@석성산(25.08.02)
SELECT COUNT(DISTINCT `wr_parent`) AS `cnt` FROM g4_write_column WHERE ((INSTR(wr_subject, 'ì¹´ì¹´�¤ï¿½0ï¿�')>0) and (INSTR(wr_subject, '�¤ï¿½0��ï¿�0ï¿�0��')>0) )
Illegal mix of collations (utf8mb3_general_ci,IMPLICIT) and (euckr_korean_ci,COERCIBLE) for operation 'locate' : 1267
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