| select i_item_id |
| ,i_item_desc |
| ,i_category |
| ,i_class |
| ,i_current_price |
| ,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 ('Electronics', 'Books', 'Women') |
| and ws_sold_date_sk = d_date_sk |
| and d_date between cast('1998-01-06' as date) |
| and (cast('1998-01-06' 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; |
