SQL Server Geography Point
I have recently been researching the SQL Server spatial data types and have decided to try and store my long, lat points in a geography field.
However I cannot figure out how to insert the data into the field, I have tried using stuff like "POINT(double, double), 0" and weird stuff like that, but no success.
Also im curious as to what the purpose of the ID argument s开发者_JAVA百科pecified in the geography functions.
Thanks, Alex.
Have you looked at the examples from MSDN?
From geography (Transact-SQL)
:
IF OBJECT_ID ( 'dbo.SpatialTable', 'U' ) IS NOT NULL
DROP TABLE dbo.SpatialTable;
GO
CREATE TABLE SpatialTable
( id int IDENTITY (1,1),
GeogCol1 geography,
GeogCol2 AS GeogCol1.STAsText() );
GO
INSERT INTO SpatialTable (GeogCol1)
VALUES (geography::STGeomFromText('LINESTRING(-122.360 47.656, -122.343 47.656 )', 4326));
INSERT INTO SpatialTable (GeogCol1)
VALUES (geography::STGeomFromText('POLYGON((-122.358 47.653 , -122.348 47.649, -122.348 47.658, -122.358 47.658, -122.358 47.653))', 4326));
GO
And from Point
:
DECLARE @g geometry;
SET @g = geometry::STGeomFromText('POINT (3 4)', 0);
SET @g = geometry::Parse('POINT(3 4 7 2.5)');
DECLARE @g geography;
SET @g = geography::Point(4, 3, 4326);
Notice: Lat and Long are the other way around, compared to the POINT syntax above.
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