法一:
CREATE TABLE customers
(
customerid SERIAL primary key ,
companyname character varying,
contactname character varying,
phone character varying,
country character varying
)
法二
CREATE SEQUENCE event_id_seq
START WITH 1
INCREMENT BY 1 NO MINVALUE NO MAXVALUE
CACHE 1;
alter table event alter column id set default nextval(‘event_id_seq‘);
时间: 2024-11-03 21:47:47