create table teams (
  id serial primary key,
  name varchar(100),
  description text,
  credits integer,
  created_at timestamp,
  activated_at date
);
comment on column teams.credits is 'Remaining usage credits';

create table users (
  id serial primary key,
  team_id int not null,
  email varchar(100),
  password varchar(60),
  constraint fk_team_id
    foreign key (team_id)
    references teams (id)
);

-- One table without a primary key
create table page_visits (
  request_path varchar(100),
  user_agent varchar(200),
  created_at timestamp
);

-- One table in a schema
create schema test;
create table test.test (
    id serial primary key,
    number int not null
);