IntegrityError: duplicate key value violates unique constraint
A tale of how I learned about PostgreSQL sequence generators the hard way.
A tale of how I learned about PostgreSQL sequence generators the hard way.
After a bit of experimentation I’ve succeeded in moving an existing Plone 3.3.5 from the normal FileStorage storage (in other words a ZODB in a Data.fs file) to RelStorage using PostgreSQL. This is a blog post about what I needed to change in the buildout configuration and which resources I used.