這是SQL Server 2012「超單半球」錯誤，實際上是SRID錯誤嗎？

我試圖插入一個多邊形到一個地理類型字段在SQL Server 2012中這是SQL Server 2012「超單半球」錯誤，實際上是SRID錯誤嗎？

UPDATE tblProjects 
SET tblProjects.Boundary = geography::STGeomFromText('POLYGON ((-93.30388806760311 27.994401411046173, -94.62224744260311 33.37641235124676, -79.70281384885311 31.80289258670676, -93.30388806760311 27.994401411046173))',4326) 
WHERE tblProjects.ProjectID = 1;

我收到以下錯誤，儘管事實上我的多邊形是在一個半球：

Msg 6522, Level 16, State 1, Line 1 
A .NET Framework error occurred during execution of user-defined routine or aggregate "geography": 
Microsoft.SqlServer.Types.GLArgumentException: 24205: The specified input does not represent a valid geography instance because it exceeds a single hemisphere. Each geography instance must fit inside a single hemisphere. A common reason for this error is that a polygon has the wrong ring orientation. To create a larger than hemisphere geography instance, upgrade the version of SQL Server and change the database compatibility level to at least 110. 
Microsoft.SqlServer.Types.GLArgumentException: 
    at Microsoft.SqlServer.Types.GLNativeMethods.GeodeticIsValid(GeoData& g, Double eccentricity, Boolean forceKatmai) 
    at Microsoft.SqlServer.Types.SqlGeography.IsValidExpensive(Boolean forceKatmai) 
    at Microsoft.SqlServer.Types.SqlGeography..ctor(GeoData g, Int32 srid) 
    at Microsoft.SqlServer.Types.SqlGeography.GeographyFromText(OpenGisType type, SqlChars taggedText, Int32 srid)

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我假設這是與空間參考ID作爲以下返回NULL相關聯的錯誤：

SELECT distinct Boundary.STSrid AS SRID 
FROM dbo.tblProjects;

我在這個假設中正確嗎？我如何去設置SRID？我試圖返回一個錯誤：

UPDATE dbo.tblProjects 
SET Boundary.STSrid = 4326;

錯誤：

Msg 5302, Level 16, State 1, Line 1 
Mutator 'STSrid' on 'Boundary' cannot be called on a null value.

來源

2014-01-16 Roy

所以看來，環方向確實是問題。顯然，我的web映射器的輸出具有與SQL Server想要的相反順序的頂點。我改變了第二個和第三個頂點的順序（第一個和最後一個始終完全相同，以確保形狀是完整的多邊形） here和UPDATE聲明沒有任何問題。

現在找出如何以編程方式解決此問題的有趣部分。

來源

2014-01-16 19:08:30 Roy

這是SQL Server 2012「超單半球」錯誤，實際上是SRID錯誤嗎？

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