Hi, as regular user of PostGIS I was baffled that a virtual layer containing
WHERE st_intersects(t2.geometry, t1.geometry) gave seemingly wrong results. Reading the docs: "The return type is Integer, with a return value of 1 for TRUE, 0 for FALSE, and –1 for UNKNOWN corresponding to a function invocation on NULL arguments" So UNKNOWN -> -1 -> True will join null geometries with each other geometry. There is probably not much QGIS can do about this. Changed the query in WHERE st_intersects(t2.geometry, t1.geometry) = 1 -- Kai Borgolte, Bonn _______________________________________________ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
