text: CREATE TABLE shops (
      `id` BIGINT NOT NULL AUTO_INCREMENT,
  
      `mobile_id` BIGINT NOT NULL UNIQUE,
  
      FOREIGN KEY (mobile_id) REFERENCES mobiles(id),
  
      /* Timestamps */
      `created_at` DATETIME DEFAULT CURRENT_TIMESTAMP,
      `updated_at` TIMESTAMP NOT NULL DEFAULT NOW() ON UPDATE NOW(),
  
      PRIMARY KEY (id)
  );
  
  CREATE TABLE shop_object (
      `id` BIGINT NOT NULL AUTO_INCREMENT,
  
      `shop_id` BIGINT NOT NULL,
      `object_id` BIGINT NOT NULL,
      `price` BIGINT NOT NULL,
  
      /* Timestamps */
      `created_at` DATETIME DEFAULT CURRENT_TIMESTAMP,
      `updated_at` TIMESTAMP NOT NULL DEFAULT NOW() ON UPDATE NOW(),
  
      PRIMARY KEY (id),
      FOREIGN KEY (shop_id) REFERENCES shops(id) ON DELETE CASCADE,
      FOREIGN KEY (`object_id`) REFERENCES objects(id) ON DELETE CASCADE
  );
  
  INSERT INTO shops (id, mobile_id) VALUES (1, 3);
  
  INSERT INTO shop_object (id, shop_id, `object_id`, price) VALUES (7, 1, 7, 1000);
  INSERT INTO shop_object (id, shop_id, `object_id`, price) VALUES (6, 1, 12, 250);
  INSERT INTO shop_object (id, shop_id, `object_id`, price) VALUES (5, 1, 6, 200);
  INSERT INTO shop_object (id, shop_id, `object_id`, price) VALUES (4, 1, 9, 150);
  INSERT INTO shop_object (id, shop_id, `object_id`, price) VALUES (3, 1, 8, 100);
  INSERT INTO shop_object (id, shop_id, `object_id`, price) VALUES (2, 1, 10, 50);
  INSERT INTO shop_object (id, shop_id, `object_id`, price) VALUES (1, 1, 5, 10);