SELECT COUNT(DISTINCT `wr_parent`) AS `cnt` FROM g4_write_deep WHERE ((INSTR(LOWER(wr_subject), LOWER('OP�씤�꽣�꽬愿묎퀬y�뀛�젅'))>0) and (INSTR(LOWER(wr_subject), LOWER('uy454OP����뻾�윃둖P諛붿씠�윺���搔켖P�씤�꽣�꽬愿묎퀬�깮OP援ш��臾몄쓽拈OP�몚OP�씤�꽣�꽬愿묎퀬�뭲OP�븕OP�씤�꽣�꽬愿묎퀬X'))>0) )
Illegal mix of collations (utf8_general_ci,IMPLICIT) and (euckr_korean_ci,COERCIBLE) for operation 'locate' : 1267