--
-- 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.
--
-- q4 --
with year_total as (
   select
      c_customer_id customer_id,
      c_first_name customer_first_name,
      c_last_name customer_last_name,
      c_preferred_cust_flag customer_preferred_cust_flag,
      c_birth_country customer_birth_country,
      c_login customer_login,
      c_email_address customer_email_address,
      d_year dyear,
      sum(
         (
            (
               ss_ext_list_price - ss_ext_wholesale_cost - ss_ext_discount_amt
            ) + ss_ext_sales_price
         ) / 2
      ) year_total,
      's' sale_type
   from
      customer,
      store_sales,
      date_dim
   where
      c_customer_sk = ss_customer_sk
      and ss_sold_date_sk = d_date_sk
   group by
      c_customer_id,
      c_first_name,
      c_last_name,
      c_preferred_cust_flag,
      c_birth_country,
      c_login,
      c_email_address,
      d_year
   union
   all
   select
      c_customer_id customer_id,
      c_first_name customer_first_name,
      c_last_name customer_last_name,
      c_preferred_cust_flag customer_preferred_cust_flag,
      c_birth_country customer_birth_country,
      c_login customer_login,
      c_email_address customer_email_address,
      d_year dyear,
      sum(
         (
            (
               (
                  cs_ext_list_price - cs_ext_wholesale_cost - cs_ext_discount_amt
               ) + cs_ext_sales_price
            ) / 2
         )
      ) year_total,
      'c' sale_type
   from
      customer,
      catalog_sales,
      date_dim
   where
      c_customer_sk = cs_bill_customer_sk
      and cs_sold_date_sk = d_date_sk
   group by
      c_customer_id,
      c_first_name,
      c_last_name,
      c_preferred_cust_flag,
      c_birth_country,
      c_login,
      c_email_address,
      d_year
   union
   all
   select
      c_customer_id customer_id,
      c_first_name customer_first_name,
      c_last_name customer_last_name,
      c_preferred_cust_flag customer_preferred_cust_flag,
      c_birth_country customer_birth_country,
      c_login customer_login,
      c_email_address customer_email_address,
      d_year dyear,
      sum(
         (
            (
               (
                  ws_ext_list_price - ws_ext_wholesale_cost - ws_ext_discount_amt
               ) + ws_ext_sales_price
            ) / 2
         )
      ) year_total,
      'w' sale_type
   from
      customer,
      web_sales,
      date_dim
   where
      c_customer_sk = ws_bill_customer_sk
      and ws_sold_date_sk = d_date_sk
   group by
      c_customer_id,
      c_first_name,
      c_last_name,
      c_preferred_cust_flag,
      c_birth_country,
      c_login,
      c_email_address,
      d_year
)
select
   t_s_secyear.customer_id,
   t_s_secyear.customer_first_name,
   t_s_secyear.customer_last_name,
   t_s_secyear.customer_email_address
from
   year_total t_s_firstyear,
   year_total t_s_secyear,
   year_total t_c_firstyear,
   year_total t_c_secyear,
   year_total t_w_firstyear,
   year_total t_w_secyear
where
   t_s_secyear.customer_id = t_s_firstyear.customer_id
   and t_s_firstyear.customer_id = t_c_secyear.customer_id
   and t_s_firstyear.customer_id = t_c_firstyear.customer_id
   and t_s_firstyear.customer_id = t_w_firstyear.customer_id
   and t_s_firstyear.customer_id = t_w_secyear.customer_id
   and t_s_firstyear.sale_type = 's'
   and t_c_firstyear.sale_type = 'c'
   and t_w_firstyear.sale_type = 'w'
   and t_s_secyear.sale_type = 's'
   and t_c_secyear.sale_type = 'c'
   and t_w_secyear.sale_type = 'w'
   and t_s_firstyear.dyear = 2001
   and t_s_secyear.dyear = 2001 + 1
   and t_c_firstyear.dyear = 2001
   and t_c_secyear.dyear = 2001 + 1
   and t_w_firstyear.dyear = 2001
   and t_w_secyear.dyear = 2001 + 1
   and t_s_firstyear.year_total > 0
   and t_c_firstyear.year_total > 0
   and t_w_firstyear.year_total > 0
   and case
      when t_c_firstyear.year_total > 0 then t_c_secyear.year_total / t_c_firstyear.year_total
      else null
   end > case
      when t_s_firstyear.year_total > 0 then t_s_secyear.year_total / t_s_firstyear.year_total
      else null
   end
   and case
      when t_c_firstyear.year_total > 0 then t_c_secyear.year_total / t_c_firstyear.year_total
      else null
   end > case
      when t_w_firstyear.year_total > 0 then t_w_secyear.year_total / t_w_firstyear.year_total
      else null
   end
order by
   t_s_secyear.customer_id,
   t_s_secyear.customer_first_name,
   t_s_secyear.customer_last_name,
   t_s_secyear.customer_email_address
limit
   100;
