How can I do this Spatial Query in Sql 2008?

问题

i'm trying to do a spatial query in sql 2008 -> for a given list of POI's (point of interest, long/lat GEOGRAPHY data), which postcodes do they exist in (multipolygon GEOGRAPHY data).

So this is the query i tried, but it's syntactically incorrect:-

SELECT PostCodeId, ShapeFile
FROM Postcodes a
WHERE a.ShapeFile.STIntersects(
    SELECT PointOfInterest
    FROM PointOfInterests
    WHERE PointOfInterestId IN (SELECT Item from dbo.fnSplit(@PoiIdList, ','))

So this means i pass in a csv list of POI Id's and split them. That's not a problem .. it's my subquery in the STIntersects. That's invalid.

So .. any suggestions folks?

回答1:

How about:

SELECT a.PostCodeId, a.ShapeFile
FROM (SELECT Item from dbo.fnSplit(@PoiIdList, ',')) AS POI_IDs
INNER JOIN PointOfInterests
    ON PointOfInterests.PointOfInterestId = POI_IDs.Item
INNER JOIN Postcodes a
    ON a.ShapeFile.STIntersects(PointOfInterests.PointOfInterest) = 1

来源：https://stackoverflow.com/questions/498353/how-can-i-do-this-spatial-query-in-sql-2008