select distinct wr_parent from g4_write_video where ca_name = '영어미술' and (wr_num between '-2' and '9998') order by wr_num, wr_reply limit 0, 15

3065 : Expression #1 of ORDER BY clause is not in SELECT list, references column 'keagorg.g4_write_video.wr_num' which is not in SELECT list; this is incompatible with DISTINCT

error file : /bbs/board.php