--q30.sql--

 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 = 2002
   and wr_returning_addr_sk = ca_address_sk
 group by wr_returning_customer_sk,ca_state)
 select 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,ctr_total_return
 from customer_total_return ctr1, customer_address, customer
 where ctr1.ctr_total_return > (select avg(ctr_total_return)*1.2
 			  from customer_total_return 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,ctr_total_return
 limit 100