I would consider that a bug then, but I can't remember if I ever used merge tool on PostGIS tables directly. I believe NaturalGIS has some processing tools that work in PostGIS backend, but can't remember if merge is available.
Alexandre A terça, 1/03/2022, 09:24, Andreas Neumann <a.neum...@carto.net> escreveu: > Hi Alex, > > Thank you for your reply. > > In my case, the data resides in Postgis, not in Geopackage. > > But if I understand you correctly, then Geopackage imposes it's limit on > QGIS in general, aka other providers as well - right? > > Thanks, > Andreas > > On 2022-03-01 10:16, Alexandre Neto wrote: > > I believe that comes from the geopackage fid limitations. For that reason, > I never use the fid field as an actual id. That's my workaround. > > Alexandre Neto > > A terça, 1/03/2022, 08:44, Andreas Neumann <a.neum...@carto.net> escreveu: > > Hi, > > We have a problem with the merge tool. > > We have a relatively complex data model with lots of relations. We want to > use the merge tool with this data. > > The merge tool allows to carefully choose which attributes should end up > in the merged feature. This works fine, except for the feature ID. > > QGIS stubbornly insists on having to create a new feature ID after the > merge - and is not reusing the feature ID of the original feature we > selected as the "master" feature in the merge tool. > > This is a huge problem - because after the merge we loose all relations, > because the feature ID has changed. > > Do you know any work around? Would we be able to fix this behaviour in a > future QGIS release? > > Thanks for the discussion, > > Andreas > _______________________________________________ > QGIS-Developer mailing list > QGIS-Developer@lists.osgeo.org > List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-developer > > >
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