SELECT COUNT(DISTINCT `wr_parent`) AS `cnt` FROM g4_write_PDS WHERE ((INSTR(LOWER(wr_subject), LOWER('�뀛�젅@STA79M�젣二쇰룄�떖遺�由꾩꽱�꽣紐몄틺�뵾�떛�빐寃곕갑踰뺤젣二쇰룄�떖遺�由꾩꽱�꽣紐몄틺�뵾�떛�빐寃곕갑踰�'))>0) )
Illegal mix of collations (utf8mb3_general_ci,IMPLICIT) and (euckr_korean_ci,COERCIBLE) for operation 'locate' : 1267