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GeomFromGML (geography Data Type)

Constructs a geography instance given a representation in the SQL Server subset of the Geography Markup Language (GML).

For more information on GML, see the following Open Geospatial Consortium Specifications: OGC Specifications, Geography Markup Language

This geography data type method supports FullGlobe instances or spatial instances that are larger than a hemisphere.

Applies to: SQL Server (SQL Server 2008 through current version), Azure SQL Database.

GeomFromGml ( GML_input, SRID )

GML_input

Is an XML input from which the GML will return a value.

SRID

Is an int expression representing the spatial reference ID (SRID) of the geography instance to return.

SQL Server return type: geography

CLR return type: SqlGeography

This method throws a FormatException if the input is not well-formatted.

This method will throw ArgumentException if the input contains antipodal edge.

The following example uses GeomFromGml() to create a geography instance.

DECLARE @g geography;
DECLARE @x xml;
SET @x = '<LineString xmlns="http://www.opengis.net/gml"><posList>47.656 -122.36 47.656 -122.343</posList></LineString>';
SET @g = geography::GeomFromGml(@x, 4326);
SELECT @g.ToString();

The following example uses GeomFromGml() to create a FullGlobe geography instance.

DECLARE @g geography;
DECLARE @x xml;
SET @x = '<FullGlobe xmlns="http://schemas.microsoft.com/sqlserver/2011/geography" />';
SET @g = geography::GeomFromGml(@x, 4326);
SELECT @g.ToString();

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