text: create input stream S 
  (num int)
  	 SOURCE KafkaInput
  		 PROPERTIES (groupid = "gidkpi_1_1",topic="agg_1_1",zookeepers="158.1.130.21:2181");
  							
  	create output stream rs 
  		(id int)
  	 SINK ConsoleOutput;
  
  --多级相除
   insert into stream rs select num/1/num/2/num from S;	
  	explain application simple;