"Could not commit changes to layer..." and "duplicate key value violates..." errors when committing changes in postgis

[qgib]

Author Name: Giovanni Manghi (@gioman)
Original Redmine Issue: 2187

Redmine category:data_provider
Assignee: nobody -

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This ticket was open after the observations made here

http://lists.osgeo.org/pipermail/qgis-developer/2009-December/008552.html

To replicate:
use the "regions" layer you can find in the spatialite sample dataset: you can save it as shapefile and import to postgis. Tested also with other layers, like the "world borders" vector.

In qgis trunk (but not in 1.3) after merging non adjacent or non overlapping features (or features with islands) of a postgis layer, after toggling editing to save changes, the program returns

"ERROR: duplicate key value violates unique constraint "regions_pkey""

and after that

"Could not commit changes to layer regions
Errors: ERROR: 1 feature(s) not added.
SUCCESS: 2 feature(s) deleted."

If the same is done on a spatialite layer only the latter message is shown (again, only in trunk, not in 1.3).

[qgib]

Author Name: Giovanni Manghi (@gioman)

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meanwhile the problem seems to have been solved in spatialite, not yet in postgis

[qgib]

Author Name: Giovanni Manghi (@gioman)

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• resolution was changed from to fixed
• status_id was changed from Open to Closed

[qgib]

Author Name: Giovanni Manghi (@gioman)

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probably fixed by 58c68ef (SVN r12419)