STContains (geometry Data Type)

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

Syntax

.STContains ( other_geometry )

Arguments

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

Return Types

SQL Server return type: bit

CLR return type: SqlBoolean

Remarks

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

Examples

The following example uses STContains() to test two geometry instances to see if the first instance contains the second instance.

DECLARE @g geometry;
DECLARE @h geometry;
SET @g = geometry::STGeomFromText('POLYGON((0 0, 2 0, 2 2, 0 2, 0 0))', 0);
SET @h = geometry::STGeomFromText('POINT(1 1)', 0);
SELECT @g.STContains(@h);

See Also

Concepts

Spatial Indexes Overview

Other Resources

OGC Methods on Geometry Instances