create table qrcode
(
  id int AUTO_INCREMENT primary key,
  username varchar(50) not null,
  openid varchar(100) not null,
  alpay varchar(100),
  wxpay varchar(100),
  qqpay varchar(300),
  node varchar(100)
);

alter table qrcode auto_increment=1000

desc qrcode

drop table qrcode

select * from qrcode