STTouches (geometry Data Type)
Returns 1 if a geometry instance spatially touches another geometry instance. Returns 0 if it does not.
Applies to: SQL Server (SQL Server 2008 through current version), Azure SQL Database.
The following example uses STTouches() to test two geometry instances to see if they touch.
DECLARE @g geometry; DECLARE @h geometry; SET @g = geometry::STGeomFromText('LINESTRING(0 2, 2 0, 4 2)', 0); SET @h = geometry::STGeomFromText('POINT(1 1)', 0); SELECT @g.STTouches(@h);