STPolyFromText (geography Data Type)

**APPLIES TO:** SQL Server (starting with 2008) Azure SQL Database Azure SQL Data Warehouse Parallel Data Warehouse

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

Syntax

  
STPolyFromText ( 'polygon_tagged_text' , SRID )  

Arguments

polygon_tagged_text
Is the WKT representation of the geographyPolygon instance you wish to return. polygon_tagged_text is an nvarchar(max) expression.

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

Return Types

SQL Server return type: geography

CLR return type: SqlGeography

OGC type: Polygon

Remarks

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

Examples

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

DECLARE @g geography;  
SET @g = geography::STPolyFromText('POLYGON((-122.358 47.653, -122.348 47.649, -122.348 47.658, -122.358 47.658, -122.358 47.653))', 4326);  
SELECT @g.ToString();  

See Also

OGC Static Geography Methods