DROP TABLE IF EXISTS region_group; -- DROP SEQUENCE IF EXISTS region_group_region_group_id_seq; -- CREATE SEQUENCE region_group_region_group_id_seq; CREATE TABLE region_group ( "region_group_id" int PRIMARY KEY GENERATED BY DEFAULT AS IDENTITY, -- SERIAL PRIMARY KEY "name" varchar(32) NOT NULL, "content" varchar(191) NOT NULL, "created_at" timestamp(0) NOT NULL DEFAULT now() -- PRIMARY KEY("region_group_id") ); SELECT setval('region_group_region_group_id_seq', 2, true); -- last inserted id by sample data