select distinct wr_parent from g4_write_B74 where ((INSTR(LOWER(wr_subject7C7Cwr_content), LOWER('%C0%CC%BF%EB'))) ) and (wr_num between '-223' and '9777')

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

error file : /bbs/board.php