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-- to you under the Apache License, Version 2.0 (the
-- "License"); you may not use this file except in compliance
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--
--     http://www.apache.org/licenses/LICENSE-2.0
--
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select  i_item_desc
      ,i_category
      ,i_class
      ,i_current_price
      ,i_item_id
      ,sum(ws_ext_sales_price) as itemrevenue
      ,sum(ws_ext_sales_price)*100/sum(sum(ws_ext_sales_price)) over
          (partition by i_class) as revenueratio
from
	web_sales
    	,item
    	,date_dim
where
	ws_item_sk = i_item_sk
  	and i_category in ('Jewelry', 'Sports', 'Books')
  	and ws_sold_date_sk = d_date_sk
	and d_date between cast('2001-01-12' as date)
				and (cast('2001-01-12' as date) + interval '30' day)
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
limit 100