sqlgeography

来源： https://stackoverflow.com/questions/64205007/specified-type-is-not-registered-on-the-target-server-microsoft-sqlserver-types

来源： https://stackoverflow.com/questions/64205007/specified-type-is-not-registered-on-the-target-server-microsoft-sqlserver-types

来源： https://stackoverflow.com/questions/15975066/net-equivalent-of-sql-server-stdistance

来源： https://stackoverflow.com/questions/15975066/net-equivalent-of-sql-server-stdistance

问题 First, SQL version: Microsoft SQL Server 2016 (RTM) - 13.0.1601.5 (X64) Apr 29 2016 23:23:58 Copyright (c) Microsoft Corporation Standard Edition (64-bit) on Windows Server 2012 R2 Standard 6.3 (Build 9600: ) (Hypervisor) I declare a single closed polygon (correctly oriented using left-hand rule), which according to SQL is valid: DECLARE @g geography; SET @g = geography::STPolyFromText('POLYGON((-141.251221 60.177476, -134.351807 52.952478, -124.859620 48.440718, -123.623658 48.163009, -123

问题 I'm attempting to convert all of our C# class libraries from .NET Framework to .NET Standard projects, as we are starting to leverage .NET Core so need these to be consumable by both .NET Core and .NET Framework apps (with the latter being ported over to Core in the upcoming months.) I'm having trouble converting our data access layer code, because we leverage Microsoft.SqlServer.Types extensively and the official nuget package doesn't support .NET Standard. I tried an unofficial nuget

问题 I'm using SQL Server and creating a script which will get the workers geographical location out of my database. The script is below. SELECT w.display_name, w.geo_location FROM jobs j WITH(NOLOCK) INNER JOIN workers w WITH(NOLOCK) ON w.worker_id = j.worker_id WHERE ..... The problem is that I want to add GROUP BY w.display_name, w.geo_location to the script as there are duplicate records being shown. Added a column with the data type geography to a group by clause causes an error to be thrown.

问题 I'm trying to query any locations within a specified distance from another location. The query is not the problem, but the distance returned by geography.STDistance is. It seems STDistance makes fairly accurate calculations on locations close to the equator, but I need this to work with locations in the nordic countries. Norway, Sweden, Finland and so on... According to my calculations, made on locations in northern Sweden, the distance is wrong by a factor of around 2.38?! Expected result is

问题 This is the follow up question from here. Given : A geojson file with 3 different geometry types (Point, Polygon, Line) and multiple properties ( AssetType , GeoID , etc.), write each geometry type and its corresponding properties to a single Azure SQL record which uses a Geography-type column. Work so far : I have separate SQL statements that will push the properties alone, then push the Polygon alone into a Geography-type column. But this results in the properties in one record and the

问题 A little about the application; The application allows the user to draw and save polygons onto bing maps WPF api. The piece of code we are interested in is finding weather a point is whithin the polygon or not. The following function simply loops through the LocationCollection of the polygon on the bing map, and creates a SqlGeography object (OpenGisGeographyType.Polygon) which is an instance of a polygon. We then convert the mouse click into SqlGeography object (OpenGisGeographyType.Point)