中的SQL 分析端點,Microsoft fabric SQL Database Microsoft Fabric 中的 SQL Database 地理位置空間資料類型 (geography) 代表圓形表面座標系統中的資料。 此類型會在 SQL Server 中實作為 .NET Common Language Runtime (CLR) 資料類型。 SQL Servergeography資料類型會儲存橢圓體 ...
SQL Server 返回类型:nvarchar(max)CLR 返回类型:SqlChars备注geography 实例的 OGC 类型可通过调用 STGeometryType() 来确定。在SQL Server 2012 (11.x) 中,服务器上可能返回的结果集已扩展到 FullGlobe 实例。示例下面的示例使用 STAsText() 根据文本创建一个从 (-122.360, 47.656) 到 (-122.343, 47.656) ...
SQL Server 傳回類型:bitCLR 傳回類型:SqlBoolean範例下列範例會建立空的 geography 例項,並使用 STIsEmpty() 來確認此例項確實是空的。SQL 複製 DECLARE @g geography; SET @g = geography::STGeomFromText('POLYGON EMPTY', 4326); SELECT @g.STIsEmpty(); ...
SQL Server type: float CLR type: SqlDouble Remarks In the OpenGIS model, Lat is defined only on geography instances composed of a single point. This property will return NULL if geography instances contain more than a single point. This property is precise and read-only. Examples This example...
SQL Server return type: floatCLR return type: SqlDoubleRemarksThe result is expressed in the unit of measure defined by the Spatial Reference Identifier (SRID) of spatial data. STDistance() always returns null if the spatial reference IDs (SRIDs) of the geography instances do not match....
SQL Server return type: floatCLR return type: SqlDoubleRemarksThe result is expressed in the unit of measure defined by the Spatial Reference Identifier (SRID) of spatial data. STDistance() always returns null if the spatial reference IDs (SRIDs) of the geography instances do not match....
The geography type represents data in a round-earth coordinate system. Both data types are implemented as .NET common language runtime (CLR) data types in SQL Server. 官网链接如下: https://msdn.microsoft.com/en-us/library/bb933790%28v=sql.110%29.aspx...
SQL Server return type:geography CLR return type:SqlGeography Remarks The OGC type of thegeographyinstance returned bySTGeomFromText()is set to the corresponding WKT input. This method throws anArgumentExceptionif the input contains an antipodal edge. ...
SQL Server return type:geography Remarks Method returnsnullif the input has different SRIDs. SeeSpatial Reference Identifiers (SRIDs). Method ignoresnullinputs. Note Method returnsnullif all inputted values arenull. Examples The following example performs aUnionAggregateon a set ofgeographylocation points...
SELECT geometry::STGeomFromText('POLYGON((-122.358 47.653, -122.348 47.649, -122.348 47.658, -122.358 47.658, -122.358 47.653))', 4326).STGeometryType() --交集 SELECT geography::STGeomFromText('POLYGON((-122.358 47.653, -122.348 47.649, -122.348 47.658, -122.358 47.658, -122.358 47.653))', 432...