SELECT COUNT(DISTINCT `wr_parent`) AS `cnt` FROM g4_write_deep WHERE ((INSTR(wr_subject, '�삤�룞�룞議곌굔留뚮궓�궪')>0) and (INSTR(LOWER(wr_subject), LOWER('O6O�뀫9OO�뀫OO74'))>0) and (INSTR(LOWER(wr_subject), LOWER('�쐶寃쎈룞議곌굔留뚮궓promptly臾몃옒�룞�룿�똿�룿�꽮�궪�룊�룞�룿�똿�룿�꽮�떊諛⑸룞議곌굔留뚮궓hand'))>0) and (INSTR(wr_subject, '�쓽�꽦議곌굔留뚮궓')>0) and (INSTR(LOWER(wr_subject), LOWER('�븘�셼諛⑸같�룞�룿�똿�룿�꽮know'))>0) )
Illegal mix of collations (utf8_general_ci,IMPLICIT) and (euckr_korean_ci,COERCIBLE) for operation 'locate' : 1267