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-- @author tungs1 -- @modified 2013-07-28 12:00:00 -- @created 2013-07-28 12:00:00 -- @description groupingfunction groupingfunc118.sql -- @db_name groupingfunction -- @executemode normal -- @tags groupingfunction -- order 1 SELECT SUM(sale.pn) as g1, sale.pn as g2 FROM product, sale WHERE product.pn=sale.pn GROUP BY product.pname,sale.pn ORDER BY g1,g2; g1 | g2 ------+----- 200 | 100 300 | 300 400 | 200 600 | 600 700 | 700 800 | 400 800 | 800 1000 | 500 (8 rows)