;
  CREATE TABLE `user` (
    `id` bigint(20) NOT NULL AUTO_INCREMENT,
    `name` varchar(255) DEFAULT NULL,
    PRIMARY KEY (`id`)
  ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
  