text: use `isucari`;
  
  DROP TABLE IF EXISTS `configs`;
  CREATE TABLE configs (
      `name` VARCHAR(191) NOT NULL PRIMARY KEY,
      `val` VARCHAR(255) NOT NULL
  ) ENGINE=InnoDB DEFAULT CHARACTER SET utf8mb4;
  
  DROP TABLE IF EXISTS `users`;
  CREATE TABLE `users` (
    `id` bigint NOT NULL AUTO_INCREMENT PRIMARY KEY,
    `account_name` varchar(128) NOT NULL UNIQUE,
    `hashed_password` varbinary(191) NOT NULL,
    `address` varchar(191) NOT NULL,
    `num_sell_items` int unsigned NOT NULL DEFAULT 0,
    `last_bump` datetime NOT NULL DEFAULT '2000-01-01 00:00:00',
    `created_at` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP
  ) ENGINE=InnoDB DEFAULT CHARACTER SET utf8mb4;
  
  DROP TABLE IF EXISTS `items`;
  CREATE TABLE `items` (
    `id` bigint NOT NULL AUTO_INCREMENT PRIMARY KEY,
    `seller_id` bigint NOT NULL,
    `buyer_id` bigint NOT NULL DEFAULT 0,
    `status` enum('on_sale', 'trading', 'sold_out', 'stop', 'cancel') NOT NULL,
    `name` varchar(191) NOT NULL,
    `price` int unsigned NOT NULL,
    `description` text NOT NULL,
    `image_name` varchar(191) NOT NULL,
    `category_id` int unsigned NOT NULL,
    `created_at` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP,
    `updated_at` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP,
    INDEX idx_category_id (`category_id`),
    INDEX idx_seller_id (`seller_id`),
    INDEX idx_buyer_id (`buyer_id`),
    INDEX idx_created_at (`created_at`)
  ) ENGINE=InnoDB DEFAULT CHARACTER SET utf8mb4;
  
  DROP TABLE IF EXISTS `transaction_evidences`;
  CREATE TABLE `transaction_evidences` (
    `id` bigint NOT NULL AUTO_INCREMENT PRIMARY KEY,
    `seller_id` bigint NOT NULL,
    `buyer_id` bigint NOT NULL,
    `status` enum('wait_shipping', 'wait_done', 'done') NOT NULL,
    `item_id` bigint NOT NULL UNIQUE,
    `item_name` varchar(191) NOT NULL,
    `item_price` int unsigned NOT NULL,
    `item_description` text NOT NULL,
    `item_category_id` int unsigned NOT NULL,
    `item_root_category_id` int unsigned NOT NULL,
    `created_at` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP,
    `updated_at` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP,
    INDEX idx_item_id (`item_id`)
  ) ENGINE=InnoDB DEFAULT CHARACTER SET utf8mb4;
  
  DROP TABLE IF EXISTS `shippings`;
  CREATE TABLE `shippings` (
    `transaction_evidence_id` bigint NOT NULL PRIMARY KEY,
    `status` enum('initial', 'wait_pickup', 'shipping', 'done') NOT NULL,
    `item_name` varchar(191) NOT NULL,
    `item_id` bigint NOT NULL,
    `reserve_id` varchar(191) NOT NULL,
    `reserve_time` bigint NOT NULL,
    `to_address` varchar(191) NOT NULL,
    `to_name` varchar(191) NOT NULL,
    `from_address` varchar(191) NOT NULL,
    `from_name` varchar(191) NOT NULL,
    `img_binary` mediumblob NOT NULL,
    `created_at` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP,
    `updated_at` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP
  ) ENGINE=InnoDB DEFAULT CHARACTER SET utf8mb4;
  
  DROP TABLE IF EXISTS `categories`;
  CREATE TABLE `categories` (
    `id` int unsigned NOT NULL AUTO_INCREMENT PRIMARY KEY,
    `parent_id` int unsigned NOT NULL,
    `category_name` varchar(191) NOT NULL
  ) ENGINE=InnoDB DEFAULT CHARACTER SET utf8mb4;
  