-- @author tungs1
-- @modified 2013-07-28 12:00:00
-- @created 2013-07-28 12:00:00
-- @description groupingfunction groupingfunc114.sql
-- @db_name groupingfunction
-- @executemode normal
-- @tags groupingfunction
-- order 1
SELECT SUM(sale.pn) as g1, GROUPING(sale.pn) + 1 as g2 FROM product, sale WHERE product.pn=sale.pn GROUP BY ROLLUP((sale.pn),(product.pname),(sale.pn)) ORDER BY g1,g2;
  g1  | g2 
------+----
  200 |  1
  200 |  1
  200 |  1
  300 |  1
  300 |  1
  300 |  1
  400 |  1
  400 |  1
  400 |  1
  600 |  1
  600 |  1
  600 |  1
  700 |  1
  700 |  1
  700 |  1
  800 |  1
  800 |  1
  800 |  1
  800 |  1
  800 |  1
  800 |  1
 1000 |  1
 1000 |  1
 1000 |  1
 4800 |  2
(25 rows)