통기타에 문제 생기면 누구한테 물어 봐야 해?

select distinct wr_parent from g4_write_tong_qna2 where ca_name = '구매상담' and (wr_num between '-13077' and '-3077') order by wr_num, wr_reply limit 0, 50

3065 : Expression #1 of ORDER BY clause is not in SELECT list, references column 'tongguitar.g4_write_tong_qna2.wr_num' which is not in SELECT list; this is incompatible with DISTINCT

error file : /bbs/board.php