unionaggregate-geography-data-type.md

title	description	author	ms.author	ms.date	ms.service	ms.subservice	ms.topic	f1_keywords	helpviewer_keywords	dev_langs
UnionAggregate (geography Data Type)	UnionAggregate (geography Data Type)	MladjoA	mlandzic	07/30/2017	sql	t-sql	reference	UnionAggregate UnionAggregate_TSQL	UnionAggregate method (geography)	TSQL

UnionAggregate (geography Data Type)

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Performs a union operation on a set of geography objects.

Syntax

  
UnionAggregate ( geography_operand )  

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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

[!INCLUDEssNoVersion] 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 AdventureWorks2022  
GO  
SELECT City,  
geography::UnionAggregate(SpatialLocation) AS SpatialLocation  
FROM Person.Address  
WHERE PostalCode LIKE('981%')  
GROUP BY City;

See Also

Extended Static Geography Methods