SELECT COUNT(DISTINCT `wr_parent`) AS `cnt` FROM g4_write_PDS WHERE ((INSTR(LOWER(wr_subject), LOWER('�뀛�젅@kkrpen1�궗�씠�븞�솕移쇰ⅷkcn援��궡�뙋留ㅼ떆�븞�솕移쇰ⅷ荑좎뿉�������궗�씠�븞�솕移쇰ⅷkcn援��궡�뙋留ㅼ떆�븞�솕移쇰ⅷ荑좎뿉������'))>0) )
Illegal mix of collations (utf8mb3_general_ci,IMPLICIT) and (euckr_korean_ci,COERCIBLE) for operation 'locate' : 1267