I'm looking for the fastest way to filter and unfilter a layer in qgis 3.
My current workflow is too tedious: right click on layer / filter / write filter or delete filter
My final goal is to see at one sight the results of a filter/unfilter.
You can duplicate/copy your layer when you right-click it. Then filter one layer, and leave the other as it is. Put both layers in a group and set this group to mutually exclusive
by rightclicking it.