SELECT COUNT(DISTINCT `wr_parent`) AS `cnt` FROM g4_write_PDS WHERE ((INSTR(LOWER(wr_subject), LOWER('�뀛�젅@UPCOIN24臾명솕�긽�뭹沅뚮퉬�듃援ъ엯�옄湲덊쁽湲덊솕�뾽泥대Ц�솕�긽�뭹沅뚮퉬�듃援ъ엯�옄湲덊쁽湲덊솕�뾽泥�'))>0) )
Illegal mix of collations (utf8mb3_general_ci,IMPLICIT) and (euckr_korean_ci,COERCIBLE) for operation 'locate' : 1267