답변 감사드립니다 씨에이치넷님
지금 상태가

admin/board_form.php 파일에서


  <select id="bo_sort_field" name="bo_sort_field">
                    <option value="" <?php echo get_selected($board['bo_sort_field'], ""); ?>>wr_num, wr_reply : 기본</option>
                    <option value="wr_datetime asc" <?php echo get_selected($board['bo_sort_field'], "wr_datetime asc"); ?>>wr_datetime asc : 날짜 이전것 부터</option>
                    <option value="wr_datetime desc" <?php echo get_selected($board['bo_sort_field'], "wr_datetime desc"); ?>>wr_datetime desc : 날짜 최근것 부터</option>
                    <option value="wr_hit asc, wr_num, wr_reply" <?php echo get_selected($board['bo_sort_field'], "wr_hit asc, wr_num, wr_reply"); ?>>wr_hit asc : 조회수 낮은것 부터</option>
                    <option value="wr_hit desc, wr_num, wr_reply" <?php echo get_selected($board['bo_sort_field'], "wr_hit desc, wr_num, wr_reply"); ?>>wr_hit desc : 조회수 높은것 부터</option>
                    <option value="wr_last asc" <?php echo get_selected($board['bo_sort_field'], "wr_last asc"); ?>>wr_last asc : 최근글 이전것 부터</option>
                    <option value="wr_last desc" <?php echo get_selected($board['bo_sort_field'], "wr_last desc"); ?>>wr_last desc : 최근글 최근것 부터</option>
                    <option value="wr_comment asc, wr_num, wr_reply" <?php echo get_selected($board['bo_sort_field'], "wr_comment asc, wr_num, wr_reply"); ?>>wr_comment asc : 댓글수 낮은것 부터</option>
                    <option value="wr_comment desc, wr_num, wr_reply" <?php echo get_selected($board['bo_sort_field'], "wr_comment desc, wr_num, wr_reply"); ?>>wr_comment desc : 댓글수 높은것 부터</option>
                    <option value="wr_good asc, wr_num, wr_reply" <?php echo get_selected($board['bo_sort_field'], "wr_good asc, wr_num, wr_reply"); ?>>wr_good asc : 추천수 낮은것 부터</option>
                    <option value="wr_good desc, wr_num, wr_reply" <?php echo get_selected($board['bo_sort_field'], "wr_good desc, wr_num, wr_reply"); ?>>wr_good desc : 추천수 높은것 부터</option>
                    <option value="wr_nogood asc, wr_num, wr_reply" <?php echo get_selected($board['bo_sort_field'], "wr_nogood asc, wr_num, wr_reply"); ?>>wr_nogood asc : 비추천수 낮은것 부터</option>
                    <option value="wr_nogood desc, wr_num, wr_reply" <?php echo get_selected($board['bo_sort_field'], "wr_nogood desc, wr_num, wr_reply"); ?>>wr_nogood desc : 비추천수 높은것 부터</option>
                    <option value="wr_subject asc, wr_num, wr_reply" <?php echo get_selected($board['bo_sort_field'], "wr_subject asc, wr_num, wr_reply"); ?>>wr_subject asc : 제목 오름차순</option>
                    <option value="wr_subject desc, wr_num, wr_reply" <?php echo get_selected($board['bo_sort_field'], "wr_subject desc, wr_num, wr_reply"); ?>>wr_subject desc : 제목 내림차순</option>
                    <option value="wr_name asc, wr_num, wr_reply" <?php echo get_selected($board['bo_sort_field'], "wr_name asc, wr_num, wr_reply"); ?>>wr_name asc : 글쓴이 오름차순</option>
                    <option value="wr_name desc, wr_num, wr_reply" <?php echo get_selected($board['bo_sort_field'], "wr_name desc, wr_num, wr_reply"); ?>>wr_name desc : 글쓴이 내림차순</option>
                    <option value="ca_name asc, wr_num, wr_reply" <?php echo get_selected($board['bo_sort_field'], "ca_name asc, wr_num, wr_reply"); ?>>ca_name asc : 분류명 오름차순</option>
                    <option value="ca_name desc, wr_num, wr_reply" <?php echo get_selected($board['bo_sort_field'], "ca_name desc, wr_num, wr_reply"); ?>>ca_name desc : 분류명 내림차순</option>




 <option value="wr_datetime desc, rand()" <?php echo get_selected($board['bo_sort_field'], "wr_datetime desc, rand()"); ?>>rand() :최근것 부터 랜덤으로 표시</option>
             



 </select>


마지막부분에 이부분을 추가 시키고 관리자 화면에 들어가서 리스트정렬필드로 바꿔보려했는데 그대로인것같아요.

그런데  다른 간단한 테스트 결과 order by 날짜 desc, rand()  이게 맞다는건 알겠는데
적용이 안되네요. 혹시 다른 문제점이 있나요?