| title | STDimension (geography Data Type) | ||
|---|---|---|---|
| description | STDimension (geography Data Type) | ||
| author | MladjoA | ||
| ms.author | mlandzic | ||
| ms.date | 03/14/2017 | ||
| ms.service | sql | ||
| ms.subservice | t-sql | ||
| ms.topic | reference | ||
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[!INCLUDE SQL Server Azure SQL Database Azure SQL Managed Instance FabricSQLDB]
Returns the maximum dimension of a geography instance.
.STDimension ( )
[!INCLUDEssNoVersion] return type: int
CLR return type: SqlInt32
STDimension() returns -1 if the geography instance is empty.
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 geography instance.
| name | dim |
|---|---|
| Point | 0 |
| LineString | 1 |
| Polygon | 2 |