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EnvelopeAggregate (geography Data Type)

Returns a bounding object for a given set of geography objects. The resulting geography object contains multiple circular arc segments.

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

EnvelopeAggregate ( geography_operand )

geography_operand

Is a geography type table column that holds the set of geography objects on which to perform an envelope aggregate operation.

SQL Server return type: geography

A FullGlobe object is returned when the resulting bounding object is bigger than a hemisphere. This method is not precise.

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

Method ignores null inputs.

Note Note

Method returns null if all inputted values are null.

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

USE AdventureWorks2012

GO

SELECT City,

geography::EnvelopeAggregate(SpatialLocation) AS SpatialLocation

FROM Person.Address

WHERE PostalCode LIKE('981%')

GROUP BY City;

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