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geometry (Transact-SQL)
geometry Data Type Method Reference
OGC Methods on Geometry Instances
STArea (geometry Data Type)
STAsBinary (geometry Data Type)
STAsText (geometry Data Type)
STBoundary (geometry Data Type)
STBuffer (geometry Data Type)
STCentroid (geometry Data Type)
STContains (geometry Data Type)
STConvexHull (geometry Data Type)
STCrosses (geometry Data Type)
STCurveN (geometry Data Type)
STCurveToLine (geometry Data Type)
STDifference (geometry Data Type)
STDimension (geometry Data Type)
STDisjoint (geometry Data Type)
STDistance (geometry Data Type)
STEndpoint (geometry Data Type)
STEnvelope (geometry Data Type)
STEquals (geometry Data Type)
STExteriorRing (geometry Data Type)
STGeometryN (geometry Data Type)
STGeometryType (geometry Data Type)
STInteriorRingN (geometry Data Type)
STIntersection (geometry Data Type)
STIntersects (geometry Data Type)
STIsClosed (geometry Data Type)
STIsEmpty (geometry Data Type)
STIsRing (geometry Data Type)
STIsSimple (geometry Data Type)
STIsValid (geometry Data Type)
STLength (geometry Data Type)
STNumCurves (geometry Data Type)
STNumGeometries (geometry Data Type)
STNumInteriorRing (geometry Data Type)
STNumPoints (geometry Data Type)
STOverlaps (geometry Data Type)
STPointN (geometry Data Type)
STPointOnSurface (geometry Data Type)
STRelate (geometry Data Type)
STSrid (geometry Data Type)
STStartPoint (geometry Data Type)
STSymDifference (geometry Data Type)
STTouches (geometry Data Type)
STUnion (geometry Data Type)
STWithin (geometry Data Type)
STX (geometry Data Type)
STY (geometry Data Type)
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STIntersects (geometry Data Type)

SQL Server 2012

Returns 1 if a geometry instance intersects another geometry instance. Returns 0 if it does not.

Copy 
.STIntersects ( other_geometry )
other_geometry

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

SQL Server return type: bit

CLR return type: SqlBoolean

This method always returns null if the spatial reference IDs (SRIDs) of the geometry instances do not match.

The following example uses STIntersects() to determine if two geometry instances intersect each other.

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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.STIntersects(@h);
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