-- @@@ START COPYRIGHT @@@
--
-- 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.
--
-- @@@ END COPYRIGHT @@@
obey regr.init;

-- Q5
  SELECT	n_name, 
  		sum(l_extendedprice*(1-l_discount)) as revenue,count(*) rows_in_group
  FROM		customer,
  		orders,
  		lineitem,
  		supplier,
  		nation, 
  		region
  WHERE		c_custkey = o_custkey
    AND    o_orderkey = l_orderkey
    AND    l_suppkey = s_suppkey
    AND    c_nationkey= s_nationkey
    AND    s_nationkey = n_nationkey
    AND    n_regionkey = r_regionkey
    AND    r_name in ('ASIA','AMERICA','EUROPE','MIDDLE EAST','AFRICA')
    AND    o_orderdate >= date '1994-01-01'
    AND    o_orderdate < date '1994-01-01' + interval '3' year
  GROUP BY n_name;
