유저 도메인에 생성시각 및 마지막 로그인 날짜 기록하기

[dongwooklee96]

CREATE TABLE accounts (
                          user_id serial PRIMARY KEY,
                          username VARCHAR ( 50 ) UNIQUE NOT NULL,
                          password VARCHAR ( 50 ) NOT NULL,
                          email VARCHAR ( 255 ) UNIQUE NOT NULL,
                          created_on TIMESTAMP NOT NULL,
                          last_login TIMESTAMP
);