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-- regarding copyright ownership.  The ASF licenses this file
-- to you under the Apache License, Version 2.0 (the
-- "License"); you may not use this file except in compliance
-- with the License.  You may obtain a copy of the License at
--
--     http://www.apache.org/licenses/LICENSE-2.0
--
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-- distributed under the License is distributed on an "AS IS" BASIS,
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select  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 ('Jewelry', 'Sports', 'Books')
   and cs_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