STContainsgeomA
STContainsgeomA is a naming convention used in some geographic information system contexts to refer to a spatial predicate that tests whether a geometry, often designated as geomA, contains another geometry. In standard spatial SQL, the analogous predicate is ST_Contains, typically invoked as ST_Contains(geomA, geomB). The variant name emphasizes geomA as the first argument or the primary geometry in the containment check.
Semantics of the predicate follow the conventional containment relationship defined in the DE-9IM model. It returns
Usage and examples. The predicate is commonly employed in queries that require filtering by spatial relationships,
Considerations. Ensure both geometries use the same coordinate reference system, and be mindful of empty or
Related concepts include ST_Contains, ST_Within, ST_Covers, and ST_CoveredBy, which express related spatial relationships and are commonly