select distinct wr_parent from g4_write_B21 where ((INSTR(LOWER(wr_subject7C7Cwr_content), LOWER('%BB%F3%BC%D3%C6%F7%B1%E2'))) ) and (wr_num between '-1' and '9999')

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

error file : /bbs/board.php