select distinct wr_parent from g4_write_B04 where ((INSTR(LOWER(wr_subject7C7Cwr_content), LOWER('%EF%BF%BD%CC%B8%EF%BF%BD%EF%BF%BD%EF%BF%BD'))) ) and (wr_num between '-123' and '9877')

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

error file : /bbs/board.php