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-- Licensed to the Apache Software Foundation (ASF) under one or more
-- contributor license agreements.  See the NOTICE file distributed with
-- this work for additional information 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
--
-- Unless required by applicable law or agreed to in writing, software
-- distributed under the License is distributed on an "AS IS" BASIS,
-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-- See the License for the specific language governing permissions and
-- limitations under the License.
--

--q23b.sql--


 with frequent_ss_items as
 (select substr(i_item_desc,1,30) itemdesc,i_item_sk item_sk,d_date solddate,count(*) cnt
  from store_sales, date_dim, item
  where ss_sold_date_sk = d_date_sk
    and ss_item_sk = i_item_sk
    and d_year in (2000, 2000+1, 2000+2,2000+3)
  group by substr(i_item_desc,1,30),i_item_sk,d_date
  having count(*) > 4),
 max_store_sales as
 (select max(csales) tpcds_cmax
  from (select c_customer_sk,sum(ss_quantity*ss_sales_price) csales
        from store_sales, customer, date_dim
        where ss_customer_sk = c_customer_sk
         and ss_sold_date_sk = d_date_sk
         and d_year in (2000, 2000+1, 2000+2,2000+3)
        group by c_customer_sk) x),
 best_ss_customer as
 (select c_customer_sk,sum(ss_quantity*ss_sales_price) ssales
  from store_sales
      ,customer
  where ss_customer_sk = c_customer_sk
  group by c_customer_sk
  having sum(ss_quantity*ss_sales_price) > (95/100.0) *
    (select * from max_store_sales))
 select c_last_name,c_first_name,sales
 from ((select c_last_name,c_first_name,sum(cs_quantity*cs_list_price) sales
        from catalog_sales, customer, date_dim
        where d_year = 2000
         and d_moy = 2
         and cs_sold_date_sk = d_date_sk
         and cs_item_sk in (select item_sk from frequent_ss_items)
         and cs_bill_customer_sk in (select c_customer_sk from best_ss_customer)
         and cs_bill_customer_sk = c_customer_sk
       group by c_last_name,c_first_name)
      union all
      (select c_last_name,c_first_name,sum(ws_quantity*ws_list_price) sales
       from web_sales, customer, date_dim
       where d_year = 2000
         and d_moy = 2
         and ws_sold_date_sk = d_date_sk
         and ws_item_sk in (select item_sk from frequent_ss_items)
         and ws_bill_customer_sk in (select c_customer_sk from best_ss_customer)
         and ws_bill_customer_sk = c_customer_sk
       group by c_last_name,c_first_name)) y
     order by c_last_name,c_first_name,sales
 limit 100
            
