전용 드라이버 잡아주면 클럭이 상승합니다
48~?
50hz ->51hz 로 변합니다
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SELECT COUNT(DISTINCT `wr_parent`) AS `cnt` FROM g4_write_PDS WHERE ((INSTR(wr_subject, '�����')>0) )
Illegal mix of collations (utf8mb3_general_ci,IMPLICIT) and (euckr_korean_ci,COERCIBLE) for operation 'locate' : 1267