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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,
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--

--q91.sql--

 select
        cc_call_center_id Call_Center, cc_name Call_Center_Name, cc_manager Manager,
        sum(cr_net_loss) Returns_Loss
 from
        call_center, catalog_returns, date_dim, customer, customer_address,
        customer_demographics, household_demographics
 where
        cr_call_center_sk        = cc_call_center_sk
 and    cr_returned_date_sk      = d_date_sk
 and    cr_returning_customer_sk = c_customer_sk
 and    cd_demo_sk               = c_current_cdemo_sk
 and    hd_demo_sk               = c_current_hdemo_sk
 and    ca_address_sk            = c_current_addr_sk
 and    d_year                   = 1998
 and    d_moy                    = 11
 and    ( (cd_marital_status     = 'M' and cd_education_status = 'Unknown')
        or(cd_marital_status     = 'W' and cd_education_status = 'Advanced Degree'))
 and    hd_buy_potential like 'Unknown%'
 and    ca_gmt_offset            = -7
 group by cc_call_center_id,cc_name,cc_manager,cd_marital_status,cd_education_status
 order by sum(cr_net_loss) desc
            
