STGeomCollFromWKB (geography Data Type)
Applies to: 
SQL Server
Azure SQL Database
Azure SQL Managed Instance
Returns a GeometryCollectioninstance from an Open Geospatial Consortium (OGC) Well-Known Binary (WKB) representation.
Syntax
STGeomCollFromWKB ( 'WKB_geometrycollection' , SRID )
Arguments
WKB_geometrycollection
Is the WKB representation of the GeometryCollection instance you wish to return. WKB_geometrycollection is a varbinary(max) expression.
SRID
Is an int expression representing the spatial reference ID (SRID) of the GeometryCollection instance you wish to return.
Return Types
SQL Server return type: geography
CLR return type: SqlGeography
Remarks
The OGC type of the geography instance returned by STGeomCollFromWKB() is set to GeometryCollection, MultiPolygon, MultiLineString, or MultiPoint, depending on the corresponding WKB input.
This method throws a FormatException exception if the input is not well-formatted.
Examples
The following example uses STGeomCollFromWKB() to create a geography instance.
DECLARE @g geography;
SET @g = geography::STGeomCollFromWKB(0x01070000000200000001010000007593180456965EC017D9CEF753D34740010200000002000000D7A3703D0A975EC08716D9CEF7D34740CBA145B6F3955EC08716D9CEF7D34740, 4326);
SELECT @g.ToString();