SELECT COUNT(DISTINCT `wr_parent`) AS `cnt` FROM g5_write_ANI WHERE ((INSTR(wr_subject7C7Cwr_content, '160821')) ) and (wr_num between -15163 and (-15163 + 10000))

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

error file : /bbs/board.php