STRelate (geometry Data Type)

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

Returns 1 if a geometry instance is related to another geometry instance, where the relationship is defined by a Dimensionally Extended 9 Intersection Model (DE-9IM) pattern matrix value; otherwise, returns 0.

Syntax


.STRelate ( other_geometry, intersection_pattern_matrix )  

Arguments

other_geometry
Is another geometry instance to compare against the instance on which STRelate() is invoked.

intersection_pattern_matrix
Is a string of type nchar(9) encoding acceptable values for the DE-9IM pattern matrix device between the two geometry instances.

Remarks

This method always returns null if the spatial reference IDs (SRIDs) of the geometry instances do not match. This method will throw an ArgumentException if the matrix is not well-formed.

Return Types

SQL Server return type: bit

CLR return type: SqlBoolean

Examples

The following example uses STRelate() to test two geometry instances for spatial disjoint using an explicit DE-9IM pattern.

DECLARE @g geometry;  
DECLARE @h geometry;  
SET @g = geometry::STGeomFromText('LINESTRING(0 2, 2 0, 4 2)', 0);  
SET @h = geometry::STGeomFromText('POINT(5 5)', 0);  
SELECT @g.STRelate(@h, 'FF*FF****');  

See Also

OGC Methods on Geometry Instances