QGIS offers the option to use layer filters:
Layer Properties > Source > Provider Feature Filter, see documentation: Query Builder.
As far as I can see, this filter is only able to filter based on attributes, but does not have the option to define spatial queries. So what is possible using e.g. a virtual layer or a PostGIS query (filtering let's say all polygons from layer 1 that are disjoint from layer 2), is not possible with this Provider Feature Filter.
Is this correct?
I'm just asking if I miss something or not, so the answer I'm looking for is just a confirmation or falsification of my assumption that there is no possibility for spatial queries (like
disjoint) there. I know how to do it in PostGIS or with Virtual Layer, so this is not part of the question.