Predicates

The following predicate functions are available:

Function	Description
ST_Contains	Return true if Geometry A contains Geometry B
ST_CoveredBy	eturns true if Geometry A is covered by Geometry B
ST_Covers	Return true if no point in Geometry B is outside Geometry A
ST_Crosses	Return true if Geometry A crosses Geometry B
ST_DWithin	Return true if the Geometries are within the specified distance of one another
ST_Disjoint	Return true Geometries A and B are disjoint
ST_EnvelopesIntersect	Return true if the envelope of Geometry A intersects the envelope of Geometry B
ST_Equals	Return true if Geometry A equals Geometry B
ST_Intersects	Return true if Geometry A intersects Geometry B
ST_OrderingEquals	Returns TRUE if Geometry A equals Geometry B and their coordinates and component Geometries are listed in the same order
ST_Overlaps	Return true if Geometry A overlaps Geometry B
ST_Relate	Return the DE-9IM intersection matrix of the two Geometries or true if they are related by the given intersection matrix
ST_Touches	Return true if Geometry A touches Geometry B
ST_Within	Return true if Geometry A is within Geometry B

• ST_Contains
• ST_CoveredBy
• ST_Covers
• ST_Crosses
• ST_DWithin
• ST_Disjoint
• ST_EnvelopesIntersect
• ST_Equals
• ST_Intersects
• ST_OrderingEquals
• ST_Overlaps
• ST_Relate
• ST_Touches
• ST_Within