备份，留着用，记不住这么多东西

-- 创建序列
create sequence seq_user_camera_version increment by 1 minvalue 1 no maxvalue start with 1;

-- 建表，并用上面的序列作为主键自增序列
CREATE TABLE public.user_camera_version (
    id int4 NOT NULL DEFAULT nextval('seq_user_camera_version'::regclass),
    user_id int4 NULL,
    user_type varchar(1) NULL,
    hardware_version varchar(100) NULL,
    software_version varchar(100) NULL,
    modify_date timestamp NULL,
    CONSTRAINT user_camera_version_pkey PRIMARY KEY (id)
)
WITH (
    OIDS=FALSE
) ;