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select distinct wr_parent from g4_write_photo_academy_2017 where ca_name = '김포시 5차' and (wr_num between '-97' and '9903')
1267 : Illegal mix of collations (utf8_general_ci,IMPLICIT) and (euckr_korean_ci,COERCIBLE) for operation '='
error file : /bbs/board.php