ST_CollectionHomogenize — Given a geometry collection, return the "simplest" representation of the contents.
geometry ST_CollectionHomogenize(
geometry collection)
;
Given a geometry collection, returns the "simplest" representation of the contents. Singletons will be returned as singletons. Collections that are homogeneous will be returned as the appropriate multi-type.
When specifying 3 == POLYGON a multipolygon is returned even when the edges are shared. This results in an invalid multipolygon for many cases such as applying this function on an ST_Split result. |
Availability: 2.0.0