| WITH year_total AS ( |
| SELECT |
| c_customer_id customer_id, |
| c_first_name customer_first_name, |
| c_last_name customer_last_name, |
| d_year AS year, |
| sum(ss_net_paid) year_total, |
| 's' sale_type |
| FROM |
| customer, store_sales, date_dim |
| WHERE c_customer_sk = ss_customer_sk |
| AND ss_sold_date_sk = d_date_sk |
| AND d_year IN (2001, 2001 + 1) |
| GROUP BY |
| c_customer_id, c_first_name, c_last_name, d_year |
| UNION ALL |
| SELECT |
| c_customer_id customer_id, |
| c_first_name customer_first_name, |
| c_last_name customer_last_name, |
| d_year AS year, |
| sum(ws_net_paid) year_total, |
| 'w' sale_type |
| FROM |
| customer, web_sales, date_dim |
| WHERE c_customer_sk = ws_bill_customer_sk |
| AND ws_sold_date_sk = d_date_sk |
| AND d_year IN (2001, 2001 + 1) |
| GROUP BY |
| c_customer_id, c_first_name, c_last_name, d_year) |
| SELECT |
| t_s_secyear.customer_id, |
| t_s_secyear.customer_first_name, |
| t_s_secyear.customer_last_name |
| FROM |
| year_total t_s_firstyear, year_total t_s_secyear, |
| year_total t_w_firstyear, year_total t_w_secyear |
| WHERE t_s_secyear.customer_id = t_s_firstyear.customer_id |
| AND t_s_firstyear.customer_id = t_w_secyear.customer_id |
| AND t_s_firstyear.customer_id = t_w_firstyear.customer_id |
| AND t_s_firstyear.sale_type = 's' |
| AND t_w_firstyear.sale_type = 'w' |
| AND t_s_secyear.sale_type = 's' |
| AND t_w_secyear.sale_type = 'w' |
| AND t_s_firstyear.year = 2001 |
| AND t_s_secyear.year = 2001 + 1 |
| AND t_w_firstyear.year = 2001 |
| AND t_w_secyear.year = 2001 + 1 |
| AND t_s_firstyear.year_total > 0 |
| AND t_w_firstyear.year_total > 0 |
| AND CASE WHEN t_w_firstyear.year_total > 0 |
| THEN t_w_secyear.year_total / t_w_firstyear.year_total |
| ELSE NULL END |
| > CASE WHEN t_s_firstyear.year_total > 0 |
| THEN t_s_secyear.year_total / t_s_firstyear.year_total |
| ELSE NULL END |
| ORDER BY 1, 1, 1 |
| LIMIT 100 |