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I have two polygon layers and many of the features are identical (or should be identical). I want to isolate only the features that are in one layer but not the other.

I'm using QGIS 3 and I tried using the Vector>Geoprocessing>Difference tool but it left me with slivers of features because they weren't perfectly identical.

One fully drawn building along with many slivers of buildings

I used this layer with slivers by eliminating all features with an area ~0, but I'd still like to know if there's a Spatial Query I should be running.

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    Your question isn't clear, but maybe the Select by location tool will help you. – csk Apr 19 at 19:42
  • Yes, Select by location was what I needed, specifically the "removing from current selection". – jfact0ry Apr 19 at 22:58
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csk gave me the solution in a comment. I selected all features in a layer then used Select by location and removing from selection to remove the features that were matched by another layer. Repeated the task vice versa to get all the features that were unique.

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