Question

다른 학위를, 테이블 question_bank 질문을 인출 할이 내 코드

$query = ("('select * from question_bank where test_id = '$id' and question_degree ='$simple' limit $s') union ('select * from question_bank where test_id = '$id' and question_degree ='$medium' limit $m') union ('select * from question_bank where test_id = '$id' and question_degree ='$hard limit $h')"); 

Answer 1

이

을 시도하다

select * from question_bank where test_id='$id' and question_degree in ('$simple', '$medium', '$hard')