Point (geography Data Type)
Applies to: 
SQL Server
Azure SQL Database
Azure SQL Managed Instance
Constructs a geography instance representing a Point instance from its latitude and longitude values and a spatial reference ID (SRID).
Syntax
Point ( Lat, Long, SRID )
Arguments
Lat
Is a float expression representing the y-coordinate of the Point being generated.
Long
Is a float expression representing the x-coordinate of the Point being generated. For more information on valid latitude and longitude values, see Point.
SRID
Is an int expression representing the Spatial Reference Identifier of the geography instance you wish to return.
Note
Arguments for the Point (geography Data Type) method have coordinates reversed compared to WKT.
Return Types
SQL Server return type: geography
CLR return type: SqlGeography
Examples
The following example uses Point() to create a geography instance.
DECLARE @g geography;
SET @g = geography::Point(47.65100, -122.34900, 4326)
SELECT @g.ToString();