text: -- @author tungs1
  -- @modified 2013-07-28 12:00:00
  -- @created 2013-07-28 12:00:00
  -- @description groupingfunction groupingfunc79.sql
  -- @db_name groupingfunction
  -- @executemode normal
  -- @tags groupingfunction
  -- order 1
  SELECT GROUPING(sale.pn) as g1, SUM(sale.pn) as g2 FROM product, sale WHERE product.pn=sale.pn GROUP BY GROUPING SETS (sale.pn, product.pname) ORDER BY g1,g2;
  