select distinct wr_parent from g4_write_board_01_3 where ca_name = '������' and (wr_num between '-3608' and '6392')

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

error file : /gnuboard4/bbs/board.php