q54.sql

WITH my_customers AS (
  SELECT DISTINCT
    c_customer_sk,
    c_current_addr_sk
  FROM
    (SELECT
       cs_sold_date_sk sold_date_sk,
       cs_bill_customer_sk customer_sk,
       cs_item_sk item_sk
     FROM catalog_sales
     UNION ALL
     SELECT
       ws_sold_date_sk sold_date_sk,
       ws_bill_customer_sk customer_sk,
       ws_item_sk item_sk
     FROM web_sales
    ) cs_or_ws_sales,
    item,
    date_dim,
    customer
  WHERE sold_date_sk = d_date_sk
    AND item_sk = i_item_sk
    AND i_category = 'Women'
    AND i_class = 'maternity'
    AND c_customer_sk = cs_or_ws_sales.customer_sk
    AND d_moy = 12
    AND d_year = 1998
)
  , my_revenue AS (
  SELECT
    c_customer_sk,
    sum(ss_ext_sales_price) AS revenue
  FROM my_customers,
    store_sales,
    customer_address,
    store,
    date_dim
  WHERE c_current_addr_sk = ca_address_sk
    AND ca_county = s_county
    AND ca_state = s_state
    AND ss_sold_date_sk = d_date_sk
    AND c_customer_sk = ss_customer_sk
    AND d_month_seq BETWEEN (SELECT DISTINCT d_month_seq + 1
  FROM date_dim
  WHERE d_year = 1998 AND d_moy = 12)
  AND (SELECT DISTINCT d_month_seq + 3
  FROM date_dim
  WHERE d_year = 1998 AND d_moy = 12)
  GROUP BY c_customer_sk
)
  , segments AS
(SELECT cast((revenue / 50) AS INTEGER) AS segment
  FROM my_revenue)
SELECT
  segment,
  count(*) AS num_customers,
  segment * 50 AS segment_base
FROM segments
GROUP BY segment
ORDER BY segment, num_customers
LIMIT 100;