CREATE TABLE cities
(
    id              uuid                     DEFAULT gen_random_uuid() NOT NULL,
    name            varchar(50)                                        NOT NULL,
    postal_code     varchar(10),
    created_at      timestamp WITH TIME ZONE DEFAULT NOW()             NOT NULL,
    updated_at      timestamp WITH TIME ZONE DEFAULT NOW()             NOT NULL,
    sa_orm_sentinel uuid
);

CREATE UNIQUE INDEX cities_id_uindex
    ON cities (id);

CREATE TABLE users
(
    id              uuid                     DEFAULT gen_random_uuid() NOT NULL,
    first_name      varchar(50),
    last_name       varchar(50),
    city_id         uuid
        CONSTRAINT users_cities_id_fk
            REFERENCES cities (),
    created_at      timestamp WITH TIME ZONE DEFAULT NOW()             NOT NULL,
    updated_at      timestamp WITH TIME ZONE DEFAULT NOW()             NOT NULL,
    sa_orm_sentinel uuid
);

CREATE UNIQUE INDEX users_id_uindex
    ON users (id);