如果您有一个表格存储Google Maps点,如下所示：

CREATE TABLE geo_locations (
    location_id       uniqueidentifier  NOT NULL,position_point    geography         NOT NULL
);

那么您可以使用此存储过程填写其中的内容：

CREATE PROCEDURE proc_AddPoint
  @latitude   decimal(9,6),@longitude  decimal(9,@altitude   smallInt
AS

DECLARE @point   geography = NULL;

BEGIN

  SET NOCOUNT ON;

  SET @point = geography::STPointFromText('POINT(' + CONVERT(varchar(15),@longitude) + ' ' + 
                           CONVERT(varchar(15),@latitude) + ' ' + 
                           CONVERT(varchar(10),@altitude) + ')',4326)

  INSERT INTO geo_locations
  (
    location_id,position_point
  )
  VALUES 
  (
    NEWID(),@point
  );

END

那么如果要查询纬度,经度和高度,只需使用以下查询格式：

SELECT
    geo_locations.position_point.Lat  AS latitude,geo_locations.position_point.Long AS longitude,geo_locations.position_point.Z    AS altitude
FROM
    geo_locations;