text: insert overwrite table query22
  select i_product_name
       , i_brand
       , i_class
       , i_category
       , avg(inv_quantity_on_hand) qoh
  from inventory
     , date_dim
     , item
  where inv_date_sk = d_date_sk
    and inv_item_sk = i_item_sk
    and d_month_seq between 1200 and 1200 + 11
  group by rollup (i_product_name
         , i_brand
         , i_class
         , i_category)
  order by qoh, i_product_name, i_brand, i_class, i_category
  limit 100;
  