This query tests if there are any rows in table ''geospatialinfo'' do not exist in any xx_ has_geospatialinfo tables. If you have a result here it should be seen as an indication that there are issues with the geodata. I do not think that having orphans in this direction creates issues so if you do not have a high number of records you do not need to do anything. This query might take long time to run e.g. South Sudan almost 2 hours.