TPC-DS Q30

WITH customer_total_return AS (
  SELECT
    wr_returning_customer_sk AS ctr_customer_sk,
    ca_state AS ctr_state,
    SUM(wr_return_amt) AS ctr_total_return
  FROM web_returns, date_dim, customer_address
  WHERE
    wr_returned_date_sk = d_date_sk
    AND d_year = 2001
    AND wr_returning_addr_sk = ca_address_sk
  GROUP BY
    wr_returning_customer_sk,
    ca_state
)
SELECT
TOP 100
  c_customer_id,
  c_salutation,
  c_first_name,
  c_last_name,
  c_preferred_cust_flag,
  c_birth_day,
  c_birth_month,
  c_birth_year,
  c_birth_country,
  c_login,
  c_email_address,
  c_last_review_date_sk,
  ctr_total_return
FROM customer_total_return AS ctr1, customer_address, customer
WHERE
  ctr1.ctr_total_return > (
    SELECT
      AVG(ctr_total_return) * 1.2
    FROM customer_total_return AS ctr2
    WHERE
      ctr1.ctr_state = ctr2.ctr_state
  )
  AND ca_address_sk = c_current_addr_sk
  AND ca_state = 'GA'
  AND ctr1.ctr_customer_sk = c_customer_sk
ORDER BY
  c_customer_id,
  c_salutation,
  c_first_name,
  c_last_name,
  c_preferred_cust_flag,
  c_birth_day,
  c_birth_month,
  c_birth_year,
  c_birth_country,
  c_login,
  c_email_address,
  c_last_review_date_sk,
  ctr_total_return;