INSERT INTO tablename (id, username, password, level, email)
                VALUES (1, 'John', 'qwerty', 5, 'john@mail.com')
ON CONFLICT (id) DO UPDATE SET
  id=EXCLUDED.id, username=EXCLUDED.username,
  password=EXCLUDED.password, level=EXCLUDED.level,email=EXCLUDED.email

INSERT OR REPLACE INTO tablename (id, user, password, level, email)
                        VALUES (1, 'John', 'qwerty', 5, 'john@mail.com')

INSERT INTO users (id, level)
VALUES (1, 0)
ON CONFLICT (id) DO UPDATE
SET level = users.level + 1;