MS-SQL Server Selection for Geometry cordinates

Hi,

In MS-SQL database, we are storing all longitude_degrees, latitude_degrees values for passing vessels. In map draw polygon and trying to select the vessels included in that polygon coordinates.

query :

select longitude_degrees, latitude_degrees  from [ Table ] where Geometry::STGeomFromText('POLYGON((103.47718811035156 1.2504558563232422,103.47982025146484 1.2505289316177368,103.49195098876953 1.249359369277954,103.49137115478516 1.2449731826782227,
103.49049377441406 1.2444614171981812,103.48983001708984 1.2444614171981812,103.48551940917969 1.2444614171981812,103.47762298583984 1.2444614171981812,103.47002410888672 1.2444614171981812,103.47718811035156 1.2504558563232422,103.47718811035156 1.2504558563232422,
103.47718811035156 1.2504558563232422))',4326)
.STContains(Geometry::STPointFromText('POINT(' + CAST([longitude_degrees] AS VARCHAR(20)) + ' ' + CAST([latitude_degrees] AS VARCHAR(20)) + ')',0)) = 1

I have used STIntersects and STEquels function also but no records selected.

My expectation is need to get the  vessels inside that polygon as i selected in map.


Please help me to resolve the  problem.



Thanks,
Venkat.
Venkat satyaSoftware developerAsked:
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Máté FarkasDatabase Developer and AdministratorCommented:
Hi,
The problem is that your poligon is not valid because it contains some redundant point.
If you remove those points than it will work:
SELECT *
FROM (
	SELECT	Geometry::STGeomFromText('POLYGON((
				103.47718811035156 1.2504558563232422,
				103.47982025146484 1.2505289316177368,
				103.49195098876953 1.249359369277954,
				103.49137115478516 1.2449731826782227,
				103.49049377441406 1.2444614171981812,
				103.48983001708984 1.2444614171981812,
				103.48551940917969 1.2444614171981812,
				103.47762298583984 1.2444614171981812,
				103.47002410888672 1.2444614171981812,
				103.47718811035156 1.2504558563232422))', 4326) AS Area,
			Geometry::STGeomFromText('POINT(103.4800 1.2480)', 4326) AS Point
) L
WHERE Area.STContains(Point) = 1

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And you have to use the same SRID (sptial reference id) for both objects.
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Venkat satyaSoftware developerAuthor Commented:
Hi Farkas,


Thank you very much.

I missed it.

Venkat
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