How do I Combine these SQL SELECT queries into one SELECT statement

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挽巷
挽巷 2021-01-17 22:17

How do I combine these two select statements into one query:

SELECT SUM( incidents )  AS fires, neighborhoods AS fire_neighborhoods
FROM (
SELECT * 
FROM `fi         


        
5条回答
  •  死守一世寂寞
    2021-01-17 23:02

    Thanks for the the help in figuring this out. Shout out to David Hall, Aaron, Jeffrey Whitledge & NYSystemsAnalyst. I went with the dummy column option:

    SELECT SUM( incidents ) , neighborhoods,  'adw' as offense 
    FROM (
    SELECT * 
    FROM `adw_2009_incident_location` 
    UNION ALL SELECT * 
    FROM `adw_2008_incident_location`
    UNION ALL SELECT * 
    FROM `adw_2007_incident_location`
    UNION ALL SELECT * 
    FROM `adw_2006_incident_location`
    ) AS combo 
    GROUP BY neighborhoods  
    UNION ALL
    SELECT SUM( incidents ), neighborhoods,  'fire' as offense 
    FROM (
    SELECT * 
    FROM `fire_2009_incident_location` 
    UNION ALL SELECT * 
    FROM `fire_2008_incident_location`
    UNION ALL SELECT * 
    FROM `fire_2007_incident_location`
    UNION ALL SELECT * 
    FROM `fire_2006_incident_location`
    ) AS combo2
    GROUP BY neighborhoods 
    

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