从纬度创建几何/地理字段 &经度字段 (SQL Server)

问题描述

我有一个包含纬度和经度两个字段的视图，我想创建一个新视图，将这些纬度/经度字段转换为几何/地理字段(不确定哪个最适合 ArcGIS).原始视图中的字段是双类型的，我希望它们在我的新视图中转换为空间类型.

I have a view that contains two fields for latitude and longitude, and I would like to create a new view that converts these lat/lon fields into a geometry/geography field (unsure which is most appropriate for ArcGIS). The fields in the original view are of double type, and I would like them cast as a spatial type in my new view.

目前我不确定如何将这些字段转换为空间类型.Stack Overflow 上的所有其他类似问题都没有给我一个可行的解决方案，所以如果这个问题似乎是重复的，我深表歉意，但希望一个更清晰的例子也可以帮助其他人.

Currently I am unsure how to cast these fields as spatial types. All the other similar questions on Stack Overflow never got me a working solution, so I apologize if this question appears to be a duplicate, but hopefully a clearer example could help others as well.

我的新视图写得很简单-

My new view is written pretty simply-

SELECT * FROM view_name WHERE (latitude <> 0) AND (longitude <> 0)

如何基于现有视图创建这个新视图，并将这两个字段(或创建一个填充有纬度/经度值的新空间字段)转换为空间类型?

How can I create this new view, based on an existing view, and cast the two fields (or create a new spatial field populated with the lat/lon values) as a spatial type?

我使用的是 SQL Server Management Studio，2012 版.如果我遗漏了任何相关信息，请告诉我.我很乐意提供尽可能多的详细信息.

I am using the SQL Server Management Studio, 2012 edition. Please let me know if I omitted any pertinent information. I am happy to provide as many details as I can.

推荐答案

  SELECT  *,
          geography::STGeomFromText('POINT(' +
                CAST([Longitude] AS VARCHAR(20)) + ' ' +
                CAST([Latitude] AS VARCHAR(20)) + ')', 4326) as GEOM,

          geography::Point([Latitude], [Longitude], 4326) as SAME_GEOM

  FROM view_name
  WHERE (latitude <> 0) AND (longitude <> 0)

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