STDistance Method
TOC
Collapse the table of content
Expand the table of content

SqlGeography.STDistance Method (SqlGeography)

 

Returns the shortest distance between a point in a SqlGeography instance and a point in another SqlGeography instance.

Namespace:   Microsoft.SqlServer.Types
Assembly:  Microsoft.SqlServer.Types (in Microsoft.SqlServer.Types.dll)

[<SqlMethodAttribute(IsDeterministic = true, IsPrecise = false)>]
member STDistance : 
        other:SqlGeography -> SqlDouble

Parameters

other
Type: Microsoft.SqlServer.Types.SqlGeography

Is another geography instance from which to measure the distance between the instance on which STDistance is invoked. If an empty set is specified, STDistance will return null.

Return Value

Type: System.Data.SqlTypes.SqlDouble

Returns null if the spatial reference IDs (SRIDs) of the SqlGeography instances do not match.

If this method is used to determine distance between antipodal points, or consecutive points on opposite sides of the globe, as in the distance between POINT (0 0) and POINT (180 0), this method will return null.

Return to top
Show:
© 2016 Microsoft