text: create database mp;
  
  use mp;
  
  create table t_user(
      f_id bigint not null primary key auto_increment,
      f_user_name varchar(50) not null,
      f_age int(3) not null,
      f_address varchar(200) not null,
      f_create_time datetime NOT NULL DEFAULT CURRENT_TIMESTAMP,
      f_update_time datetime NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
  );