id   firstname   gender
1    Aaron       m
2    Adam        m
3    Alan        m
etc...

SELECT id, firstname FROM firstname WHERE id = round(1 + (rand() * 199));

id   firstname
43   Jason

-- First Name --
drop table if exists firstname;

  CREATE TABLE firstname (
  id INT NOT NULL,
  firstname VARCHAR(20) NOT NULL,
  gender VARCHAR(1) NOT NULL,
  PRIMARY KEY (id),
  UNIQUE (firstname)
  );

  INSERT INTO firstname
  (id,firstname,gender)
  VALUES
  (1,"Aaron","m"),
(2,"Adam","m"),
(3,"Alan","m"),
(4,"Albert","m"),
(5,"Alexander","m"),
(6,"Andrew","m"),
(7,"Anthony","m"),
(8,"Arthur","m"),
(9,"Austin","m"),
(10,"Benjamin","m"),
(11,"Billy","m"),
(12,"Bobby","m"),
(13,"Brandon","m"),
(14,"Brian","m"),
(15,"Bruce","m"),
(16,"Bryan","m"),
(17,"Carl","m"),
(18,"Charles","m"),
(19,"Christian","m"),
(20,"Christopher","m");