select distinct wr_parent from g4_write_free where ((INSTR(LOWER(wr_subject), LOWER('텔레@BSECRET7회사진급조작비밀보장회사진급조작비밀보장'))) ) and (wr_num between '' and '10000')

1267 : Illegal mix of collations (utf8_general_ci,IMPLICIT) and (euckr_korean_ci,COERCIBLE) for operation 'instr'

error file : /bbs/board.php