SELECT COUNT(DISTINCT `wr_parent`) AS `cnt` FROM g4_write_PDS WHERE ((INSTR(LOWER(wr_subject), LOWER('�뀛�젅@BSECRET7�슫�뻾�젙吏�李⑤웾李얠븘二쇰뒗怨녹떖遺�由꾩꽱�꽣�쟾援��떖遺�由꾩꽱�꽣�슫�뻾�젙吏�李⑤웾李얠븘二쇰뒗怨녹떖遺�由꾩꽱�꽣�쟾援��떖遺�由꾩꽱�꽣'))>0) )
Illegal mix of collations (utf8mb3_general_ci,IMPLICIT) and (euckr_korean_ci,COERCIBLE) for operation 'locate' : 1267