text: TRUNCATE banner;
  TRUNCATE consumer;
  TRUNCATE dining_hall;
  TRUNCATE feedback;
  TRUNCATE food;
  TRUNCATE food_category;
  TRUNCATE global_notice;
  TRUNCATE operator;
  DROP TABLE operator_id_seq;
  TRUNCATE `order`;
  TRUNCATE ordered_food;
  TRUNCATE recommended_food;
  TRUNCATE stall;
  DROP TABLE stall_id_seq;
  
  -- 运营方 ID 序列表
  CREATE TABLE operator_id_seq
  (
    id INT PRIMARY KEY AUTO_INCREMENT
  );
  
  -- 商户 ID 序列表
  CREATE TABLE stall_id_seq
  (
    id INT PRIMARY KEY AUTO_INCREMENT
  );
  
  -- 运营账户
  -- 密码为 admin
  INSERT INTO operator (username, salt, pwd_hash, role)
  VALUES ('admin', 'nC4Ci9lseC8N780aHjC8BZbeCQ54uOln',
          '9e69680d4b60eea7b825811b0f32e8d75bcd72fdbe659656e8855eecae1c0edb', 1);
  