STPointFromWKB (geography Data Type)
Applies to: 
SQL Server
Azure SQL Database
Azure SQL Managed Instance
Returns a geographyPoint instance from an Open Geospatial Consortium (OGC) Well-Known Binary (WKB) representation.
Syntax
STPointFromWKB ( 'WKB_point' , SRID )
Arguments
WKB_point
Is the WKB representation of the geographyPoint instance you wish to return. WKB_point is a varbinary(max) expression.
SRID
Is an int expression representing the spatial reference ID (SRID) of the geographyPoint instance you wish to return.
Return Types
SQL Server return type: geography
CLR return type: SqlGeography
OGC type: Point
Remarks
This method throws a FormatException if the input is not well-formatted.
Examples
The following example uses STPointFromWKB() to create a geography instance.
DECLARE @g geography;
SET @g = geography::STPointFromWKB(0x010100000017D9CEF753D347407593180456965EC0, 4326);
SELECT @g.ToString();