Example: Specifying GROUP BY Using an Ordered Analytic Function - Analytics Database - Teradata Vantage

The following statement specifies a GROUP BY clause with an ordered analytical function to generate report breaks where the function resets and computes a new value for the next grouping.

The example groups all items into percentile by profitability for each store and then returns only the items of interest, which, in this case, are the lowest percentile for each store.

     SELECT store, item, profit, QUANTILE(100, profit) AS percentile
     FROM (SELECT items.item, SUM(sales) -
                  (COUNT(sales)*items.item_cost) AS profit
           FROM daily_sales, items
           WHERE daily_sales.item = items.item
           GROUP BY items.item,items.itemcost) AS item_profit
     GROUP BY store, item, profit, percentile
     QUALIFY percentile = 99;

The result of this query looks like the following table: