| title | description | author | ms.author | ms.date | ms.service | ms.subservice | ms.topic | ms.custom | f1_keywords | helpviewer_keywords | dev_langs | |||||
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Z (geography Data Type) |
Z (geography Data Type) |
MladjoA |
mlandzic |
03/14/2017 |
sql |
t-sql |
reference |
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[!INCLUDE SQL Server Azure SQL Database Azure SQL Managed Instance FabricSQLDB]
The Z (elevation) value of the instance. The semantics of the elevation value are user-defined.
.Z
[!INCLUDEssNoVersion] type: float
CLR type: SqlDouble
The value of this property is null if the geography instance is not a point, as well as for any Point instance for which it is not set.
This property is read-only.
Z-coordinates are not used in any calculations made by the library and are not carried through any library calculations.
The following example creates a Point instance with Z (elevation) and M (measure) values and uses Z to fetch the Z value of the instance.
DECLARE @g geography;
SET @g = geography::STGeomFromText('POINT(-122.34900 47.65100 10.3 12)', 4326);
SELECT @g.Z; Extended Methods on Geography Instances
M (geography Data Type)
AsTextZM (geography Data Type)