text: 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
  