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STLineFromText (geography Data Type)

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.

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

STLineFromText ( 'linestring_tagged_text' , SRID )

linestring_tagged_text

Is the WKT representation of the geography LineString instance you wish to return. linestring_tagged_text is an nvarchar(max) expression.

SRID

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

SQL Server return type: geography 

CLR return type: SqlGeography

OGC type: LineString

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

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

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

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