--
-- 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.
--

WITH wss AS
(SELECT
    d_week_seq,
    ss_store_sk,
    sum(CASE WHEN (d_day_name = 'Sunday')
      THEN ss_sales_price
        ELSE NULL END) sun_sales,
    sum(CASE WHEN (d_day_name = 'Monday')
      THEN ss_sales_price
        ELSE NULL END) mon_sales,
    sum(CASE WHEN (d_day_name = 'Tuesday')
      THEN ss_sales_price
        ELSE NULL END) tue_sales,
    sum(CASE WHEN (d_day_name = 'Wednesday')
      THEN ss_sales_price
        ELSE NULL END) wed_sales,
    sum(CASE WHEN (d_day_name = 'Thursday')
      THEN ss_sales_price
        ELSE NULL END) thu_sales,
    sum(CASE WHEN (d_day_name = 'Friday')
      THEN ss_sales_price
        ELSE NULL END) fri_sales,
    sum(CASE WHEN (d_day_name = 'Saturday')
      THEN ss_sales_price
        ELSE NULL END) sat_sales
  FROM store_sales, date_dim
  WHERE d_date_sk = ss_sold_date_sk
  GROUP BY d_week_seq, ss_store_sk
)
SELECT
  s_store_name1,
  s_store_id1,
  d_week_seq1,
  sun_sales1 / sun_sales2,
  mon_sales1 / mon_sales2,
  tue_sales1 / tue_sales2,
  wed_sales1 / wed_sales2,
  thu_sales1 / thu_sales2,
  fri_sales1 / fri_sales2,
  sat_sales1 / sat_sales2
FROM
  (SELECT
    s_store_name s_store_name1,
    wss.d_week_seq d_week_seq1,
    s_store_id s_store_id1,
    sun_sales sun_sales1,
    mon_sales mon_sales1,
    tue_sales tue_sales1,
    wed_sales wed_sales1,
    thu_sales thu_sales1,
    fri_sales fri_sales1,
    sat_sales sat_sales1
  FROM wss, store, date_dim d
  WHERE d.d_week_seq = wss.d_week_seq AND
    ss_store_sk = s_store_sk AND
    d_month_seq BETWEEN 1212 AND 1212 + 11) y,
  (SELECT
    s_store_name s_store_name2,
    wss.d_week_seq d_week_seq2,
    s_store_id s_store_id2,
    sun_sales sun_sales2,
    mon_sales mon_sales2,
    tue_sales tue_sales2,
    wed_sales wed_sales2,
    thu_sales thu_sales2,
    fri_sales fri_sales2,
    sat_sales sat_sales2
  FROM wss, store, date_dim d
  WHERE d.d_week_seq = wss.d_week_seq AND
    ss_store_sk = s_store_sk AND
    d_month_seq BETWEEN 1212 + 12 AND 1212 + 23) x
WHERE s_store_id1 = s_store_id2
  AND d_week_seq1 = d_week_seq2 - 52
ORDER BY s_store_name1, s_store_id1, d_week_seq1
LIMIT 100
