--q67.sql--

 select * from
     (select i_category, i_class, i_brand, i_product_name, d_year, d_qoy, d_moy, s_store_id,
             sumsales, rank() over (partition by i_category order by sumsales desc) rk
      from
         (select i_category, i_class, i_brand, i_product_name, d_year, d_qoy, d_moy,
                 s_store_id, sum(coalesce(ss_sales_price*ss_quantity,0)) sumsales
          from store_sales, date_dim, store, item
        where  ss_sold_date_sk=d_date_sk
           and ss_item_sk=i_item_sk
           and ss_store_sk = s_store_sk
           and d_month_seq between 1200 and 1200+11
        group by rollup(i_category, i_class, i_brand, i_product_name, d_year, d_qoy,
                        d_moy,s_store_id))dw1) dw2
 where rk <= 100
 order by
   i_category, i_class, i_brand, i_product_name, d_year,
   d_qoy, d_moy, s_store_id, sumsales, rk
 limit 100