Alternative: Using Derived Tables - Advanced SQL Engine - Teradata Database

Example

The following example shows the sales rank of a particular product in a store and its percent contribution to the store sales for the top three products in each store.

   SELECT RT.storeid, RT.prodid, RT.sales,
   RT.rank_sales, RT.sales * 100.0/ST.sum_store_sales
   FROM (SELECT storeid, prodid, sales, RANK(sales) AS rank_sales
   FROM sales_tbl
   GROUP BY storeID
   QUALIFY RANK(sales) <=3) AS RT,
   (SELECT storeID, SUM(sales) AS sum_store_sales
   FROM sales_tbl
   GROUP BY storeID) AS ST
   WHERE RT.storeID = ST.storeID
   ORDER BY RT.storeID, RT.sales;

The results table might look something like the following.