UnionAggregate (geography Data Type)

THIS TOPIC APPLIES TO:yesSQL Server (starting with 2012)yesAzure SQL DatabasenoAzure SQL Data Warehouse noParallel Data Warehouse

Performs a union operation on a set of geography objects.

||
|-|
|Applies to: SQL Server ( SQL Server 2012 through current version), Azure SQL Database.|

Syntax


UnionAggregate ( geography_operand )  

Arguments

geography_operand
Is a geography type table column that holds the set of geography objects on which to perform a union operation.

Return Types

SQL Server return type: geography

Remarks

Method returns null if the input has different SRIDs. See Spatial Reference Identifiers (SRIDs).

Method ignores null inputs.

Note

Method returns null if all inputted values are null.

Examples

The following example performs a UnionAggregate on a set of geography location points within a city.

USE AdventureWorks2012

GO

SELECT City,

geography::UnionAggregate(SpatialLocation) AS SpatialLocation

FROM Person.Address

WHERE PostalCode LIKE('981%')

GROUP BY City;

See Also

Extended Static Geography Methods