--q73.sql--

 select
    c_last_name, c_first_name, c_salutation, c_preferred_cust_flag,
    ss_ticket_number, cnt from
   (select ss_ticket_number, ss_customer_sk, count(*) cnt
    from store_sales,date_dim,store,household_demographics
    where store_sales.ss_sold_date_sk = date_dim.d_date_sk
    and store_sales.ss_store_sk = store.s_store_sk
    and store_sales.ss_hdemo_sk = household_demographics.hd_demo_sk
    and date_dim.d_dom between 1 and 2
    and (household_demographics.hd_buy_potential = '>10000' or
         household_demographics.hd_buy_potential = 'unknown')
    and household_demographics.hd_vehicle_count > 0
    and case when household_demographics.hd_vehicle_count > 0 then
             household_demographics.hd_dep_count/ household_demographics.hd_vehicle_count else null end > 1
    and date_dim.d_year in (1999,1999+1,1999+2)
    and store.s_county in ('Williamson County','Franklin Parish','Bronx County','Orange County')
    group by ss_ticket_number,ss_customer_sk) dj,customer
    where ss_customer_sk = c_customer_sk
      and cnt between 1 and 5
    order by cnt desc, c_last_name asc