SELECT COUNT(DISTINCT `wr_parent`) AS `cnt` FROM g5_write_0204 WHERE ((INSTR(LOWER(wr_subject7C7Cwr_content), LOWER('EB85B8ECB69C'))) ) and (wr_num between -804 and (-804 + 1000))

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

error file : /bbs/board.php