0001 SELECT
0002 i_item_id,
0003 i_item_desc,
0004 i_category,
0005 i_class,
0006 i_current_price,
0007 sum(cs_ext_sales_price) AS itemrevenue,
0008 sum(cs_ext_sales_price) * 100 / sum(sum(cs_ext_sales_price))
0009 OVER
0010 (PARTITION BY i_class) AS revenueratio
0011 FROM catalog_sales, item, date_dim
0012 WHERE cs_item_sk = i_item_sk
0013 AND i_category IN ('Sports', 'Books', 'Home')
0014 AND cs_sold_date_sk = d_date_sk
0015 AND d_date BETWEEN cast('1999-02-22' AS DATE)
0016 AND (cast('1999-02-22' AS DATE) + INTERVAL 30 days)
0017 GROUP BY i_item_id, i_item_desc, i_category, i_class, i_current_price
0018 ORDER BY i_category, i_class, i_item_id, i_item_desc, revenueratio
0019 LIMIT 100
