STRelate (geometry Data Type)

APPLIES TO: yesSQL Server yesAzure SQL Database noAzure Synapse Analytics (SQL DW) 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.


.STRelate ( other_geometry, intersection_pattern_matrix )  


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

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


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


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