This function returns the number of interior rings of a polygon geom. It returns NULL if the geom is not a polygon.
PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with
PostGIS Official Documentation for this method can be found here.
Additional capabilities and usage examples can be found in the PostGIS documentation.
Last modified April 06, 2022 at 10:08 AM EST: Initial Documentation Commit (371ae8f)