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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.
--

--q56.sql--

 with ss as (
 select i_item_id,sum(ss_ext_sales_price) total_sales
 from
 	  store_sales, date_dim, customer_address, item
 where
    i_item_id in (select i_item_id from item where i_color in ('slate','blanched','burnished'))
 and     ss_item_sk              = i_item_sk
 and     ss_sold_date_sk         = d_date_sk
 and     d_year                  = 2001
 and     d_moy                   = 2
 and     ss_addr_sk              = ca_address_sk
 and     ca_gmt_offset           = -5
 group by i_item_id),
 cs as (
 select i_item_id,sum(cs_ext_sales_price) total_sales
 from
 	  catalog_sales, date_dim, customer_address, item
 where
    i_item_id in (select i_item_id from item where i_color in ('slate','blanched','burnished'))
 and     cs_item_sk              = i_item_sk
 and     cs_sold_date_sk         = d_date_sk
 and     d_year                  = 2001
 and     d_moy                   = 2
 and     cs_bill_addr_sk         = ca_address_sk
 and     ca_gmt_offset           = -5
 group by i_item_id),
 ws as (
 select i_item_id,sum(ws_ext_sales_price) total_sales
 from
 	  web_sales, date_dim, customer_address, item
 where
    i_item_id in (select i_item_id from item where i_color in ('slate','blanched','burnished'))
 and     ws_item_sk              = i_item_sk
 and     ws_sold_date_sk         = d_date_sk
 and     d_year                  = 2001 
 and     d_moy                   = 2
 and     ws_bill_addr_sk         = ca_address_sk
 and     ca_gmt_offset           = -5
 group by i_item_id)
 select i_item_id ,sum(total_sales) total_sales
 from  (select * from ss
        union all
        select * from cs
        union all
        select * from ws) tmp1
 group by i_item_id
 order by total_sales
 limit 100
            
