sql 语句赋值 update [lishui].[dbo].[t_NearbyService] set [location]= geography::Point(0,0, 4326) ,[locationbaidu]=geography::Point(0,0, 4326) where [location] is null f_geolatlng.STDistance(geography::Point(@lat,@lng, 4326))
原文：http://www.cnblogs.com/liyangLife/p/4272850.html