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What kind of data type is geography in SQL Server?
APPLIES TO: SQL Server Azure SQL Database Azure SQL Data Warehouse Parallel Data Warehouse The geography spatial data type, geography, is implemented as a .NET common language runtime (CLR) data type in SQL Server. This type represents data in a round-earth coordinate system.
How do I create a geography instance in SQL?
A third column renders the geography column into its Open Geospatial Consortium (OGC) Well-Known Text (WKT) representation, and uses the STAsText () method. Two rows are then inserted: one row contains a LineString instance of geography, and one row contains a Polygon instance.
What kind of data is stored in geography?
The geography spatial data type, geography, is implemented as a.NET common language runtime (CLR) data type in SQL Server. This type represents data in a round-earth coordinate system. The SQL Server geography data type stores ellipsoidal (round-earth) data, such as GPS latitude and longitude coordinates.
How to create a table with a Geography Column?
The first example creates a table with an identity column and a geography column, GeogCol1. A third column renders the geography column into its Open Geospatial Consortium (OGC) Well-Known Text (WKT) representation, and uses the STAsText () method.
How to get lat-long from geography data type?
M = Measure (?) What is Measure? Is that how large the radius (well, spherical radius) of the geospatial point is?
How to store latitude and longitude in SQL?
Well, you asked how to store Latitude/Longitude and my answer is: Don’t, you might consider using the WGS 84 ( in Europe ETRS 89 ) as it is the standard for Geo references. But that detail aside I used a User Defined Type in the days before SQL 2008 finally include geo support.
How to convert a SQL query to geography?
Note that MakeValid may cause the points of a spatial instance to shift slightly.System.ArgumentException: at Microsoft.SqlServer.Types.SqlGeography..ctor (GeoData g, Int32 srid) at Microsoft.SqlServer.Types.SqlGeography.GeographyFromText (OpenGisType type, SqlChars taggedText, Int32 srid) Any idea how I can convert it to geography ?
How to convert LineString to geography in MSSQL?
In MSSQL I have LineString in Geometry type. When I try to convert it to geography using : Msg 6522, Level 16, State 1, Line 19 A .NET Framework error occurred during execution of user-defined routine or aggregate “geography”:System.ArgumentException: 24200: The specified input does not represent a valid geography instance.