text: create table players (
      pid int not null auto_increment primary key,
      status enum('active', 'inactive') not null default 'active',
      num int,
      name varchar(255)
  );
  create table bands (
      bid int not null auto_increment primary key,
      name varchar(255),
      description varchar(255)
  );
  create table players_to_bands(
      pid int not null,
      bid int not null,
      primary key(pid, bid)
  );
  create table rounds (
      rid int not null auto_increment primary key,
      bid int not null,
      name varchar(100),
      begins date,
      ends date
  );
  create table players_to_rounds (
      pid int not null,
      rid int not null,
      primary key(pid, rid)
  );
  create table results (
      pw int not null,
      pb int not null,
      rid int not null,
      result char(2),
      sgf varchar(255),
      report_date datetime,
      points int,
      primary key(pw, pb, rid)
  );