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select distinct wr_parent from g4_write_chemical_edu where INSTR(ca_name, '뒪겕옒移') and (wr_num between '-1' and '9999')

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

error file : /gnuboard4/bbs/board.php