SQLite空间数据库：业主房产总面积与总价值去重求和排名

Hey there! Let's get this sorted for you. Based on your description of the SQLite spatial database with parcel data, here's the SQL query that will generate the owner ranking list you need—grouping by unique owners, summing their total acreage and property value, then sorting in descending order:

SELECT 
    OWNER,
    SUM(TOTAL_ACRE) AS TOTAL_OWNED_ACREAGE,
    SUM(TOTAL_VALUE) AS TOTAL_OWNED_VALUE,
    ROW_NUMBER() OVER (ORDER BY SUM(TOTAL_VALUE) DESC, SUM(TOTAL_ACRE) DESC) AS OWNER_RANK
FROM 
    your_table_name  -- Replace this with your actual table name!
WHERE 
    OWNER IS NOT NULL  -- Optional: exclude entries with no owner listed
GROUP BY 
    OWNER
ORDER BY 
    TOTAL_OWNED_VALUE DESC, 
    TOTAL_OWNED_ACREAGE DESC;

Breakdown of what this does: #

• GROUP BY OWNER: This collapses all entries for the same owner into a single row, eliminating duplicate owner entries entirely.
• SUM(TOTAL_ACRE) & SUM(TOTAL_VALUE): Calculates the total acreage and combined property value each owner holds across all their parcels.
• ROW_NUMBER() OVER (...): Adds an explicit ranking number to each owner (starting at 1 for the highest-value holder). Ties are broken by total acreage—omit this line if you don't need the rank column.
• ORDER BY: Sorts the final list first by total property value (descending), then by total acreage (descending) to prioritize owners with the most valuable holdings.
• WHERE OWNER IS NOT NULL: Optional but handy if your database has parcels with no listed owner that you want to exclude from the ranking.

Just swap out your_table_name with the actual name of your parcel table, and this should fix the issues you ran into with your previous queries—chances are the missing GROUP BY clause was causing duplicate owner entries or incorrect summed values.

内容的提问来源于stack exchange，提问作者J. Taylor