stdimension-geography-data-type.md

title	description	author	ms.author	ms.date	ms.service	ms.subservice	ms.topic	ms.custom	f1_keywords	helpviewer_keywords	dev_langs
STDimension (geography Data Type)	STDimension (geography Data Type)	MladjoA	mlandzic	03/14/2017	sql	t-sql	reference	ignite-2024	STDimension (geography Data Type) STDimension_TSQL	STDimension method	TSQL

STDimension (geography Data Type)

[!INCLUDE SQL Server Azure SQL Database Azure SQL Managed Instance FabricSQLDB]

Returns the maximum dimension of a geography instance.

Syntax

  
.STDimension ( )  

Return Types

[!INCLUDEssNoVersion] return type: int

CLR return type: SqlInt32

Remarks

STDimension() returns -1 if the geography instance is empty.

Examples

The following example uses STDimension() to create a table variable to hold geography instances, and inserts a Point, a LineString, and a Polygon.

DECLARE @temp table ([name] varchar(10), [geom] geography);  
  
INSERT INTO @temp values ('Point', geography::STGeomFromText('POINT(-122.34900 47.65100)', 4326));  
INSERT INTO @temp values ('LineString', geography::STGeomFromText('LINESTRING(-122.360 47.656, -122.343 47.656)', 4326));  
INSERT INTO @temp values ('Polygon', geography::STGeomFromText('POLYGON((-122.358 47.653, -122.348 47.649, -122.348 47.658, -122.358 47.658, -122.358 47.653))', 4326));  
  
SELECT [name], [geom].STDimension() as [dim]  
FROM @temp;  

The example then returns the dimensions of each geographyinstance.

name	dim
Point	0
LineString	1
Polygon	2

See Also

OGC Methods on Geography Instances