select wr_id, wr_subject from g4_write_B74 where wr_is_comment = 0 and wr_num = '-172' and wr_reply < '' and ((INSTR(LOWER(wr_subject7C7Cwr_content), LOWER('%ED%8A%B9%EB%B3%84%ED%95%9C%EC%A0%95%EC%8A%B9%EC%9D%B8'))) ) order by wr_num desc, wr_reply desc limit 1

1054 : Unknown column 'wr_subject7C7Cwr_content' in 'where clause'

error file : /bbs/board.php