Hi, Looks like https://issues.qgis.org/issues/15930
H. 2017-06-26 16:28 GMT+02:00 Bernhard Ströbl <[email protected]>: > Hi Andreas, > just a wild guess: Could it be related with the Umlaut "ä" > > Bernhard > > > Am 26.06.2017 um 16:26 schrieb Neumann, Andreas: > >> Hi, >> >> I use a relation_aggregate expression with the following syntax: >> >> relation_aggregate( relation:='Erdwärmesonden', >> aggregate:='sum',expression:="anzahl_sonden") >> >> In the output preview this works fine and I get an expected result, >> however, if I use the same expression in a virtual field, I always get >> NULL values. >> >> Any idea why this happens? >> >> Thanks, >> >> Andreas >> >> >> >> >> __________ Information from ESET Mail Security, version of virus >> signature database 15646 (20170626) __________ >> >> The message was checked by ESET Mail Security. >> http://www.eset.com >> >> >> _______________________________________________ >> Qgis-user mailing list >> [email protected] >> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user >> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user >> >> > > > __________ Information from ESET Mail Security, version of virus signature > database 15646 (20170626) __________ > > The message was checked by ESET Mail Security. > http://www.eset.com > > > _______________________________________________ > Qgis-user mailing list > [email protected] > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
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