Bug report #20207
Updated by Jürgen Fischer over 5 years ago
Issue might be related to: #19708 https://issues.qgis.org/issues/19708
Having a polygon layer in gpkg format and a point layer in *.shp format if you
- join attributes by location (polygon attribute joined to points)
- join all columns (that includes the fid column)
- save result to gpkg
Due to the fact that the result would contain 2 columns named "fid" one of them (the joined one) gets removed and the attributes misalign.
At the moment the only ways to prevent this are:
- select columns to join and exclude the fid column
- prefix the joined columns
If a user is not aware of this, this leads to data loss.
If the above mentioned workarounds are not used, QGIS should automatically rename the joined "fid" column to "fid_2" or something along those lines.
Having a polygon layer in gpkg format and a point layer in *.shp format if you
- join attributes by location (polygon attribute joined to points)
- join all columns (that includes the fid column)
- save result to gpkg
Due to the fact that the result would contain 2 columns named "fid" one of them (the joined one) gets removed and the attributes misalign.
At the moment the only ways to prevent this are:
- select columns to join and exclude the fid column
- prefix the joined columns
If a user is not aware of this, this leads to data loss.
If the above mentioned workarounds are not used, QGIS should automatically rename the joined "fid" column to "fid_2" or something along those lines.