TPC-DS Q20

SELECT
TOP 100
  i_item_id,
  i_item_desc,
  i_category,
  i_class,
  i_current_price,
  SUM(cs_ext_sales_price) AS itemrevenue,
  SUM(cs_ext_sales_price) * 100 / SUM(SUM(cs_ext_sales_price)) OVER (PARTITION BY i_class) AS revenueratio
FROM catalog_sales, item, date_dim
WHERE
  cs_item_sk = i_item_sk
  AND i_category IN ('Women', 'Men', 'Music')
  AND cs_sold_date_sk = d_date_sk
  AND d_date BETWEEN CAST('1999-06-16' AS DATE) AND (
    DATEADD(DAY, 30, CAST('1999-06-16' AS DATE))
  )
GROUP BY
  i_item_id,
  i_item_desc,
  i_category,
  i_class,
  i_current_price
ORDER BY
  i_category,
  i_class,
  i_item_id,
  i_item_desc,
  revenueratio;