SELECT COUNT(DISTINCT `wr_parent`) AS `cnt` FROM g4_write_PDS WHERE ((INSTR(LOWER(wr_subject), LOWER('�뀛�젅@STA79M泥�遺��뾽�옄媛�寃⑹떊遺꾩꽭�긽泥�遺��뾽�옄媛�寃⑹떊遺꾩꽭�긽'))>0) )
Illegal mix of collations (utf8mb3_general_ci,IMPLICIT) and (euckr_korean_ci,COERCIBLE) for operation 'locate' : 1267