20 lines
965 B
SQL
20 lines
965 B
SQL
select cast(amc as decimal(15,4))/cast(pmc as decimal(15,4)) am_pm_ratio
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from ( select count(*) amc
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from web_sales, household_demographics , time_dim, web_page
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where ws_sold_time_sk = time_dim.t_time_sk
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and ws_ship_hdemo_sk = household_demographics.hd_demo_sk
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and ws_web_page_sk = web_page.wp_web_page_sk
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and time_dim.t_hour between 9 and 9+1
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and household_demographics.hd_dep_count = 3
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and web_page.wp_char_count between 5000 and 5200) at,
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( select count(*) pmc
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from web_sales, household_demographics , time_dim, web_page
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where ws_sold_time_sk = time_dim.t_time_sk
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and ws_ship_hdemo_sk = household_demographics.hd_demo_sk
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and ws_web_page_sk = web_page.wp_web_page_sk
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and time_dim.t_hour between 16 and 16+1
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and household_demographics.hd_dep_count = 3
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and web_page.wp_char_count between 5000 and 5200) pt
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order by am_pm_ratio
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limit 100;
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