CREATE TABLE customers (
  id         serial PRIMARY KEY,
  full_name  text NOT NULL,
  email      text NOT NULL,
  phone      text NOT NULL,
  city       text NOT NULL,
  plan       text NOT NULL,
  mrr_cents  integer NOT NULL
);

INSERT INTO customers (full_name, email, phone, city, plan, mrr_cents) VALUES
  ('Ada Lovelace',    'ada@example.com',    '+1 250 555 0101', 'Victoria',  'pro',        9900),
  ('Grace Hopper',    'grace@example.com',  '+1 250 555 0102', 'Nanaimo',   'team',      29900),
  ('Alan Turing',     'alan@example.com',   '+1 604 555 0103', 'Vancouver', 'free',          0),
  ('Katherine Johnson','kj@example.com',    '+1 250 555 0104', 'Sidney',    'pro',        9900),
  ('Edsger Dijkstra', 'edsger@example.com', '+1 778 555 0105', 'Victoria',  'enterprise',99900);