82 lines
2.9 KiB
SQL
82 lines
2.9 KiB
SQL
WITH year_total AS
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(SELECT c_customer_id customer_id,
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c_first_name customer_first_name,
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c_last_name customer_last_name,
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c_preferred_cust_flag customer_preferred_cust_flag,
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c_birth_country customer_birth_country,
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c_login customer_login,
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c_email_address customer_email_address,
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d_year dyear,
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sum(ss_ext_list_price-ss_ext_discount_amt) year_total,
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's' sale_type
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FROM customer,
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store_sales,
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date_dim
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WHERE c_customer_sk = ss_customer_sk
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AND ss_sold_date_sk = d_date_sk
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GROUP BY c_customer_id,
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c_first_name,
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c_last_name,
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c_preferred_cust_flag,
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c_birth_country,
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c_login,
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c_email_address,
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d_year
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UNION ALL SELECT c_customer_id customer_id,
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c_first_name customer_first_name,
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c_last_name customer_last_name,
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c_preferred_cust_flag customer_preferred_cust_flag,
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c_birth_country customer_birth_country,
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c_login customer_login,
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c_email_address customer_email_address,
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d_year dyear,
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sum(ws_ext_list_price-ws_ext_discount_amt) year_total,
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'w' sale_type
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FROM customer,
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web_sales,
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date_dim
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WHERE c_customer_sk = ws_bill_customer_sk
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AND ws_sold_date_sk = d_date_sk
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GROUP BY c_customer_id,
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c_first_name,
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c_last_name,
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c_preferred_cust_flag,
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c_birth_country,
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c_login,
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c_email_address,
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d_year)
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SELECT t_s_secyear.customer_id,
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t_s_secyear.customer_first_name,
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t_s_secyear.customer_last_name,
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t_s_secyear.customer_preferred_cust_flag
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FROM year_total t_s_firstyear,
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year_total t_s_secyear,
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year_total t_w_firstyear,
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year_total t_w_secyear
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WHERE t_s_secyear.customer_id = t_s_firstyear.customer_id
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AND t_s_firstyear.customer_id = t_w_secyear.customer_id
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AND t_s_firstyear.customer_id = t_w_firstyear.customer_id
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AND t_s_firstyear.sale_type = 's'
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AND t_w_firstyear.sale_type = 'w'
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AND t_s_secyear.sale_type = 's'
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AND t_w_secyear.sale_type = 'w'
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AND t_s_firstyear.dyear = 2001
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AND t_s_secyear.dyear = 2001+1
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AND t_w_firstyear.dyear = 2001
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AND t_w_secyear.dyear = 2001+1
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AND t_s_firstyear.year_total > 0
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AND t_w_firstyear.year_total > 0
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AND CASE
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WHEN t_w_firstyear.year_total > 0 THEN (t_w_secyear.year_total*1.0000) / t_w_firstyear.year_total
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ELSE 0.0
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END > CASE
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WHEN t_s_firstyear.year_total > 0 THEN (t_s_secyear.year_total*1.0000) / t_s_firstyear.year_total
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ELSE 0.0
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END
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ORDER BY t_s_secyear.customer_id NULLS FIRST,
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t_s_secyear.customer_first_name NULLS FIRST,
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t_s_secyear.customer_last_name NULLS FIRST,
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t_s_secyear.customer_preferred_cust_flag NULLS FIRST
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LIMIT 100;
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