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ToString (geography Data Type)

  • Artykuł

Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance SQL database in Microsoft Fabric

Returns the Open Geospatial Consortium (OGC) Well-Known Text (WKT) representation of a geography instance augmented with any Z (elevation) and M (measure) values carried by the instance.

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

Syntax

  
.ToString ()

Return Types

SQL Server return type: nvarchar(max)

CLR return type: SqlString

Remarks

This method returns the string "Null" when called on null instances. In SQL Server 2012 (11.x), the set of possible results on the server has been extended to FullGlobe instances. This method will return the same value as AsTextZM().

This method is not precise.

Examples

The following example create a LineString instance and uses ToString() to return the text description of the instance.

DECLARE @g geography;  
SET @g = geography::STGeomFromText('LINESTRING(-122.360 47.656, -122.343 47.656)', 4326);  
SELECT @g.ToString();

See Also

Extended Methods on Geography Instances
AsTextZM (geography Data Type)