'(select 1 and row(1,1)>(select count(*),concat(concat(CHAR(52),CHAR(67),CHAR(117),CHAR(111),CHAR(112),CHAR(55),CHAR(83),CHAR(70),CHAR(78),CHAR(105),CHAR(54)),floor(rand()*2))x from (select 1 union select 2)a group by x limit 1))'- 30/11/-0001