Credits: https://medium.com/@bradford_hamilton/building-an-api-with-graphql-and-go-9350df5c9356 By Bradford Lamson-Scribner
$ CREATE SEQUENCE users_id_seq;
$ CREATE TABLE public.users
(
id integer NOT NULL DEFAULT nextval('users_id_seq'::regclass),
name character varying(50) COLLATE pg_catalog."default" NOT NULL,
age integer NOT NULL,
profession character varying(50) COLLATE pg_catalog."default" NOT NULL,
friendly boolean NOT NULL,
CONSTRAINT users_pkey PRIMARY KEY (id)
);