STLineFromWKB (geography Data Type)
Applies to: 
SQL Server
Azure SQL Database
Azure SQL Managed Instance
Returns a LineString geography instance from an Open Geospatial Consortium (OGC) Well-Known Binary (WKB) representation.
Syntax
STLineFromWKB ( 'WKB_linestring' , SRID )
Arguments
WKB_linestring
Is the WKB representation of the LineString geography instance you wish to return. WKB_linestring is a varbinary(max) expression.
SRID
Is an int expression representing the spatial reference ID (SRID) of the LineString geography instance you wish to return.
Return Types
SQL Server return type: geography
CLR return type: SqlGeography
OGC type: LineString
Remarks
This method throws a FormatException if the input is not well-formatted.
Examples
The following example uses STLineFromWKB() to create a geographyinstance.
DECLARE @g geography;
SET @g = geography::STLineFromWKB(0x010200000002000000D7A3703D0A975EC08716D9CEF7D34740CBA145B6F3955EC08716D9CEF7D34740, 4326);
SELECT @g.ToString();